Company lists · Data refreshed September 2026
Top 25 I9 verification services worldwide
RevenueBase identified 278 i9 verification services worldwide as of September 2026 and tracks 8,638 professional contacts across them, including 2,924 with verified work emails. The United States is the largest market and Noida the largest hub.
This list covers i9 verification services worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026. Country and city lists for i9 verification services follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 i9 verification services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,619 contacts → | ||||
Indirect evidence “In a category of inflexible giants and ill-equipped startups, Accurate Background stands alone.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,332 contacts → | ||||
Partial evidence “DataFlow Group is a pioneering global provider of specialized Primary Source Verification (PSV) solutions, and background screening and immigration compliance services that assist…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 774 contacts → | ||||
Indirect evidence “At Equifax we believe knowledge drives progress.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 667 contacts → | ||||
Indirect evidence “cFIRST is a digital global background screening service provider headquartered in Cincinnati, Ohio.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 477 contacts → | ||||
Partial evidence “Empowering Confident Hiring Decisions for 15+ Years Verifacts is India’s trusted background verification partner-delivering accurate, customizable checks across employees…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 408 contacts → | ||||
Indirect evidence “Sterling was acquired by First Advantage on October 31st, 2024.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 185 contacts → | ||||
Indirect evidence “At Verified First, we believe great companies start with great people.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 180 contacts → | ||||
Indirect evidence “Parishram Resources Pvt Ltd is a leading Human Resource service provider with its headquarters in Gurgaon, India.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 147 contacts → | ||||
Indirect evidence “We've moved!” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 137 contacts → | ||||
Indirect evidence “Vault Workforce Screening was acquired by Sterling on January 2, 2024.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 100 contacts → | ||||
Indirect evidence “At Verifile, we’re committed to helping ensure that every one of your employees is everything they claim to be.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 81 contacts → | ||||
Indirect evidence “Crystal Screening Services – Secure Your Workforce with Confidence In today’s fast-moving business environment, hiring the right people isn’t just important-it’s critical.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 68 contacts → | ||||
Partial evidence “A leading provider of background check and primary source verification services.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 67 contacts → | ||||
Indirect evidence “WorkBright simplifies I-9 compliance with an audit-ready platform built for accuracy, speed, and ease of use-paired with expert-led services for ongoing compliance.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 67 contacts → | ||||
Partial evidence “VeriFacts is a leader in employment verification for the financial industry.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 67 contacts → | ||||
Partial evidence “Welcome to Vibrant Screen - Count on us for all your background verification needs.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 55 contacts → | ||||
Partial evidence “Integritas Global Services is a leading Background Verification Company, established in 2017 amidst the burgeoning momentum of the APAC Background Verification market.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 49 contacts → | ||||
Partial evidence “We’re TrustID, the UK’s market leader in Right to Work verification and a certified Digital Verification Service (DVS) provider.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 45 contacts → | ||||
Indirect evidence “Founded in 2008, SecureSearch has been helping businesses effectively manage their screening programs for over a decade and has since established itself as the trusted…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 42 contacts → | ||||
Partial evidence “We are pleased to welcome you to our firm, Verification Street, a dynamic firm that has grown steadily over the past years.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 41 contacts → | ||||
Partial evidence “Clobminds - The Ultimate Background Verification Partner Are you looking for a reliable and trustworthy partner to conduct thorough background checks for your potential hires?” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 39 contacts → | ||||
Partial evidence “CheckMinistry brings over 20 years of collective team industry experience, delivering comprehensive, technology-driven background screening and employee verification solutions.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 39 contacts → | ||||
Indirect evidence “Fraude, conflit d'intérêts, perte d'agrément, atteinte à la réputation : les risques liés à vos (futurs) collaborateurs sont réels, coûteux, et souvent sous-estimés.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 36 contacts → | ||||
Indirect evidence “In an era where data is abundant but authenticity is a rare commodity, Pietos stands as the definitive guardian of your organization’s human capital.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 35 contacts → | ||||
Indirect evidence “Edge Information Management, Inc, founded in 1991, is a national provider of numerous employment screening solutions including; criminal background checks, drug screening…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: i9 verification services. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names i9 verification services.
- Partial evidence
- Its own public description names part of i9 verification services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name i9 verification services. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 278 i9 verification services worldwide
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I9 verification services worldwide at a glance
As of Sep 20, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among i9 verification services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for i9 verification services are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “i9 verification services”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names i9 verification services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among i9 verification services, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 2,924 across the full list. 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.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
I9 verification services by location
2 lists · largest firstEvery I9 verification services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names i9 verification services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many i9 verification services are there worldwide?
RevenueBase identified 278 i9 verification services worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Accurate Background, headquartered in Irvine, tops this list with the largest team on record.
Which country has the most i9 verification services?
The United States leads with 105 companies, followed by India (78). Every i9 verification services list by country and city is linked on this page.
Which city has the most i9 verification services?
Noida leads with 10 headquartered companies, followed by Bengaluru (8) and Mumbai (7).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,924 verified decision-maker contacts tracked across these 278 companies.
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.
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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 Smart Search, 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.