Company lists · Data refreshed September 2026
Top 25 Iso audit companies based in the United States
RevenueBase identified 421 company matches for iso audit companies associated with the United States as of September 2026 and tracks 17,512 professional contacts across them, including 6,242 with verified work emails. Houston is the largest hub.
This list covers company matches for iso audit companies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest iso audit companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 12,316 contacts → | ||||
Exact match “A global leader in applied safety science, UL Solutions (NYSE: ULS) transforms safety, security and sustainability challenges into opportunities for customers in more than 110…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 2 | 712 contacts → | ||||
Exact match “TÜV Rheinland is a world leader in testing, inspection and certification services for a wide variety of industries.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 3 | 211 contacts → | ||||
Exact match “Pro QC International provides tailored quality solutions with a human touch in 100 countries.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 199 contacts → | ||||
Exact match “The ANSI National Accreditation Board plays an important role in ensuring the safety and quality of goods and services and in protecting the environment.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 5 | 174 contacts → | ||||
Exact match “Insight Assurance is a security and compliance firm trusted by more than 1,500 organizations for their SOC 1, SOC 2, SOC 3, PCI DSS, ISO 27001, ISO 27017/27018, ISO 27701, ISO…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 120 contacts → | ||||
Exact match “RoyalCert is one of the fastest-growing certification bodies, with an international presence in more than 30 countries that is constantly expanding.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 7 | 85 contacts → | ||||
Exact match “INTERCERT is a multinational auditing company headquartered in Texas, United States operating at 28+ countries.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 8 | 80 contacts → | ||||
Exact match “Since 1994, EAGLE has built an excellent reputation by providing third party auditing services that are objective and value-added.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 9 | 78 contacts → | ||||
Exact match “At PRI Certification℠, we're committed to protecting what matters by delivering industry-leading certification services across Quality, Data Security, Environmental, and Health &…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 78 contacts → | ||||
Exact match “ALS is a leading testing, inspection, certification and verification company servicing multiple industries globally.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 77 contacts → | ||||
Exact match “Ardur Technology an ISO 27001:2022 Certified organization is registered as a business unit in Las Vegas, USA.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 71 contacts → | ||||
Exact match “Plexus International is a global leader in providing training, assessment, and consulting services for organizations to attain quality management systems excellence.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 61 contacts → | ||||
Exact match “IQC, The ISO Standard Professionals.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 14 | 57 contacts → | ||||
Exact match “Core Business Solutions specializes in the needs of small businesses seeking ISO 9001 certification.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 15 | 56 contacts → | ||||
Exact match “Overview: Headquartered in Santa Maria, CA, Primus Auditing Ops provides the fresh produce industry with specialized services related to the safe production and handling of…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 16 | 49 contacts → | ||||
Exact match “Quality Team 1 is an international ISO 9001-2008 registered service company specializing in inspection and containment with locations in the United States, Canada, and Mexico.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 17 | 48 contacts → | ||||
Exact match “Alliance Infinite has consistently maintained its position among the world’s very best quality service providers for Third Party Inspection, Testing, Calibration and Management…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 18 | 46 contacts → | ||||
Exact match “Johanson Group has provided Security & Compliance Audit Services to public and private companies in a variety of industries across the world.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 19 | 46 contacts → | ||||
Exact match “The Axeon Difference Axeon Corporation is a customer-focused, practical and approachable, technically sound training and consulting firm.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 20 | 45 contacts → | ||||
Exact match “Since 1996, Bay Area Compliance Laboratories Corp.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 21 | 44 contacts → | ||||
Exact match “The International Auditing and Assurance Standards Board (IAASB) is an independent standard-setting body that serves the public interest by setting high-quality international…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 22 | 43 contacts → | ||||
Exact match “Quality Auditing LLC is the industry leader in Quality Management System Auditing & Consulting for clients in highly-regulated industries, including Medical Device…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 23 | 41 contacts → | ||||
Exact match “ABS Quality Evaluations, Inc.(ABS QE) is a global leader in quality assurance and business improvement services with over 30 years of experience.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 24 | 40 contacts → | ||||
Exact match “Drummond is a leading and trusted compliance, conformance, and standards certification, testing, and validation services provider.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 25 | 31 contacts → | ||||
Exact match “Linford & Company LLP is a Denver-based Certified Public Accounting firm comprised of former “Big Four” auditors and Information Security experts.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “iso audit companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 421 iso audit companies based in the United States
See the full list, filter by size, metro and specialty, and access 6,242 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Iso audit companies based in the United States at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 421 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “iso audit companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 6,242 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “iso audit companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many iso audit companies are there based in the United States?
