Tools · B2B data & intent

Companies using Apollo.io_

As of 4 November 2026, 16,220 companies show Apollo.io: 15,196 carry it on their website or in their DNS records, 1,052 name it in their own job postings, and 28 do both.

As of 4 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.

Largest market
United States · 9,178 companies
Companies with 51+ staff
1,220 · 8% of the footprint
Top industry
Technology & software · 37%
Team that names it most
Sales · 1,476 postings
Hiring on it, last 30 days
717 companies
Most often alongside
HubSpot · 740 companies
16,220companies show Apollo.io, all sources
15,196on their website or in DNS records
1,052name it in their own job postings
1,600postings naming Apollo.io, last 90 days
02 — Two ways we see a tool

Where Apollo.io shows up

Each population is counted on its own. We never add them up without saying so, because they answer different questions.

Website and DNS footprint15,196

Companies whose own pages load Apollo.io's scripts or embeds, or whose domain's mail and hosting records (SPF, DKIM, MX, CNAME) point at Apollo.io. From our crawl of 41.5M company websites and the DNS sweep behind it. Reach: the tool is in the building.

Job postings1,052

Companies whose own postings say the team works in Apollo.io. Read hourly from ~70 applicant tracking systems, with the function, a quote and a date. Intent: the team that runs it is hiring.

Both28

Companies in the footprint whose postings also name Apollo.io. The rest of the posting population (1,024) runs Apollo.io without a public trace on the site or in DNS, which is where job data earns its place.

03 — Who uses it

Companies on Apollo.io

Companies with 201+ employees and high-confidence evidence in their own postings; job boards and portals left out.

SpaceXSpace systems manufacturers · United States1001-5000 employeesSequoia Applied TechnologiesApplied AI ML development · United States201-500 employeesLoadsmartFleet & route management software · Chicago, United States501-1000 employeesHurixLearning management systems · Jersey City, United States501-1000 employeesosapiensCompliance grc software · Mannheim, Germany201-500 employeesPassionfrootAI marketing automation agencies · United States10,001+ employeesArcanysCustom software development agencies · Australia201-500 employeesAEMEnvironmental consulting · Germantown, United States201-500 employeesPenteraManaged cybersecurity services · Burlington, United States201-500 employeesAlloyCybersecurity iam software · New York, United States51-200 employeesQAAI skills training · London, United Kingdom1001-5000 employeesInOpTraApplied AI ML development · Plano, United States201-500 employeesNakisaHR management software · Downtown Montreal North, United States201-500 employeesMarqetaMerchant acquiring terminals · Oakland, United States501-1000 employeesDealHubQuoting proposal software · United States201-500 employeesEnergy AspectsMarket research providers · Canary Wharf, United Kingdom201-500 employeesITRSBusiness intelligence analytics software · United States201-500 employeesAfterShipOther B2B SaaS platforms · Robinson Road, United States201-500 employeesPerkExpense ap automation software · Wilmington, United Kingdom1001-5000 employeesIdealsDocument management automation · York, United States201-500 employees
Seen through the website or DNS only

Companies with 1,000+ employees whose website or DNS carries Apollo.io but whose postings never name it: the part of the market job data alone misses.

16,220 companies show Apollo.io; 43 of them have over 1,000 employees.

Filter by country, size, team and source, open verified e-mails for the decision makers, or push new matches to your CRM every week.

Free plan: 1,000 records, no card. The first 20 are above; e-mails are verified at the mail server when you open them.

04 — Footprint breakdown

By country, company size and industry

The 15,196 companies with Apollo.io on their website or in DNS. Click a country for its own page where we have one.

By country
companiesshare
United States
9,17860%
United Kingdom
1,58310%
Canada
6064%
Australia
3943%
Brazil
3522%
India
3022%
Germany
2642%
France
2372%
Spain
2352%
Netherlands
1581%
Italy
1211%
United Arab Emirates
1091%
By company size
companiesshare
Self-employed
6,81545%
2-10 employees
4,17827%
11-50 employees
2,87719%
51-200 employees
9086%
201-500 employees
1981%
501-1000 employees
670%
1001-5000 employees
370%
5001-10000 employees
50%
10,001+ employees
50%
By industry
companiesshare
Technology & software
5,69337%
Business & finance services
5,29835%
Consumer services & leisure
9226%
Manufacturing & industry
9026%
Property & construction
6614%
Commerce & trade
4163%
Media & content
3913%
Transport, logistics & rental
2372%
Health care
1441%
Utilities & infrastructure
1311%
Public, community & associations
1131%
Hospitality & travel
1071%
05 — What their DNS and pages also say

The mail, hosting and web stack of Apollo.io companies

Other tools found on the same companies' websites or in their DNS records. Mail providers and senders come from SPF, DKIM and MX; the rest from page code.

Google Workspace9,356 companies · 62%
Microsoft 3655,825 companies · 38%
Cloudflare4,128 companies · 27%
microsoft_teams2,300 companies · 15%
SendGrid2,037 companies · 13%HubSpot2,033 companies · 13%
microsoft_intune1,880 companies · 12%
Microsoft Entra ID1,878 companies · 12%
Resend1,867 companies · 12%Mailchimp1,609 companies · 11%Vercel1,304 companies · 9%Brevo1,092 companies · 7%
facebook_pixel1,074 companies · 7%
google_cloud_dns_google_domains972 companies · 6%
Anthropic947 companies · 6%
AWS Route 53916 companies · 6%
06 — Job-posting evidence

Who runs Apollo.io inside the company

The 1,052 companies whose postings name Apollo.io: by country, size and the function of the role. The second number in the function table is companies.

Postings by function
postings · companies
Sales
1,476 · 882
Business development & strategy
168 · 127
Marketing & communications
167 · 137
Software engineering
79 · 51
Data & AI
36 · 25
IT operations & business systems
22 · 17
Human resources
19 · 13
Unclassified
17 · 7
Customer service & success
15 · 12
Product, program & project management
12 · 11
Posting companies by country
companiesshare
United States
68165%
United Kingdom
777%
India
535%
Germany
434%
Brazil
242%
Canada
192%
Australia
172%
Spain
121%
Poland
101%
France
91%
Singapore
81%
Netherlands
71%
Posting companies by size
companiesshare
Self-employed
515%
2-10 employees
22221%
11-50 employees
26325%
51-200 employees
25324%
201-500 employees
12912%
501-1000 employees
495%
1001-5000 employees
616%
5001-10000 employees
101%
10,001+ employees
141%
Hiring on it right now
postings
Postings, last 30 days
1,141
Postings, last 90 days
1,600
All open postings
2,246

717 companies opened a role that names Apollo.io in the last 30 days. A hiring team that names its tools is the moment to write to the person who owns the stack.

07 — Named alongside

What Apollo.io teams also ask for

Tools named in the same postings as Apollo.io. Office software is left out.

08 — B2B data & intent

Apollo.io against the rest of its category

Ranked by companies naming each tool in postings. Whole category →

Cite this

Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.

16,220 companies show Apollo.io: 15,196 carry it on their website or in their DNS records, 1,052 name it in their own job postings, and 28 do both. (Breaknorm, 4 November 2026, https://breaknorm.co/tools/apollo-io)
How we know

Read from the source, not self-reported

Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →

  • Website codeScripts, tags and embeds found on the company's own pages in our crawl of 41.5M sites. A tool counts once per company.
  • DNS recordsSPF includes, DKIM selectors, MX and CNAME records of the company's domain that point at Apollo.io or another vendor. Swept in cycles; dedicated mail-provider and hosting facets open once coverage passes 80% per country.
  • Job postingsRead hourly from the applicant tracking systems behind company career sites. A tool counts when the employer's own text names it as the team's system; candidate wish-lists and apply boilerplate are excluded. Confidence low, medium or high per company.
  • Sending infrastructureCold-e-mail sending domains are look-alike domains on a provider's infrastructure (DNS records, certificate logs) that redirect to the company. Absence is not evidence: only companies with a found sending domain are counted.
  • CompaniesCountry, size and industry come from the company profile we build from its website; headcount from LinkedIn where known, otherwise estimated. Job boards, portals and aggregators are kept out of lists.
FAQ

Apollo.io data: questions

How many companies use Apollo.io?

16,220 as of 4 November 2026: 15,196 carry Apollo.io on their website or in their DNS records and 1,052 name it in their own job postings; 28 show up in both. We keep the two counts apart because they measure different things.

What does "website or DNS" mean?

Our crawler finds Apollo.io's scripts, embeds and tags on the company's own pages, and our DNS sweep reads the domain's mail and hosting records (SPF includes, DKIM selectors, MX, CNAMEs) that point at Apollo.io. Either one puts the company in the footprint. The sweep is still running, so this number grows week by week.

Why is the job-posting number so much smaller?

A posting only names a tool when the team that will use it is hiring and chooses to say so. That makes it a smaller but stronger signal: it tells you which team runs Apollo.io, with a quote and a date. The footprint tells you reach.

How fresh is this?

Career sites are read hourly, websites are re-crawled on a rolling schedule and DNS is re-swept in cycles. The date at the top is when these counts were computed.

Can I get the list?

Yes. The first 20 are on this page; the full 16,220 with verified e-mails and a weekly feed of new Apollo.io users is in the product. Counting is free.

Companies and people

Get this list your way

The same data as a search, over MCP and the API, as bulk files, or pushed to you as it changes.

Every company on Apollo.io,
with the person who owns it

Connect the MCP server or the API, filter on Apollo.io, and get 1,000 records free.

  1. 01Sign up, no card
  2. 02Connect Claude, ChatGPT or an API key
  3. 03Ask for your market, 1,000 records free