Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
firsthorizon.com
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 02:12:30 UTC · ↺ Refresh
MX Hostnames
- mxa-00053e01.gslb.pphosted.com
- mxb-00053e01.gslb.pphosted.com
MX Priorities
- mxb-00053e01.gslb.pphosted.com: 10
- mxa-00053e01.gslb.pphosted.com: 10
A / AAAA Records
- 23.49.248.28 ↩ a23-49-248-28.deploy.static.akamaitechnologies.com
- 23.49.248.21 ↩ a23-49-248-21.deploy.static.akamaitechnologies.com
Mail Server IPs
- 148.163.138.45 ↩ mx0b-00053e01.pphosted.com
SOA Record
Raw SOA
3dns1.firsthorizon.com tech-support.ftbonline.com 2026031705 900 3600 604800 3600
Primary NS (mname)
3dns1.firsthorizon.com
Admin Email (rname)
tech-support@ftbonline.com
Serial
2026031705
Refresh
900s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
use1.akam.net
usc3.akam.net
usc4.akam.net
use3.akam.net
use2.akam.net
eur6.akam.net
ns1-198.akam.net
SPF Record
✓ Strict (-all)
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → 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
21 records- knowbe4-site-verification=dda9a5d463ac5014eb2f640eae206948
- google-gws-recovery-domain-verification=54747913
- MS=ms49040208
- _jwlm2j1y2vmbopfzxv2o86atwhlz9vf
- docusign=4598ea2e-2ac6-4786-9390-0e6925befa74
- MS=A8A8E31400E72F53E273835DBF4291AAA68A47C4
- google-site-verification=sGXTDE_RK3tTX-JRTkfmFJKaahqogJmbuiZ0CNvIrnw
- cisco-ci-domain-verification=44c3b8a8ef9d64f70ce96a0067cb9a6eec2e8619a4fa57896bd19d8cc6535e
- docusign=1bb714e8-d671-4975-b292-96f2ef3414ef
- atlassian-domain-verification=uaKcLXrM2jUmMgNckXF1cKHCskU3eGvB2M7tXOkhDu6JzHA9A1d6VSkh2K9d7F65
- Rsl5bgWQFxJfy561LhTpri+tLOcdBIFrdqPxXPLWBOWIcHY/pnzm9l/tsyxdAqCBwx2x4k0/4KthUpHJvkXDPg==
- figma-domain-verification=234cd459abb4c1e24d928512204c2c136b37f1f90d26ebcf93459c7b50f338db-1738698266
- SPFv=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com -all
- gkD9iYM+aSPetEBngJQbYpZIJLZIGtbz4D86YMNEyq/98O98GVp/AygnvHnNffwdnGjdMU6D8tipV8jknITkHA==
- google-site-verification=CsBF67LXJB10Q1SxchClDvGwQV98ucmwwjH6bRellNY
- webexdomainverification.39OW4=d7227a69-4ca1-4ccd-a06c-32f453b1dd2f
- miro-verification=e5a99858e71822d8195083209721b76baf9faf32
- b0bdd9bf-88b8-4c6e-9f6c-6527bd0ae130
- sitecore-domain-verification=27dff22572604e609b1938bd4b981fe7
- Dynatrace-site-verification=9c01affb-ae74-4d9e-b7c8-cc311c3037d1__nbij34beul1t62loaicttneq5k
- cursor-domain-verification-accc0v=Rf8i6TGoUPGNLFVk6GbEAgQ0w
Full email verification for firsthorizon.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits