fda.gov

Valid Email Server
Domain Lookup › fda.gov

Domain Overview

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

Checked via [email protected] · 2026-03-17 22:12:28 UTC · ↺ Refresh

MX Hostnames

  • smtp8.fda.gov
  • smtp9.fda.gov
  • smtp7.fda.gov
  • smtp6.fda.gov

MX Priorities

  • smtp6.fda.gov: 10
  • smtp9.fda.gov: 10
  • smtp8.fda.gov: 10
  • smtp7.fda.gov: 10

A / AAAA Records

  • 23.206.172.25 ↩ a23-206-172-25.deploy.static.akamaitechnologies.com
  • 23.206.172.42 ↩ a23-206-172-42.deploy.static.akamaitechnologies.com
  • 2600:141b:1c00:36::17d2:5cb1
  • 2600:141b:1c00:36::17d2:5caa

Mail Server IPs

  • 150.148.19.43 ↩ smtp6.fda.gov
  • 2607:f220:300:402:1000::30 ↩ smtp6.fda.gov
  • 150.148.18.44 ↩ smtp9.fda.gov
  • 2607:f220:300:202:1000::31 ↩ smtp9.fda.gov
  • 150.148.18.43 ↩ smtp8.fda.gov
  • 2607:f220:300:202:1000::30 ↩ smtp8.fda.gov
  • 150.148.19.44 ↩ ext-smtp.fda.gov
  • 2607:f220:300:402:1000::31 ↩ smtp7.fda.gov

SOA Record

Raw SOA ns4.fda.gov dnsadmin.fda.hhs.gov 2021091357 10800 1080 2419200 900
Primary NS (mname)
ns4.fda.gov
Admin Email (rname)
dnsadmin@fda.hhs.gov
Serial
2021091357
Refresh
10800s
Retry
1080s
Expire
2419200s
Minimum TTL
900s

Nameservers (NS)

a1-242.akam.net
a2-65.akam.net
a24-66.akam.net
a20-65.akam.net
a13-64.akam.net
a7-67.akam.net

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.fda.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],mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected],mailto:[email protected]

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

17 records
  • dZbV+0DRySs9wEKyoyX85nwTMJN6TX7SJ4Imh+uTXak5Ps5JnMhZFfKFe8efScPW04tj7oErmE4HUwRkQiUHSw==
  • identrust_validate=S0MNbkM5L+oiB5jyFKX0Hu8G0oony8eebRYByXxdxA9o
  • RkQjM5mARE3LHFCQ454owCcYmNyZVV3lM3ziXSPPWtCW2/xeFfwDOYtSzHx1bO5BxQTV9hcMjMr/00cLSfQ/GA==
  • identrust_validate=c7KW+Ztf7fiYpL/1dimy5BACS/7wAWQAM+0vrb32x8qs
  • cisco-ci-domain-verification=74f9a92409e8b5db0b46652e631823388bcc0461ced801a6b1aa64912b1ec91a
  • amazonses:jdV8OLJfTXw9mxS1imtjFUwKFRGSek+dBX1mXWxE2Es=
  • jamf-site-verification=PGVYWecttOGQ2AWnehEHWQ
  • identrust_validate=4JTBEWb4UcAjNl/lyEYdU+hWXoNWrn9TdDN8Z3OvGSBG
  • FMICzGkJO5j02YNdmENBs5kgzkmhZC/fMYTvO5fowMXe
  • MS=ms48783525
  • webexdomainverification.11G31=8411e648-086b-4727-aca0-c784ecb9827e
  • smartsheet-gov-site-validation=HsHsNQ2BWzqEo3REvnA4aHm-csXa-eHu
  • openai-domain-verification=dv-AxQqxffHhvOZOt4t4C17dZSm
  • identrust_validate=o4/9QHV5pc4hVjOw4+Ebgwt4DdfKspg017PqghCYCY01
  • identrust_validate=zXXOEi6CQ2E8NN+fqgQ0q+KVdRi7KOa6XTwefj9zhOe6
  • ZOOM_verify_vTEkbQm_QTOaBDWdXKwrAw
  • SPFv=spf1 include:_spf.fda.gov ~all
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