Tools ·

Companies using open xchange_

As of 4 November 2026, 47,819 companies carry open xchange on their website or in their DNS records; none names it in job postings yet.

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

Largest market
United States · 35,551 companies
Companies with 51+ staff
1,521 · 3% of the footprint
Top industry
Business & finance services · 16%
Team that names it most
–
Hiring on it, last 30 days
0 companies
Most often alongside
–
47,819companies show open xchange, all sources
47,819on their website or in DNS records
0name it in their own job postings
0postings naming open xchange, last 90 days
02 — Two ways we see a tool

Where open xchange 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 footprint47,819

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

Job postings0

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

Both0

Companies in the footprint whose postings also name open xchange. The rest of the posting population (0) runs open xchange without a public trace on the site or in DNS, which is where job data earns its place.

03 — Who uses it

Companies on open xchange

No company names open xchange in its job postings with enough confidence to list yet; the companies below carry it on their website or in DNS.

Seen through the website or DNS only

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

47,819 companies show open xchange; 67 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 47,819 companies with open xchange on their website or in DNS. Click a country for its own page where we have one.

By country
companiesshare
United States
35,55174%
Germany
2,4995%
Canada
2,0234%
United Kingdom
1,5363%
Luxembourg
4851%
Türkiye
3841%
France
3061%
Mexico
3041%
Belgium
3031%
Spain
2591%
Australia
1890%
Switzerland
1710%
By company size
companiesshare
Self-employed
20,69543%
2-10 employees
15,65433%
11-50 employees
9,11619%
51-200 employees
1,1322%
201-500 employees
2330%
501-1000 employees
760%
1001-5000 employees
540%
5001-10000 employees
120%
10,001+ employees
140%
By industry
companiesshare
Business & finance services
7,88016%
Property & construction
6,64214%
Consumer services & leisure
6,64014%
Media & content
4,4399%
Manufacturing & industry
4,1349%
Commerce & trade
4,0488%
Public, community & associations
3,1267%
Health care
2,7146%
Hospitality & travel
2,3385%
Technology & software
2,1004%
Automotive
1,3223%
Transport, logistics & rental
7602%
05 — What their DNS and pages also say

The mail, hosting and web stack of open xchange 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.

network_solutions13,069 companies · 27%
Cloudflare7,364 companies · 15%
Microsoft 3652,731 companies · 6%
Google Workspace2,537 companies · 5%
Mailchimp2,125 companies · 4%
register_com1,869 companies · 4%
facebook_pixel1,639 companies · 3%
SendGrid1,146 companies · 2%Shopify904 companies · 2%Brevo890 companies · 2%
dmarc_report527 companies · 1%
Resend517 companies · 1%
microsoft_teams459 companies · 1%
AWS Route 53452 companies · 1%
valimail437 companies · 1%MailerLite424 companies · 1%
Cite this

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

47,819 companies carry open xchange on their website or in their DNS records; no company names it in its job postings yet. (Breaknorm, 4 November 2026, https://breaknorm.co/tools/open-xchange)
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 open xchange 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

open xchange data: questions

How many companies use open xchange?

47,819 as of 4 November 2026: 47,819 carry open xchange on their website or in their DNS records and 0 name it in their own job postings; 0 show up in both. We keep the two counts apart because they measure different things.

What does "website or DNS" mean?

Our crawler finds open xchange'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 open xchange. 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 open xchange, 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 47,819 with verified e-mails and a weekly feed of new open xchange 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 open xchange,
with the person who owns it

Connect the MCP server or the API, filter on open xchange, 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