cat5security.com

Valid Email Server
Domain Lookup › cat5security.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
cat5security.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-20 11:03:35 UTC · ↺ Refresh

MX Hostnames

  • cat5security-com.mail.protection.outlook.com

MX Priorities

  • cat5security-com.mail.protection.outlook.com: 0

A / AAAA Records

  • 34.174.143.107 ↩ 107.143.174.34.bc.googleusercontent.com

Mail Server IPs

  • 52.101.41.24 ↩ mail-sj0pr03cu01600.inbound.protection.outlook.com
  • 52.101.50.4 ↩ mail-co1pr03cu00404.inbound.protection.outlook.com
  • 52.101.194.13 ↩ mail-ch0pr04cu00605.inbound.protection.outlook.com
  • 52.101.9.20 ↩ mail-bl0pr02cu00604.inbound.protection.outlook.com
  • 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:c946::5 ↩ mail-ch4pr21cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:c946::6 ↩ mail-ch5pr02cu00406.inbound.protection.outlook.com
  • 2a01:111:f403:c902:: ↩ mail-sj2pr05cu00300.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.siteground.net admins.siteground.com 91 10800 3600 1209600 3600
Primary NS (mname)
ns1.siteground.net
Admin Email (rname)
admins@siteground.com
Serial
91
Refresh
10800s
Retry
3600s
Expire
1209600s
Minimum TTL
3600s

Nameservers (NS)

ns1.siteground.net
ns2.siteground.net

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

1 record
  • SPFv=spf1 include:spf.protection.outlook.com -all
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