cc.nih.gov

Valid Email Server
Domain Lookup › cc.nih.gov

Domain Overview

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

Checked via [email protected] · 2026-03-30 16:39:21 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 165.112.169.95
  • 2607:f220:412:105::201:2f

Mail Server IPs

  • 165.112.13.54 ↩ nihcesxwayst06.hub.nih.gov
  • 2607:f220:402:1a01::a570:d36 ↩ nihcesxwayst06.hub.nih.gov
  • 165.112.13.46 ↩ nihcesxwayst05.hub.nih.gov
  • 2607:f220:402:1a01::a570:d2e ↩ nihcesxwayst05.hub.nih.gov
  • 165.112.13.42 ↩ nihcesxwayst04.hub.nih.gov
  • 2607:f220:402:1a01::a570:d2a ↩ nihcesxwayst04.hub.nih.gov
  • 165.112.13.34 ↩ nihcesxwayst03.hub.nih.gov
  • 2607:f220:402:1a01::a570:d22 ↩ nihcesxwayst03.hub.nih.gov
  • 128.231.90.120 ↩ nihcesxway5.hub.nih.gov
  • 2607:f220:404:8104::80e7:5a78 ↩ nihcesxway5.hub.nih.gov

SOA Record

Raw SOA nihblox6.nih.gov hostmaster.nih.gov 2544841 10800 1080 2592000 900
Primary NS (mname)
nihblox6.nih.gov
Admin Email (rname)
hostmaster@nih.gov
Serial
2544841
Refresh
10800s
Retry
1080s
Expire
2592000s
Minimum TTL
900s

Nameservers (NS)

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

SPF Record

✓ Soft Fail (~all)
v=spf1 ip6:2607:f220:412:10a::0/64 include:nih.gov ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

4 records
  • BXxKPa1df0cBGrX9FEDLYamlMoAsRXOy3hDO7IHpv/3TPs5MOGUfL9rlikTQ9HrYhTt2vcG5SU3fEfcNkM/YnQ==
  • SPFv=spf1 ip6:2607:f220:412:10a::0/64 include:nih.gov ~all
  • amazonses:s4aLEvF9SStxOagVpLQ9wi+DZyhsdlYz0+a4Q5TwFgk=
  • adobe-idp-site-verification=229aaad64b8734abfdb48167b72d0a2042be38748e075d08c08c702672e6d62c
Full email verification for cc.nih.gov

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits