Company lists · Data refreshed November 2026

Top 25 Iso 27001 certification firms worldwide

RevenueBase identified 2,693 company matches for iso 27001 certification firms worldwide as of November 2026 and tracks 23,445 professional contacts across them, including 5,320 with verified work emails. India is the largest market and London the largest hub.

This list covers company matches for iso 27001 certification firms worldwide, 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 November 6, 2026. Country and city lists for iso 27001 certification firms follow the table.

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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
2,693Companies
23,445Contacts tracked
5,320Verified emails
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The 25 largest iso 27001 certification firms worldwide

Ranked by team size
Top 25 of 2,693 company matches for iso 27001 certification firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchFrankfurt, GermanyHQ recorded Nov 6, 20261,001-5,0001,466 contacts →

Exact match

“DQS – Leveraging Quality, Driving Success.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchTampa, FL, United StatesHQ recorded Nov 6, 2026501-1,000896 contacts →

Exact match

“A-LIGN is the leading provider of high-quality, efficient cybersecurity compliance programs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchNavi Mumbai, IndiaHQ recorded Nov 6, 2026201-500423 contacts →

Exact match

“qSEAp is a CERT-IN empanelled, ISO 27001, SOC-2 Type2 and ISO 9001 certified Infosec organization founded in 2011 with a mission to deliver quality products, superior solutions…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchMontreal, QC, CanadaHQ recorded Nov 6, 202651-200406 contacts →

Exact match

“PECB is a global leader in certification, committed to fostering digital trust through education, certification, and certificate programs across various disciplines.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Nov 6, 2026n/a222 contacts →

Exact match

“IT support for businesses in London.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchBangalore, IndiaHQ recorded Nov 6, 2026n/a215 contacts →

Exact match

“Dear Sir/Madam, This is Mahendra, I would first like to take this opportunity to introduce my company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchCork - London - New York City - Bucharest - Krakow - Belfast, IrelandHQ recorded Nov 6, 202651-200206 contacts →

Exact match

“At Smarttech247 we help global companies defend against cyber crime and protect their operations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchTampa, United StatesHQ recorded Nov 6, 2026201-500201 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 · Nov 6, 2026 · View company records in RevenueBase
9Exact matchChantilly, United StatesHQ recorded Nov 6, 20261,001-5,000194 contacts →

Exact match

“Trusted By 2,880+ World-Class Brands And Organizations Of All Sizes…!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchNavi Mumbai, IndiaHQ recorded Nov 6, 202651-200190 contacts →

Exact match

“QRC Assurance and Solutions has been a forerunner on the cybersecurity front, empanelled with CERT-in, certified to provide PCI DSS QSA, PA QSA, PCI 3DS, PCI SSF, ISO 27001, ISO…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchGuadalajara, MexicoHQ recorded Nov 6, 202651-200190 contacts →

Exact match

“Somos una firma con reconocimiento internacional que ofrece servicios de certificación, capacitación y evaluación de la conformidad en diferentes estándares nacionales e…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchWest Malling, United KingdomHQ recorded Nov 6, 2026201-500158 contacts →

Exact match

“Amtivo Group provides expert certification services for ISO standards, as well as training and related services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchComuna 15, ArgentinaHQ recorded Nov 6, 202651-200146 contacts →

Exact match

“It is led by a group of information security specialists with extensive experience in large local and international companies, whose professional development has begun in one of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchManchester, United KingdomHQ recorded Nov 6, 202651-200141 contacts →

Exact match

“Our reputation for providing outstanding service explains why clients who joined us when we first opened our doors in 1993 are still with us today.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchNeu-isenburg, GermanyHQ recorded Nov 6, 202651-200134 contacts →

Exact match

“Die usd AG schützt Unternehmen vor Hackern und Kriminellen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchParis, FranceHQ recorded Nov 6, 202651-200129 contacts →

Exact match

“Our services : Penetration tests and Security Audits, Gap Analysis and PCI DSS Certification, CERT-XMCO (vulnerability watch, Cyber Survellance/Threat Intelligence, Forensics).”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchNorwich, United KingdomHQ recorded Nov 6, 202651-200120 contacts →

Exact match

“We believe in keeping ISO certification simple, so that's exactly what we do.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBogotá, ColombiaHQ recorded Nov 6, 202651-200119 contacts →

Exact match

“B-SECURE provides information security services and technologies that enable organizations to improve their security posture, minimize risk levels and simplify compliance of laws…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchChennai, IndiaHQ recorded Nov 6, 202651-200119 contacts →

Exact match

“FutureCalls is a a system integration company providing IT infrastructure and Information Security services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchUpper Colwall, United KingdomHQ recorded Nov 6, 202651-200114 contacts →

Exact match

“IASME is a cyber security certification company based in the Malvern Hills, with an office in Belfast and one in Dalgety Bay, near Edinburgh.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchNaucalpan, MexicoHQ recorded Nov 6, 202651-200110 contacts →

Exact match

“MAPS Disruptivo specializes in providing advanced Cybersecurity solutions, offering products and services from the world’s leading brands in each area.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchThe Woodlands, TX, United StatesHQ recorded Nov 6, 202651-200102 contacts →

Exact match

“INTERCERT is a multinational auditing company headquartered in Texas, United States operating at 28+ countries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchNoida, IndiaHQ recorded Nov 6, 202651-20099 contacts →

Exact match

“SDIL - ISO: 9001:2015 Certified company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchRiyadh, Saudi ArabiaHQ recorded Nov 6, 202651-20096 contacts →

Exact match

“IT Security Training & Solutions - I(TS)² | It's all about TRUST Headquartered in Riyadh, Saudi Arabia, I(TS)² is the Middle East’s premier provider of integrated information…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchPaderborn, GermanyHQ recorded Nov 6, 202651-20091 contacts →

Exact match

“neam IT-Services GmbH – founded in 1996 – is a Systems Integrator based in Paderborn, Germany and operating in various projects all over Europe.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 2,693 iso 27001 certification firms worldwide

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Iso 27001 certification firms worldwide at a glance

As of Nov 6, 2026
22.7%Verified-email coverage
8.7Average contacts per company
1-10Median size (employees)
2.2%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
1,635
11-50
787
51-200
183
201-500
47
501-1,000
11
1,001-5,000
6
5,001-10,000
3
10001+
3

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for iso 27001 certification firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “iso 27001 certification firms” 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. 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 5,320 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 November 6, 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.

Iso 27001 certification firms by location

16 lists · largest first

Every Iso 27001 certification firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 27001 certification firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many iso 27001 certification firms are there worldwide?

RevenueBase identified 2,693 company matches for iso 27001 certification firms worldwide as of November 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?

DQS tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most iso 27001 certification firms?

India leads with 297 companies, followed by the United Kingdom (252) and Germany (150). Every iso 27001 certification firms list by country and city is linked on this page.

Which city has the most iso 27001 certification firms?

London leads with 58 company records, followed by New Delhi (28) and Bangalore (26).

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 5,320 professional contacts with verified work emails tracked across these 2,693 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 November 6, 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 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.