Breaknorm
Sign inStart free

Product

SignalsPeopleCompaniesLocal businessesMCP and API

Plays

Post engagersTeam build-outChampion movedHiring surgeNewly fundedLookalikesAll plays

Data

Coverage by countryHiring dataJob changesEmail verificationCompanies by toolWho is hiringMarket mapsOutboundCompany profilesCompare
PricingDatasetsDocsSign in
Tools · mxguardian · United States

Companies using mxguardian in United States

As of 5 November 2026, 238 US companies show mxguardian: 238 on their website or in DNS records and 0 in their own job postings, led by Las Vegas.

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

Top city
Las Vegas · 17
In both sources
0
Team that names it most
–
238US companies show mxguardian, all sources
238on their website or in DNS records
0name it in job postings · 0 open
Las Vegascity with most mxguardian companies · 17
02Who uses it

US companies on mxguardian

No US company names mxguardian in its job postings yet; the 238 companies in the footprint carry it on their website or in DNS.

0 US companies match this filter; 238 show mxguardian in total.

Open the sales or marketing leader at each one with a verified e-mail, or get new US mxguardian 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 mxguardian.

Footprint by city
companiesshare
Las Vegas
177%
Goshen
83%
Afton
73%
Houston
73%
Greenwood
63%
Severn
63%
Elkhart
31%
Hammond
31%
Philadelphia
31%
Agawam
21%
Footprint by company size
companiesshare
Self-employed
6728%
2-10 employees
8335%
11-50 employees
6728%
51-200 employees
177%
201-500 employees
21%
501-1000 employees
10%
1001-5000 employees
10%
Posting companies by city
companiesshare
Posting companies by size
companiesshare
Posting companies by industry
companiesshare
Postings by function
postings · companies
Cite this

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

238 US companies show mxguardian: 238 carry it on their website or in their DNS records, 0 name it in their own job postings, 0 do both. (Breaknorm, 5 November 2026, https://breaknorm.co/tools/mxguardian/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

mxguardian in United States: questions

Is this every US company on mxguardian?

It is every US company whose website, DNS records or own job postings show it: 238 in total. Companies that use mxguardian 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 mxguardian 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

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

Every US company on mxguardian,
with the person who owns it

Filter on mxguardian 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