Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
nhlbi.nih.gov
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 05:19:46 UTC · ↺ Refresh
MX Hostnames
- nihcesxway3.hub.nih.gov
- nihcesxwayst05.hub.nih.gov
- nihcesxwayst04.hub.nih.gov
- nihcesxway4.hub.nih.gov
- nihcesxway6.hub.nih.gov
- nihcesxwayst06.hub.nih.gov
- nihcesxway5.hub.nih.gov
- nihcesxwayst03.hub.nih.gov
MX Priorities
- 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
- nihcesxway5.hub.nih.gov: 10
A / AAAA Records
- 156.40.18.44
- 2607:f220:414:22e:156:40:18:44
Mail Server IPs
- 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
- 165.112.13.46 ↩ nihcesxwayst05.hub.nih.gov
- 2607:f220:402:1a01::a570:d2e ↩ nihcesxwayst05.hub.nih.gov
SOA Record
Raw SOA
nihblox6.nih.gov hostmaster.nih.gov 175886 10800 1080 2592000 900
Primary NS (mname)
nihblox6.nih.gov
Admin Email (rname)
hostmaster@nih.gov
Serial
175886
Refresh
10800s
Retry
1080s
Expire
2592000s
Minimum TTL
900s
Nameservers (NS)
ns3.nih.gov
ns2.nih.gov
ns.nih.gov
SPF Record
✓ Soft Fail (~all)
v=spf1 include:nih.gov include:spf.dynect.net ~all
📊 DNS lookups: 2/10
~ 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
✓ 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
7 records- apple-domain-verification=Fqka2Zyd4V2Ln8v9
- google-site-verification=SikHTavziaLQxWbKgTPx84A66MrYzMfqDL9EyUmzzUo
- identrust_validate=iMVHkuWIt/uqBi02DpLhjimbf8iL94XnFoRnx+3j4piU
- adobe-idp-site-verification=4315d2f178ed6c480f929f33e724089b4339993cf07e84687c71767a786118c7
- bI2oDCD5n13t5ni4fdMdq3bFsKBDpwKfU7cvOecdqrhnDwUZFEWnE+eeSpjSRUJWGXQDM/g1buXDIVipZX680A==
- SPFv=spf1 include:nih.gov include:spf.dynect.net ~all
- google-site-verification=XNz-Yhyq0SycjbWngruQAqqcXOd1k2U1wCid5P4hdoQ
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