nih.hhs.gov

Valid Email Server
Domain Lookup › nih.hhs.gov

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
nih.hhs.gov
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-25 20:23:42 UTC · ↺ Refresh

MX Hostnames

  • nihcesxwayst03.hub.nih.gov
  • nihcesxway4.hub.nih.gov
  • nihcesxwayst05.hub.nih.gov
  • nihcesxwayst06.hub.nih.gov
  • nihcesxway3.hub.nih.gov
  • nihcesxwayst04.hub.nih.gov
  • nihcesxway5.hub.nih.gov
  • nihcesxway6.hub.nih.gov

MX Priorities

  • nihcesxway5.hub.nih.gov: 10
  • nihcesxway4.hub.nih.gov: 10
  • nihcesxway3.hub.nih.gov: 10
  • nihcesxway6.hub.nih.gov: 10
  • nihcesxwayst06.hub.nih.gov: 10
  • nihcesxwayst05.hub.nih.gov: 10
  • nihcesxwayst04.hub.nih.gov: 10
  • nihcesxwayst03.hub.nih.gov: 10

A / AAAA Records

No A/AAAA records found.

Mail Server IPs

  • 128.231.90.120 ↩ nihcesxway5.hub.nih.gov
  • 2607:f220:404:8104::80e7:5a78 ↩ nihcesxway5.hub.nih.gov
  • 128.231.90.119 ↩ nihcesxway4.hub.nih.gov
  • 2607:f220:404:8104::80e7:5a77 ↩ nihcesxway4.hub.nih.gov
  • 128.231.90.125 ↩ nihcesxway3.hub.nih.gov
  • 2607:f220:404:8104::80e7:5a7d ↩ nihcesxway3.hub.nih.gov
  • 128.231.90.121 ↩ nihcesxway6.hub.nih.gov
  • 2607:f220:404:8104::80e7:5a79 ↩ nihcesxway6.hub.nih.gov
  • 165.112.13.54 ↩ nihcesxwayst06.hub.nih.gov
  • 2607:f220:402:1a01::a570:d36 ↩ nihcesxwayst06.hub.nih.gov

SOA Record

Raw SOA ns.nih.gov hostmaster.nih.gov 20629 10800 1080 2592000 900
Primary NS (mname)
ns.nih.gov
Admin Email (rname)
hostmaster@nih.gov
Serial
20629
Refresh
10800s
Retry
1080s
Expire
2592000s
Minimum TTL
900s

Nameservers (NS)

ns2.nih.gov
ns.nih.gov
ns3.nih.gov

SPF Record

✓ Soft Fail (~all)
v=spf1 include:nih.gov ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; fo=1; ri=3600; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]

DKIM Selectors

✓ 1 found
selector1._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

2 records
  • SPFv=spf1 include:nih.gov ~all
  • vb0oKo9BR/XWWGZUxW2RWulQvsmDn1RH+nm5mJRVBhILEhlW0XovXVGMvw0XKSSjTb3zmGPnLFn8HVLULR/nNA==
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