RevenueBase identified 421 company matches for iso audit companies associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
UL Solutions tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most iso audit companies?
Houston leads with 27 company records, followed by Miami (9) and New York (9).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 6,242 professional contacts with verified work emails tracked across these 421 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 421 iso audit companies based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Iso audit companies by geography
- Iso audit companies based in Bangalore, India
- Iso audit companies based in Mumbai, India
- Iso audit companies based in Argentina
- Iso audit companies based in Australia
- Iso audit companies based in Belgium
- Iso audit companies based in Brazil
- Iso audit companies based in Canada
- Iso audit companies based in Chile
- Iso audit companies based in Colombia
- Iso audit companies based in Czechia
- Iso audit companies based in Denmark
- Iso audit companies based in France
Browse the directory
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
Company intelligence · public preview
Top 25 iso audit companies based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 421 matching company records for iso audit companies based in the United States, with 17,512 tracked contacts and 6,242 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 iso audit companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  UL Solutionsul.comHQ: Northbrook, IL, United StatesReported employees: 10001+ | Northbrook, IL, United States | 10001+ | Exact match | 12,316 contacts → |
“A global leader in applied safety science, UL Solutions (NYSE: ULS) transforms safety, security and sustainability challenges into opportunities for customers in more than 110…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  TÜV Rheinland North Americatuv.comHQ: Boxborough, MA, United StatesReported employees: 501-1,000 | Boxborough, MA, United States | 501-1,000 | Exact match | 712 contacts → |
“TÜV Rheinland is a world leader in testing, inspection and certification services for a wide variety of industries.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  PRO QC Internationalproqc.comHQ: Mchenry, IL, United StatesReported employees: 501-1,000 | Mchenry, IL, United States | 501-1,000 | Exact match | 211 contacts → |
“Pro QC International provides tailored quality solutions with a human touch in 100 countries.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  ANABanab.orgHQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 199 contacts → |
“The ANSI National Accreditation Board plays an important role in ensuring the safety and quality of goods and services and in protecting the environment.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Insight Assuranceinsightassurance.comHQ: Tampa, FL, United StatesReported employees: 201-500 | Tampa, FL, United States | 201-500 | Exact match | 174 contacts → |
“Insight Assurance is a security and compliance firm trusted by more than 1,500 organizations for their SOC 1, SOC 2, SOC 3, PCI DSS, ISO 27001, ISO 27017/27018, ISO 27701, ISO…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Royalcert International Registrarsroyalcert.com HQ: Watertown, MA, United StatesReported employees: 501-1,000 | Watertown, MA, United States | 501-1,000 | Exact match | 120 contacts → |
“RoyalCert is one of the fastest-growing certification bodies, with an international presence in more than 30 countries that is constantly expanding.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Intercert INCintercert.comHQ: The Woodlands, TX, United StatesReported employees: 51-200 | The Woodlands, TX, United States | 51-200 | Exact match | 85 contacts → |
“INTERCERT is a multinational auditing company headquartered in Texas, United States operating at 28+ countries.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Eagle Certification Groupeaglecertificationgroup.comHQ: Dayton, OH, United StatesReported employees: 11-50 | Dayton, OH, United States | 11-50 | Exact match | 80 contacts → |
“Since 1994, EAGLE has built an excellent reputation by providing third party auditing services that are objective and value-added.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  PRI Certificationp-r-i.orgHQ: Warrendale, PA, United StatesReported employees: 11-50 | Warrendale, PA, United States | 11-50 | Exact match | 78 contacts → |
“At PRI Certification℠, we're committed to protecting what matters by delivering industry-leading certification services across Quality, Data Security, Environmental, and Health &…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  ALS Life Sciencesalsglobal.comHQ: Houston, TX, United StatesReported employees: Not recorded | Houston, TX, United States | Not recorded | Exact match | 78 contacts → |
“ALS is a leading testing, inspection, certification and verification company servicing multiple industries globally.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Ardur Technology LLCardurtechnology.com HQ: Las Vegas, NV, United StatesReported employees: 201-500 | Las Vegas, NV, United States | 201-500 | Exact match | 77 contacts → |
