uspto.gov

Valid Email Server
Domain Lookup › uspto.gov

Domain Overview

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

Checked via [email protected] · 2026-03-21 01:57:04 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

  • uspto-gov.mail.protection.outlook.com: 5

A / AAAA Records

  • 172.64.152.64 (no PTR)
  • 104.18.35.192 (no PTR)
  • 2a06:98c1:3107::ac40:9840
  • 2a06:98c1:3103::6812:23c0

Mail Server IPs

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

SOA Record

Raw SOA dns3.uspto.gov nmb.uspto.gov 2014115924 10800 1080 2419200 900
Primary NS (mname)
dns3.uspto.gov
Admin Email (rname)
nmb@uspto.gov
Serial
2014115924
Refresh
10800s
Retry
1080s
Expire
2419200s
Minimum TTL
900s

Nameservers (NS)

gold.foundationdns.org
gold.foundationdns.net
gold.foundationdns.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:uspto.gov._nspf.valigov.email include:%{i}._ip.%{h}._ehlo.%{d}._spf.valigov.email ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

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

DKIM Selectors

✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1

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

All TXT Records

13 records
  • perplexity-ai-domain-verification-7tdkgd=M7VyHULqPpVV3g4SsM4BNc1mR
  • SPFv=spf1 include:uspto.gov._nspf.valigov.email include:%{i}._ip.%{h}._ehlo.%{d}._spf.valigov.email ~all
  • webexdomainverification.7PUPU=2a587b5a-c181-4a6c-9d10-a13dcaa747bd
  • 3FKeZ5CH9TEaLgiiioa9/iDVB0WPJofaHBuumk1YRmcuggWFX3v3gDlSw5uSIbaSuvm/FsOYPRzhM87BHQ+ImA==
  • MS=ms28666523
  • SnTiaz2QHOuDsjncHy2wc6dZmnzEFxbqKLWgzzrfBidPblmIGRxS9jP28Zb4xPjhhlE2YBm98Mu+DhbxxGOa7A==
  • _qf2w9oo2ieh425rh0b6gjpp829vih2b
  • adobe-idp-site-verification=fd06710ade06e49a5be3b877d16463b3f5f050a1e54eaaa1daff14f8da83993f
  • apple-domain-verification=DQ6lsHErU2gvVyqF
  • facebook-domain-verification=6wqv4rmxkothypv5gij5080967l5ws
  • google-site-verification=5eOb2YylR8fDTIkmIs3N0CaJ_IHjjikNS-Z7BDb9jvw
  • google-site-verification=MB6vnwbxkyN6STcgBAa5U-W1H7VhU62fSuT95KrWhlk
  • jetbrains-domain-verification=8sj6e0d8s6q4fvu86jcfzp0g5
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