informationbuilders.com

Valid Email Server
Domain Lookup › informationbuilders.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
informationbuilders.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-30 08:12:00 UTC · ↺ Refresh

MX Hostnames

  • alt3.aspmx.l.google.com
  • alt1.aspmx.l.google.com
  • alt4.aspmx.l.google.com
  • alt2.aspmx.l.google.com
  • aspmx.l.google.com

MX Priorities

  • alt1.aspmx.l.google.com: 5
  • alt2.aspmx.l.google.com: 5
  • aspmx.l.google.com: 1
  • alt3.aspmx.l.google.com: 10
  • alt4.aspmx.l.google.com: 10

A / AAAA Records

  • 54.152.7.27
  • 2620:12a:8001::2
  • 2620:12a:8000::2

Mail Server IPs

  • 108.177.123.26 ↩ lcscld-in-f26.1e100.net
  • 2800:3f0:4003:c0f::1b (no PTR)
  • 172.253.116.27 ↩ dj-in-f27.1e100.net
  • 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
  • 172.253.122.26 ↩ bh-in-f26.1e100.net
  • 2607:f8b0:4004:c06::1a ↩ bg-in-f26.1e100.net
  • 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
  • 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
  • 173.194.76.27 ↩ ws-in-f27.1e100.net
  • 2a00:1450:400c:c00::1a ↩ ws-in-x1a.1e100.net

SOA Record

Raw SOA brit.ns.cloudflare.com dns.cloudflare.com 2399947391 10000 2400 604800 1800
Primary NS (mname)
brit.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399947391
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

brit.ns.cloudflare.com
jaziel.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 a mx include:us._netblocks.mimecast.com ip4:192.254.121.248 ip4:38.100.34.212 ip4:192.174.90.242 include:_phishspf.knowbe4.com include:aspmx.pardot.com include:spf.protection.outlook.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; sp=reject; aspf=r; pct=100; rua=mailto:[email protected]; fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject

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

9 records
  • 168kzq19bwrkcddnv6dz94wwhdk49f42
  • 4wr2hmb0w0wqw573nzrs7x60gh0lzfmx
  • MS=ms59579281
  • _iryyy5yjw167chzhymi5y7ifibmfvsy
  • google-site-verification=40R2cSAWpwSHuGrI7lgjc0IEp-pBy205oRt8sZlGXn0
  • knowbe4-site-verification=deb69a640ef140717798c150e1fdc700
  • SPFv=spf1 a mx include:us._netblocks.mimecast.com ip4:192.254.121.248 ip4:38.100.34.212 ip4:192.174.90.242 include:_phishspf.knowbe4.com include:aspmx.pardot.com include:spf.protection.outlook.com -all
  • workplace-domain-verification=01E7CCF7-DD68-44F9-B54D-76A35F9C2BAC
  • 0ed1fe018a6f389ad72dbe41b7a130e1
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