nih.gov

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago

Domain

nih.gov

Valid Email Server

Yes

Has MX Records

✓ Yes

Email Provider

Unknown

Disposable

Free Provider

Role Account

⚠ Yes

Email Relay

Privacy Protected

Did you mean: [email protected]

Checked via [email protected] · 2026-03-23 19:35:45 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

156.40.212.210

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
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

SOA Record

                  Raw SOA
                  nihblox6.nih.gov hostmaster.nih.gov 902038 10800 1080 2592000 900                

Primary NS (mname)

nihblox6.nih.gov

Admin Email (rname)

hostmaster@nih.gov

Serial

902038

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 ip4:128.231.90.64/26 ip4:165.112.13.0/26 ip4:156.40.79.128/25 ip4:128.231.89.192/28 ip4:165.112.69.16/28 ip4:165.112.194.0/25  ip6:2607:f220:0404:8104::0/64 ip6:2607:f220:402:1a01::0/64  ip6:2607:f220:404:12e::/64 ip6:2607:f220:402:12e::/64 include:spf.protection.outlook.com ~all                  

📊 DNS lookups: 1/10

~ Soft fail (~all) — moderate enforcement

DMARC Record

✓ Reject

                    v=DMARC1; p=reject; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]; fo=1;                  

✓ Reject — strongest protection

📋 SPF alignment: Relaxed · DKIM alignment: Relaxed

📧 Reports → mailto:[email protected],mailto:[email protected]

DKIM Selectors

✓ 5 found

                      selector1._domainkey
                    

                      selector2._domainkey
                    

                      k1._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

57 records

mongodb-site-verification=P4xvHdvjB9koHJnGWdIuapplaUGKo9VP
apple-domain-verification=FTZHYv0nuXKqjeP8
atlassian-domain-verification=VhnxT3ISJLKFyasfowo1iyVXcEqztbz/3PWOQM6LP0kG9HrAlq/21h27cbqTwdxw
apple-domain-verification=rFyOPvcO8sUX2iHP
sv6eiguevqe64cojov3psnedd2
miro-verification=ce1878a9901e3785a9ee9302aaaf4b8f878ff042
amazonses:QLi7vDgXZTFrD/2qNMkfcQtCzsetuefpN50b98lKPA0=
amazonses:QJZljHq4QVLochyWJlHRtF/TQ7CgNwoHHWnOK7AjCWo=
google-site-verification=bFFD3VwenH37-hj5wbQqLUOAkLjsrX2Tp-LnN1AvpkQ
webexdomainverification.4C675B897222B136E053AB06FC0A3F65=cf14e0ca-cfec-4d2b-83ab-5971ee749040
amazonses:Oq2yjJ17I+Cqlgpxl9Pto0uQ7gwb0IpbhQFCHjPwuGo=
adobe-sign-verification=1e4a7a1987a2efa2d94b3cdcf717ec0b5d1dcbcb8c16a5d2bc4ea7c4dbcd2210
amazonses:njYRGZSzGLGsQ66bZMwxwZZF4zHx9G8JWosbZeNa7Eo=
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webexdomainverification.2494X=72426cc0-664d-4a80-a6f4-113b7f648c9d
google-site-verification=zVNJw3i2goXwxAOFiO6ubfIWhKkgRnHS82Q7F6M6Gck
atlassian-domain-verification=FfyaIO5BcqxasUU4Cuwp9/4Y3ujXrMEpfhyaPydm5lM6vqDALuZFv8QqJI6qUPVp
apple-domain-verification=G25suhrGTYqwbLNS
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amazonses:vDxikFPIS0Am8dY/BlMuOFbJ2TuF64fRwUfkUGH67bY=
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amazonses:93j7xtRaIBE5K+ERCErN+WDNFhQPQ1rY8mCD3Ut5Rqg=
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amazonses:Ckm+FeqyUMSBHOvsBsDHWeb1nuGAr6AWg5crTuJh47k=
google-site-verification=8BC5Gnatu9NBfOph_lZpZyG2eDK0iPs0V8Li0RKzin8
apple-domain-verification=c8bb3gA2SNfmH0Zx
webexdomainverification.4C675B8A8FC5B136E053AB06FC0A3F65=81f2d6dc-b5b1-4624-9e3f-278cb4163770
amazonses:EpIukSNkqrJBid632tohg9ghfR9ZOm2BsQKY8fKESvs=
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docusign=850d3223-bb46-4946-986b-2410b69ed0e7
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webexdomainverification.4C675B8AEB46B136E053AB06FC0A3F65=a9568d05-1a3d-4c2b-9f45-3b5d786db694
docker-verification=6c54ab12-d26d-44b7-978e-f60aa83a02f3
apple-domain-verification=8VumNb91MILOLiQZ
v7959lz5pgb250x8gzt0fkg7j4x1s6bw
amazonses:Socb9IMK/O81TXqIP15y3NAyd8tyEcV6waygbWSPBi0=
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identrust_validate=gQ545eXspYKimJ6IrOqCZrD5ckAPWT8GjcAlRitOVlEB
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adobe-idp-site-verification=5e85ea0ed34d3d2a09f830d0cfc77139471d15e20e771d90484e89895b0a9f1e
amazonses:6dUQp3PJw2/pPriaGheRkNX6rVRchTDJCVkzGLDtftA=
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x1htw52vr2t3416zs29gg8lq0zkw744c
SPFv=spf1 ip4:128.231.90.64/26 ip4:165.112.13.0/26 ip4:156.40.79.128/25 ip4:128.231.89.192/28 ip4:165.112.69.16/28 ip4:165.112.194.0/25 ip6:2607:f220:0404:8104::0/64 ip6:2607:f220:402:1a01::0/64 ip6:2607:f220:404:12e::/64 ip6:2607:f220:402:12e::/64 include:spf.protection.outlook.com ~all
uub8i3goc70aj1kvl0neuhle5v

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