“Ardur Technology an ISO 27001:2022 Certified organization is registered as a business unit in Las Vegas, USA.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Plexus Internationalplexusintl.comHQ: Minneapolis, MN, United StatesReported employees: 51-200 | Minneapolis, MN, United States | 51-200 | Exact match | 71 contacts → |
“Plexus International is a global leader in providing training, assessment, and consulting services for organizations to attain quality management systems excellence.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  IQC4iqc.comHQ: Dayton, United StatesReported employees: 11-50 | Dayton, United States | 11-50 | Exact match | 61 contacts → |
“IQC, The ISO Standard Professionals.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Core Business Solutionsthecoresolution.com HQ: Lewisburg, PA, United StatesReported employees: 11-50 | Lewisburg, PA, United States | 11-50 | Exact match | 57 contacts → |
“Core Business Solutions specializes in the needs of small businesses seeking ISO 9001 certification.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Primus Auditing OPSprimusauditingops.comHQ: Santa Maria, CA, United StatesReported employees: 51-200 | Santa Maria, CA, United States | 51-200 | Exact match | 56 contacts → |
“Overview: Headquartered in Santa Maria, CA, Primus Auditing Ops provides the fresh produce industry with specialized services related to the safe production and handling of…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Quality Team 1qteam1.com HQ: Highland Park, MI, United StatesReported employees: 201-500 | Highland Park, MI, United States | 201-500 | Exact match | 49 contacts → |
“Quality Team 1 is an international ISO 9001-2008 registered service company specializing in inspection and containment with locations in the United States, Canada, and Mexico.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Alliance Infiniteallianceinfinite.comHQ: New York, United StatesReported employees: 1,001-5,000 | New York, United States | 1,001-5,000 | Exact match | 48 contacts → |
“Alliance Infinite has consistently maintained its position among the world’s very best quality service providers for Third Party Inspection, Testing, Calibration and Management…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Johanson Group LLPjohansonllp.comHQ: Colorado Springs, CO, United StatesReported employees: 51-200 | Colorado Springs, CO, United States | 51-200 | Exact match | 46 contacts → |
“Johanson Group has provided Security & Compliance Audit Services to public and private companies in a variety of industries across the world.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Axeon Corporationaxeon.netHQ: Draper, UT, United StatesReported employees: 11-50 | Draper, UT, United States | 11-50 | Exact match | 46 contacts → |
“The Axeon Difference Axeon Corporation is a customer-focused, practical and approachable, technically sound training and consulting firm.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | BAY Area Compliance Laboratories, Corpbaclcorp.com HQ: Sunnyvale, CA, United StatesReported employees: 11-50 | Sunnyvale, CA, United States | 11-50 | Exact match | 45 contacts → |
“Since 1996, Bay Area Compliance Laboratories Corp.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | HQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 44 contacts → |
“The International Auditing and Assurance Standards Board (IAASB) is an independent standard-setting body that serves the public interest by setting high-quality international…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Quality Auditing LLCqualityauditing.comHQ: Minneapolis, MN, United StatesReported employees: 11-50 | Minneapolis, MN, United States | 11-50 | Exact match | 43 contacts → |
“Quality Auditing LLC is the industry leader in Quality Management System Auditing & Consulting for clients in highly-regulated industries, including Medical Device…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  ABS Quality Evaluationsabs-qe.comHQ: Spring, TX, United StatesReported employees: Not recorded | Spring, TX, United States | Not recorded | Exact match | 41 contacts → |
“ABS Quality Evaluations, Inc.(ABS QE) is a global leader in quality assurance and business improvement services with over 30 years of experience.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Drummond Group, LLCdrummondgroup.com HQ: Durham, NC, United StatesReported employees: 11-50 | Durham, NC, United States | 11-50 | Exact match | 40 contacts → |
“Drummond is a leading and trusted compliance, conformance, and standards certification, testing, and validation services provider.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Linford & Company LLPlinfordco.comHQ: Denver, CO, United StatesReported employees: 11-50 | Denver, CO, United States | 11-50 | Exact match | 31 contacts → |
“Linford & Company LLP is a Denver-based Certified Public Accounting firm comprised of former “Big Four” auditors and Information Security experts.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 421 company matches
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Iso audit companies: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
421 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 421 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for iso audit companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many iso audit companies did RevenueBase find based in the United States?
The saved snapshot records 421 matching company records, 17,512 tracked contacts and 6,242 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Iso audit companies by geography
- Iso audit companies based in Bangalore, India
- Iso audit companies based in Mumbai, India
- Iso audit companies based in Argentina
- Iso audit companies based in Australia
- Iso audit companies based in Belgium
- Iso audit companies based in Brazil
- Iso audit companies based in Canada
- Iso audit companies based in Chile
- Iso audit companies based in Colombia
- Iso audit companies based in Czechia
- Iso audit companies based in Denmark
- Iso audit companies based in France
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 iso audit companies based in the United States. Snapshot: September 20, 2026. https://revenuebase.ai/companies/iso-audit-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 iso audit companies based in the United States
RevenueBase records 421 matching company records for iso audit companies based in the United States, with 17,512 tracked contacts and 6,242 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 iso audit companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | UL Solutionsul.com HQ: Northbrook, IL, United StatesReported employees: 10001+ | Northbrook, IL, United States | 10001+ | Exact match | 12,316 contacts → |
“A global leader in applied safety science, UL Solutions (NYSE: ULS) transforms safety, security and sustainability challenges into opportunities for customers in more than 110…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | TÜV Rheinland North Americatuv.com HQ: Boxborough, MA, United StatesReported employees: 501-1,000 | Boxborough, MA, United States | 501-1,000 | Exact match | 712 contacts → |
“TÜV Rheinland is a world leader in testing, inspection and certification services for a wide variety of industries.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | PRO QC Internationalproqc.com HQ: Mchenry, IL, United StatesReported employees: 501-1,000 | Mchenry, IL, United States | 501-1,000 | Exact match | 211 contacts → |
“Pro QC International provides tailored quality solutions with a human touch in 100 countries.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | ANABanab.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 199 contacts → |
“The ANSI National Accreditation Board plays an important role in ensuring the safety and quality of goods and services and in protecting the environment.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Insight Assuranceinsightassurance.com HQ: Tampa, FL, United StatesReported employees: 201-500 | Tampa, FL, United States | 201-500 | Exact match | 174 contacts → |
“Insight Assurance is a security and compliance firm trusted by more than 1,500 organizations for their SOC 1, SOC 2, SOC 3, PCI DSS, ISO 27001, ISO 27017/27018, ISO 27701, ISO…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Royalcert International Registrarsroyalcert.com HQ: Watertown, MA, United StatesReported employees: 501-1,000 | Watertown, MA, United States | 501-1,000 | Exact match | 120 contacts → |
“RoyalCert is one of the fastest-growing certification bodies, with an international presence in more than 30 countries that is constantly expanding.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Intercert INCintercert.com HQ: The Woodlands, TX, United StatesReported employees: 51-200 | The Woodlands, TX, United States | 51-200 | Exact match | 85 contacts → |
“INTERCERT is a multinational auditing company headquartered in Texas, United States operating at 28+ countries.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Eagle Certification Groupeaglecertificationgroup.com HQ: Dayton, OH, United StatesReported employees: 11-50 | Dayton, OH, United States | 11-50 | Exact match | 80 contacts → |
“Since 1994, EAGLE has built an excellent reputation by providing third party auditing services that are objective and value-added.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | PRI Certificationp-r-i.org HQ: Warrendale, PA, United StatesReported employees: 11-50 | Warrendale, PA, United States | 11-50 | Exact match | 78 contacts → |
“At PRI Certification℠, we're committed to protecting what matters by delivering industry-leading certification services across Quality, Data Security, Environmental, and Health &…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | ALS Life Sciencesalsglobal.com HQ: Houston, TX, United StatesReported employees: Not recorded | Houston, TX, United States | Not recorded | Exact match | 78 contacts → |
“ALS is a leading testing, inspection, certification and verification company servicing multiple industries globally.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Ardur Technology LLCardurtechnology.com HQ: Las Vegas, NV, United StatesReported employees: 201-500 | Las Vegas, NV, United States | 201-500 | Exact match | 77 contacts → |
“Ardur Technology an ISO 27001:2022 Certified organization is registered as a business unit in Las Vegas, USA.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Plexus Internationalplexusintl.com HQ: Minneapolis, MN, United StatesReported employees: 51-200 | Minneapolis, MN, United States | 51-200 | Exact match | 71 contacts → |
