thirteenthfloor.com

Valid Email Server
Domain Lookup › thirteenthfloor.com

Domain Overview

DNS: ✓ 1d ago Checker: ✓ 1d ago
thirteenthfloor.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-05-19 21:53:19 UTC · ↺ Refresh

MX Hostnames

  • aspmx3.googlemail.com
  • aspmx2.googlemail.com
  • aspmx.l.google.com
  • alt2.aspmx.l.google.com
  • alt1.aspmx.l.google.com

MX Priorities

  • alt2.aspmx.l.google.com: 5
  • aspmx.l.google.com: 1
  • aspmx2.googlemail.com: 10
  • aspmx3.googlemail.com: 10
  • alt1.aspmx.l.google.com: 5

A / AAAA Records

  • 172.104.31.241 ↩ lb2-c217-pub.pressidium.com
  • 45.79.152.72 ↩ lb1-c217-pub.pressidium.com

Mail Server IPs

  • 172.253.116.27 ↩ dj-in-f27.1e100.net
  • 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
  • 172.253.63.26 ↩ bi-in-f26.1e100.net
  • 2607:f8b0:4004:c1b::1a ↩ wv-in-f26.1e100.net
  • 108.177.123.26 ↩ lcscld-in-f26.1e100.net
  • 2800:3f0:4003:c0f::1b (no PTR)
  • 172.253.116.26 ↩ dj-in-f26.1e100.net

SOA Record

Raw SOA ns-149.awsdns-18.com awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-149.awsdns-18.com
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-546.awsdns-04.net
ns-1086.awsdns-07.org
ns-149.awsdns-18.com
ns-1734.awsdns-24.co.uk

SPF Record

✗ Missing

No SPF record — domain is unprotected against spoofing.

⚠ No SPF record found. Email servers cannot verify authorized senders.

DMARC Record

✗ p=none
v=DMARC1; p=none; pct=100; fo=1; ri=3600; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]

DKIM Selectors

✓ 4 found
default._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default

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

All TXT Records

3 records
  • openai-domain-verification=dv-1EtuigmtFAB8Q8TZBA3wgLKP
  • "v=spf1 include:_spf.google.com include:servers.mcsv.net include:mailgun.org include:ticketure.com include:amazonses.com include:mail.zendesk.com ~all"
  • google-site-verification=4mQSuOnd4By705aCp9X4bXcJFH3I8jfeNAD9CqGTRv4
Full email verification for thirteenthfloor.com

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