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Tools · optimal blue · United States

Companies using optimal blue in United States

As of 5 November 2026, 181 US companies show optimal blue: 152 on their website or in DNS records and 31 in their own job postings, led by Chicago.

As of 5 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.

Top city
Chicago · 4
In both sources
2
Most common size
201-500 employees
Team that names it most
Finance & accounting · 26 postings
Top industry, posting companies
Business & finance services
181US companies show optimal blue, all sources
152on their website or in DNS records
31name it in job postings · 36 open
Chicagocity with most optimal blue companies · 4
02Who uses it

US companies on optimal blue

Every company in the country whose own postings name the tool; job boards and portals left out.

30 US companies match this filter; 181 show optimal blue in total.

Open the sales or marketing leader at each one with a verified e-mail, or get new US optimal blue users every Monday.

Start free, no card. The first 20 are above; e-mails are verified at the mail server when you open them.

03Breakdown

By city, company size, industry and team

Footprint tables first (website or DNS), then the companies whose postings name optimal blue.

Footprint by city
companiesshare
Chicago
43%
Columbia
43%
Irvine
32%
Tampa
32%
Anaheim
21%
Brookfield
21%
Cleveland
21%
Englewood
21%
Fairfax
21%
Frisco
21%
Footprint by company size
companiesshare
Self-employed
21%
2-10 employees
149%
11-50 employees
3020%
51-200 employees
6039%
201-500 employees
3020%
501-1000 employees
117%
1001-5000 employees
43%
5001-10000 employees
11%
Posting companies by city
companiesshare
Austin
13%
Bānk
13%
Englewood Cliffs
13%
Fort Lauderdale
13%
Houston
13%
Jacksonville
13%
Livonia
13%
Madison
13%
Melville
13%
Middle River
13%
Orlando
13%
Reston
13%
Posting companies by size
companiesshare
Self-employed
13%
2-10 employees
13%
11-50 employees
310%
51-200 employees
619%
201-500 employees
826%
501-1000 employees
413%
1001-5000 employees
723%
5001-10000 employees
13%
Posting companies by industry
companiesshare
Business & finance services
2684%
Public, community & associations
13%
Manufacturing & industry
13%
Media & content
13%
Property & construction
13%
Technology & software
13%
Postings by function
postings · companies
Finance & accounting
26 · 14
IT operations & business systems
1 · 1
Product, program & project management
1 · 1
Software engineering
1 · 1
Cite this

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

181 US companies show optimal blue: 152 carry it on their website or in their DNS records, 31 name it in their own job postings, 2 do both. (Breaknorm, 5 November 2026, https://breaknorm.co/tools/optimal-blue/united-states)
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 →

  • Job postingsRead hourly from the applicant tracking systems behind US career sites. A tool counts when the employer's own text names it as the team's system.
  • CountryFrom the company's own website: imprint, address, phone prefix and language, with a confidence score. Not the posting's location.
  • Website and DNSScripts and embeds on the company's pages, plus SPF, DKIM, MX and CNAME records of its domain that point at the vendor.
  • ExclusionsJob boards, portals and aggregators are kept out of company lists.
FAQ

optimal blue in United States: questions

Is this every US company on optimal blue?

It is every US company whose website, DNS records or own job postings show it: 181 in total. Companies that use optimal blue without any public trace are not counted.

What does "United States" mean here?

The country of the company, from its own website (imprint, address, phone prefix, language), not where the posting is located. A German company hiring in Paris still counts as German.

How do I get the US list with e-mails?

Sign up, filter companies on optimal blue and United States, and open the people you want. Counting is free; the first 1,000 results are too.

Companies and people

Get this list your way

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Every US company on optimal blue,
with the person who owns it

Filter on optimal blue and United States. Start free, no card.

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