Is nih.gov a valid email domain?
Mail for nih.gov is handled by 8 servers, with nihcesxwayst06.hub.nih.gov tried first.
It is not a free provider and is not on our disposable list, so addresses here usually belong to a company, school or other organisation.
No SPF record was found. DMARC is set to reject.
Check an email address at nih.gov
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MX records
| Priority | Mail server | Resolves to |
|---|---|---|
| 10 | nihcesxwayst06.hub.nih.gov | 165.112.13.54, 2607:f220:402:1a01::a570:d36 |
| 10 | nihcesxwayst05.hub.nih.gov | 165.112.13.46, 2607:f220:402:1a01::a570:d2e |
| 10 | nihcesxwayst04.hub.nih.gov | 165.112.13.42, 2607:f220:402:1a01::a570:d2a |
| 10 | nihcesxwayst03.hub.nih.gov | 165.112.13.34, 2607:f220:402:1a01::a570:d22 |
| 10 | nihcesxway6.hub.nih.gov | 128.231.90.121, 2607:f220:404:8104::80e7:5a79 |
| 10 | nihcesxway5.hub.nih.gov | 128.231.90.120, 2607:f220:404:8104::80e7:5a78 |
| 10 | nihcesxway4.hub.nih.gov | 128.231.90.119, 2607:f220:404:8104::80e7:5a77 |
| 10 | nihcesxway3.hub.nih.gov | 128.231.90.125, 2607:f220:404:8104::80e7:5a7d |
SPF
No record found
DMARC
Policy: reject
v=DMARC1; p=reject; rua=mailto:8idhoybh@ag.us.dmarcian.com,mailto:reports@dmarc.cyber.dhs.gov; ruf=mailto:8idhoybh@fr.us.dmarcian.com; fo=1;
Disposable?
No, not on our disposable list.
Free provider?
No, not a known free provider.
What this means for your email list
What this means for addresses at this domain
The domain accepts mail, but whether a given person's mailbox exists depends on that organisation. Company domains often have staff who left, role mailboxes like info@ and sales@, and sometimes catch-all rules that accept everything. Verify the individual address before you send.
Sender authentication
nih.gov has a strict DMARC policy (reject): mail that fails authentication is refused, which protects its brand from spoofing and means anyone sending as nih.gov must have SPF and DKIM set up correctly.
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Sign up to get a report summary →Frequently asked questions
- Is nih.gov a valid email domain?
- Yes. nih.gov publishes 8 MX records and can receive email. Whether a particular mailbox exists is a separate question that only a mailbox check can answer.
- Is nih.gov a disposable email domain?
- No. nih.gov is not on our disposable list. The list is updated regularly, and new throwaway domains appear all the time.
- What are the MX records for nih.gov?
- nihcesxwayst06.hub.nih.gov (priority 10); nihcesxwayst05.hub.nih.gov (priority 10); nihcesxwayst04.hub.nih.gov (priority 10); nihcesxwayst03.hub.nih.gov (priority 10); nihcesxway6.hub.nih.gov (priority 10); nihcesxway5.hub.nih.gov (priority 10); nihcesxway4.hub.nih.gov (priority 10); nihcesxway3.hub.nih.gov (priority 10).
- Does nih.gov have SPF and DMARC?
- SPF: no record found. DMARC: yes, policy reject.