fiberfirst.com

Valid Email Server
Domain Lookup › fiberfirst.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
fiberfirst.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-23 17:43:32 UTC · ↺ Refresh

MX Hostnames

  • fiberfirst-com.mail.protection.outlook.com

MX Priorities

  • fiberfirst-com.mail.protection.outlook.com: 0

A / AAAA Records

  • 141.193.213.21 (no PTR)
  • 141.193.213.20 (no PTR)

Mail Server IPs

  • 52.101.41.54 ↩ mail-sj2pr05cu00506.inbound.protection.outlook.com
  • 52.101.194.19 ↩ mail-ch5pr02cu00303.inbound.protection.outlook.com
  • 52.101.42.16 ↩ mail-co1pr05cu00300.inbound.protection.outlook.com
  • 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
  • 2a01:111:f403:f90c:: ↩ mail-sn1pr03cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:f90d::1 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:c946::2 ↩ mail-ch4pr04cu00102.inbound.protection.outlook.com
  • 2a01:111:f403:c92c::1 ↩ mail-dm6pr03cu00401.inbound.protection.outlook.com

SOA Record

Raw SOA ns-880.awsdns-46.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-880.awsdns-46.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-880.awsdns-46.net
ns-1173.awsdns-18.org
ns-2014.awsdns-59.co.uk
ns-6.awsdns-00.com

SPF Record

✗ Missing

No SPF record — domain is unprotected against spoofing.

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

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

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

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

All TXT Records

13 records
  • 4ioteg17ic4tt42c1hg5kp59h7
  • 7sj4qgfhfn8d2sqcid3f4kn1v8
  • "v=spf1 ip4:52.203.41.93 ip4:66.182.208.9 ip4:149.120.66.4 ip4:38.13.123.250 ip4:75.110.181.11 ip4:72.176.20.173 include:spf.protection.outlook.com
  • apple-domain-verification=rHZQLZueArZVCYXL
  • cfjl6t2cpbkgu294dja1cv3c55
  • d01eicul5ab5fib9vg3c29vqms
  • google-site-verification=TVE2nwpwSnmYDHRuf6oJxf89p2Lz5KKYQrdtfWo2Kto
  • include:245269913.spf06.hubspotemail.net
  • include:spf.constantcontact.com include:mailgun.org include:sparkpostmail.com " "include:_spf_cd.spamtitan.com -all"
  • it8ja3hmscs86ub2p204f6va2t
  • mmdmqlbf8udadqgepmjl30pc06
  • ted9hq4s6i3u55ivknhr09oa57
  • 3pptmmltn5n5dkfvagh98845cv
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