firstcompanies.com

Valid Email Server
Domain Lookup › firstcompanies.com

Domain Overview

DNS: ✓ 16h ago Checker: ✓ 16h ago
firstcompanies.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-07-02 02:46:09 UTC · ↺ Refresh

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MX Hostnames

  • firstcompanies-com.mail.protection.outlook.com

MX Priorities

  • firstcompanies-com.mail.protection.outlook.com: 10

A / AAAA Records

  • 173.199.90.184 ↩ 173.199.90.184.vultrusercontent.com

Mail Server IPs

  • 52.101.11.13 ↩ mail-sn1pr0501cu00205.inbound.protection.outlook.com
  • 52.101.41.24 ↩ mail-sj0pr03cu01600.inbound.protection.outlook.com
  • 52.101.194.0 ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
  • 52.101.11.2 ↩ mail-sn1pr03cu00102.inbound.protection.outlook.com
  • 2a01:111:f403:f90a:: ↩ mail-bn6pr02cu00300.inbound.protection.outlook.com
  • 2a01:111:f403:c936:: ↩ mail-cy1pr05cu00400.inbound.protection.outlook.com
  • 2a01:111:f403:c902:: ↩ mail-sj2pr05cu00300.inbound.protection.outlook.com
  • 2a01:111:f403:c92c::1 ↩ mail-dm6pr03cu00401.inbound.protection.outlook.com

SOA Record

Raw SOA ns73.worldnic.com namehost.worldnic.com 126063010 10800 3600 604800 3600
Primary NS (mname)
ns73.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126063010
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns74.worldnic.com
ns73.worldnic.com

SPF Record

✓ Strict (-all)
v=spf1 a ip4:64.85.147.190 include:spf.protection.outlook.com include:relay.bswift.com include:spfa.cpmails.com exists:%{i}._spf.inkyphishfence.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; adkim=s; aspf=s; fo=1; ri=86400; ruf=mailto:[email protected]; rua=mailto:[email protected],mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict · DKIM alignment: Strict
📧 Reports → mailto:[email protected],mailto:[email protected]

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

3 records
  • SPFv=spf1 a ip4:64.85.147.190 include:spf.protection.outlook.com include:relay.bswift.com include:spfa.cpmails.com exists:%{i}._spf.inkyphishfence.com -all
  • google-site-verification=HAhClU-_dR8lH_YS1h7f__mpvh0wAuFBVZ1uxsIzvF0
  • MS=ms44111637
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