“Plexus International is a global leader in providing training, assessment, and consulting services for organizations to attain quality management systems excellence.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | IQC4iqc.com HQ: Dayton, United StatesReported employees: 11-50 | Dayton, United States | 11-50 | Exact match | 61 contacts → |
“IQC, The ISO Standard Professionals.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Core Business Solutionsthecoresolution.com HQ: Lewisburg, PA, United StatesReported employees: 11-50 | Lewisburg, PA, United States | 11-50 | Exact match | 57 contacts → |
“Core Business Solutions specializes in the needs of small businesses seeking ISO 9001 certification.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Primus Auditing OPSprimusauditingops.com HQ: Santa Maria, CA, United StatesReported employees: 51-200 | Santa Maria, CA, United States | 51-200 | Exact match | 56 contacts → |
“Overview: Headquartered in Santa Maria, CA, Primus Auditing Ops provides the fresh produce industry with specialized services related to the safe production and handling of…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Quality Team 1qteam1.com HQ: Highland Park, MI, United StatesReported employees: 201-500 | Highland Park, MI, United States | 201-500 | Exact match | 49 contacts → |
“Quality Team 1 is an international ISO 9001-2008 registered service company specializing in inspection and containment with locations in the United States, Canada, and Mexico.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Alliance Infiniteallianceinfinite.com HQ: New York, United StatesReported employees: 1,001-5,000 | New York, United States | 1,001-5,000 | Exact match | 48 contacts → |
“Alliance Infinite has consistently maintained its position among the world’s very best quality service providers for Third Party Inspection, Testing, Calibration and Management…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Johanson Group LLPjohansonllp.com HQ: Colorado Springs, CO, United StatesReported employees: 51-200 | Colorado Springs, CO, United States | 51-200 | Exact match | 46 contacts → |
“Johanson Group has provided Security & Compliance Audit Services to public and private companies in a variety of industries across the world.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Axeon Corporationaxeon.net HQ: Draper, UT, United StatesReported employees: 11-50 | Draper, UT, United States | 11-50 | Exact match | 46 contacts → |
“The Axeon Difference Axeon Corporation is a customer-focused, practical and approachable, technically sound training and consulting firm.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | BAY Area Compliance Laboratories, Corpbaclcorp.com HQ: Sunnyvale, CA, United StatesReported employees: 11-50 | Sunnyvale, CA, United States | 11-50 | Exact match | 45 contacts → |
“Since 1996, Bay Area Compliance Laboratories Corp.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | HQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 44 contacts → |
“The International Auditing and Assurance Standards Board (IAASB) is an independent standard-setting body that serves the public interest by setting high-quality international…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Quality Auditing LLCqualityauditing.com HQ: Minneapolis, MN, United StatesReported employees: 11-50 | Minneapolis, MN, United States | 11-50 | Exact match | 43 contacts → |
“Quality Auditing LLC is the industry leader in Quality Management System Auditing & Consulting for clients in highly-regulated industries, including Medical Device…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | ABS Quality Evaluationsabs-qe.com HQ: Spring, TX, United StatesReported employees: Not recorded | Spring, TX, United States | Not recorded | Exact match | 41 contacts → |
“ABS Quality Evaluations, Inc.(ABS QE) is a global leader in quality assurance and business improvement services with over 30 years of experience.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Drummond Group, LLCdrummondgroup.com HQ: Durham, NC, United StatesReported employees: 11-50 | Durham, NC, United States | 11-50 | Exact match | 40 contacts → |
“Drummond is a leading and trusted compliance, conformance, and standards certification, testing, and validation services provider.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Linford & Company LLPlinfordco.com HQ: Denver, CO, United StatesReported employees: 11-50 | Denver, CO, United States | 11-50 | Exact match | 31 contacts → |
“Linford & Company LLP is a Denver-based Certified Public Accounting firm comprised of former “Big Four” auditors and Information Security experts.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 421 company matches
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Iso audit companies: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
421 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 421 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for iso audit companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many iso audit companies did RevenueBase find based in the United States?
The saved snapshot records 421 matching company records, 17,512 tracked contacts and 6,242 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 iso audit companies based in the United States. Snapshot: September 20, 2026. https://revenuebase.ai/companies/iso-audit-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