nsf.gov

Valid Email Server
Domain Lookup › nsf.gov

Domain Overview

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

Checked via [email protected] · 2026-04-04 19:31:21 UTC · ↺ Refresh

MX Hostnames

  • alt2.us.etp.fireeyegov.com
  • primary.us.etp.fireeyegov.com
  • alt3.us.etp.fireeyegov.com
  • alt1.us.etp.fireeyegov.com

MX Priorities

  • alt2.us.etp.fireeyegov.com: 30
  • alt1.us.etp.fireeyegov.com: 20
  • primary.us.etp.fireeyegov.com: 10
  • alt3.us.etp.fireeyegov.com: 40

A / AAAA Records

  • 128.150.221.244 ↩ nsf.gov
  • 2620:10f:6002:221::244 ↩ nsf.gov

Mail Server IPs

  • 15.200.32.4 ↩ mta-pswhniu.email.us.etp.fireeyegov.com
  • 15.200.32.5 ↩ mta-k1cz7zl.email.us.etp.fireeyegov.com
  • 15.200.32.6 ↩ mta-hfpw1ne.email.us.etp.fireeyegov.com

SOA Record

Raw SOA p-dns-i-gridmstr01.nsf.gov postmaster.nsf.gov 392826 10800 1080 2419200 900
Primary NS (mname)
p-dns-i-gridmstr01.nsf.gov
Admin Email (rname)
postmaster@nsf.gov
Serial
392826
Refresh
10800s
Retry
1080s
Expire
2419200s
Minimum TTL
900s

Nameservers (NS)

ns1.nsf.gov
ns2.nsf.gov
ns3.nsf.gov

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:128.150.5.20/26 ip4:66.77.7.161/32 ip4:66.77.15.226/32 ip4:128.150.130.200/31 ip4:15.200.32.0/24 ip4:128.150.225.100 ip4:65.123.16.240/28 ip4:65.127.216.64/27 ip4:3.220.190.25 ip4:3.221.22.181 ip4:35.153.165.194 ip4:18.235.253.50 ip4:23.23.239.161 ip4:52.37.117.118 ip4:35.162.59.88 ip6:2620:10f:6001:5::20/121 include:spf.constantcontact.com include:spf.protection.outlook.com include:_spf.salesforce.com include:app.aventri.com include:amazonses.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✓ Reject
v=DMARC1;p=reject; fo=1; pct=100;rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],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
✓ DKIM properly configured for selector: selector1

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

All TXT Records

22 records
  • amazonses:CJeGepY8qu0s5Rvnp0WG10sbMjRq+6TZ7fiY6bMqpiI=
  • ZOOM_verify_e-wubZa8RVevvUsuV9EDjg
  • _lzfje4ty3ldoyjyctn0ynh388feixlo
  • pardot392062=053f2d10e7f4c1b927a691aaad73b9b3e7907aa4c63f6eb1213ac7d56751e6f2
  • adobe-sign-verification=386fe6a5405fa717bbebc4eb4033172a5a3ae93031a11c51f4c2e96d5036dace
  • google-site-verification=vA4yjJZWJbPcVjZIBv-mY5xH88T2uNrEQTfsITLtt4s
  • ShNmcKFFVegkbrLv/ZWIayChihj/6ex8I90IpRSXQBkn1Tsx45u+8mCFusWDhJGae2kekkYKk9ufjRoo3NfcEg==
  • cisco-ci-domain-verification=31282763ef63b65d7fbe70a761e5bb83dbb03877bd585e5d6f9ce91b988d419a
  • pardot392062=becfd95f24258e3fc13fcd1a1e1180d727c56b4be4d260083f9cd9b5c9b6c796
  • ZOOM_verify_vIOQy6f2SQWeZ2977lDjcQ
  • SPFv=spf1 ip4:128.150.5.20/26 ip4:66.77.7.161/32 ip4:66.77.15.226/32 ip4:128.150.130.200/31 ip4:15.200.32.0/24 ip4:128.150.225.100 ip4:65.123.16.240/28 ip4:65.127.216.64/27 ip4:3.220.190.25 ip4:3.221.22.181 ip4:35.153.165.194 ip4:18.235.253.50 ip4:23.23.239.161 ip4:52.37.117.118 ip4:35.162.59.88 ip6:2620:10f:6001:5::20/121 include:spf.constantcontact.com include:spf.protection.outlook.com include:_spf.salesforce.com include:app.aventri.com include:amazonses.com ~all
  • amazonses:Xen13otWmW+wYsvK3OOWVwVweAySkrZvw4bkN6B8DS0=
  • dtm-domain-verification=hhhDP2wLLViJtESmc7Ta3p4TebJnbXRN6QgO17iUa84
  • have-i-been-pwned-verification=4f69051491297bd79446011a4ad80df8
  • cisco-ci-domain-verification=668a8a48d9102045865249e856890fb34daf8e2b743f21f0c47df1819f8c46db
  • amazonses:WZKkPkyla+989ZOi22G9mHBRQ5+AFckOtwOzHCrGjw0=
  • amazonses:DamZDYghwrc36rQV5r31e65CG+IMCDnwWTHIYOBhJXw=
  • _e2bgk5emxy2urhc02hbj3qdfio78rre
  • amazonses:KT2VTwGZXoLetXUWN88a5yYAGXBROcTpc2ZnkOfLDJs=
  • atlassian-domain-verification=ZxoQv8eEes8m9y/CQit7XinKIZ2stkuJYobPGxyfb2Vawpwx53WuHXUn1jXwbOSH
  • pardot392062=05fbda79c7018dd8f27b04ea0fd2610c38a298a7f67d08e2ff95fa3c8942dbb2
  • <metaname="zoom-domain-verification"content="ZOOM_verify_b3xjZjUUQx-tJoqy4aCUyg">
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