Registered 29 years ago, no valid HTTPS certificate, the site did not answer (OSError).
Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.
| MX | 0 usgs-gov.mail.protection.outlook.com |
|---|---|
| NS | ram.ns.cloudflare.com chin.ns.cloudflare.com |
| TXT | v=spf1 include:_spf.usgs.gov include:_spf.doi.gov include:spf.protection.outlook.com include:amazonses.com include:spf-na.exlibrisgroup.com include:servers.mcsv.net include:oclcspf1.oclc.org include:oclcspf2.oclc.org include:_spf.ears.usgs.gov include:mail.zendesk.com -all openai-domain-verification=dv-4bVuhH2L4a8uRajbjEleUUZP _i32mz0qiss5l4u7vzsnsd2bzatke7k3 domain-verification=2T_Neu5ue48C21UigK-SVDxsp2WXxkG_56edL3ZXRcs amazonses:iCXvgYeeCTBsNF5P4aaQq/gAJE3NWJAehnOg3OAoBJY= atlassian-sending-domain-verification=e8e2a945-0005-46c2-9ff6-f99e72379f6f perplexity-ai-domain-verification-9g8vzv=2gvhgDT2bNqF1fJTvOD8eiMHS atlassian-domain-verification=BDNWwhbMkb/KgzHy3HEdJBunaWjCLLc1pTa1UNQLj/zH/f2zkBaWuLxSzT8UjnZV _hbyfgt08dknxtua1v3f76s538skt43l docker-verification=0b575962-d656-47f4-8fd5-5175fe2f364b |
| registrar | get.gov |
|---|---|
| registered | 1997-10-02 |
| expires | 2027-09-02 |
| last changed | 2026-08-14 |
| owner | Department of the Interior |
| country | United States |
| nameservers | chin.ns.cloudflare.com ram.ns.cloudflare.com |
| status | server transfer prohibited |
| valid | no |
|---|---|
| problem | Could not resolve host (ENODATA) |
Domain is properly signed — chain validated by an independent validating resolver
| SPF | pass v=spf1 include:_spf.usgs.gov include:_spf.doi.gov include:spf.protection.outlook.com include:amazonses.com include:spf-na.exlibrisgroup.com include:servers.mcsv.net include:oclcspf1.oclc.org include:oclcspf2.oclc.org include:_spf.ears.usgs.gov include:mail.zendesk.com -all |
|---|---|
| DMARC | pass policy reject |
| DKIM | found: k1, s1, s2, mail |
Whether mail claiming to be from this domain can be checked as genuine.
Green: clean. Red: listed. Grey: the list did not answer.
Agents get this as data. Bought through the API, the checks behind this page cost $0.070: profile $0.025 + trust $0.020 + screenshot $0.020 + site status $0.005.
MCP: add https://how.is/mcp to Claude, Codex or Cursor
(one-line install) and ask for domain_trust on usgs.gov.
Reference: /llms.txt.
IPv6. Does usgs.gov work over IPv6? See the live check on aaaa.bot — website, mail and nameservers, graded A–F.
Watch usgs.gov. DNS read at the source every 5 minutes; certificate, blocklists and expiry every 6 hours. You get an email only when something changes.
Watch — $1 / 30 days