usgs.gov

Valid Email Server
Domain Lookup › usgs.gov

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
usgs.gov
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-22 23:23:54 UTC · ↺ Refresh

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MX Hostnames

  • usgs-gov.mail.protection.outlook.com

MX Priorities

  • usgs-gov.mail.protection.outlook.com: 0

A / AAAA Records

  • 137.227.233.178 ↩ vip-natweborww53.wr.usgs.gov
  • 2001:49c8:8000:121d::78 (no PTR)

Mail Server IPs

  • 52.101.11.12 ↩ mail-sa9pr09cu00104.inbound.protection.outlook.com
  • 52.101.8.50 ↩ mail-dm6pr09cu00202.inbound.protection.outlook.com
  • 52.101.9.19 ↩ mail-blapr09cu00103.inbound.protection.outlook.com
  • 52.101.8.52 ↩ mail-ds0pr09cu00104.inbound.protection.outlook.com
  • 2a01:111:f403:f904:: ↩ mail-dm6pr09cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:f900::1 ↩ mail-blapr09cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:f904::1 ↩ mail-ds0pr09cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:f90e::1 ↩ mail-sa9pr09cu00101.inbound.protection.outlook.com

SOA Record

Raw SOA chin.ns.cloudflare.com dns.cloudflare.com 2399154202 10000 2400 604800 1800
Primary NS (mname)
chin.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399154202
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

ram.ns.cloudflare.com
chin.ns.cloudflare.com

SPF Record

✓ Strict (-all)
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
📊 DNS lookups: 10/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1;p=reject;rua=mailto:[email protected],mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]

DKIM Selectors

✓ 4 found
mail._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

5 records
  • amazonses:iCXvgYeeCTBsNF5P4aaQq/gAJE3NWJAehnOg3OAoBJY=
  • docker-verification=0b575962-d656-47f4-8fd5-5175fe2f364b
  • hj-ownership=iR9zRfDq6kZTdudkxMMx
  • SPFv=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
  • _hbyfgt08dknxtua1v3f76s538skt43l
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