kosscg.com

Valid Email Server
Domain Lookup › kosscg.com

Domain Overview

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

Checked via [email protected] · 2026-03-19 07:13:36 UTC · ↺ Refresh

MX Hostnames

  • kosscg-com.mail.protection.outlook.com

MX Priorities

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

A / AAAA Records

  • 52.5.206.218 ↩ ec2-52-5-206-218.compute-1.amazonaws.com
  • 3.220.225.62 ↩ ec2-3-220-225-62.compute-1.amazonaws.com
  • 3.225.142.148

Mail Server IPs

  • 52.101.194.17 ↩ mail-ch5pr02cu00401.inbound.protection.outlook.com
  • 52.101.194.3 ↩ mail-ch1pr04cu00103.inbound.protection.outlook.com
  • 52.101.8.46 ↩ mail-dm6pr05cu00406.inbound.protection.outlook.com
  • 52.101.40.0 ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
  • 2a01:111:f403:c902::3 ↩ mail-sj0pr03cu01703.inbound.protection.outlook.com
  • 2a01:111:f403:f802::1 ↩ mail-sj2pr05cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:c946::5 ↩ mail-ch4pr21cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:c803:: ↩ mail-bn1pr21cu00200.inbound.protection.outlook.com

SOA Record

Raw SOA ns-1300.awsdns-34.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1300.awsdns-34.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-1635.awsdns-12.co.uk
ns-354.awsdns-44.com
ns-536.awsdns-03.net
ns-1300.awsdns-34.org

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

3 records
  • mscid=tULx+VWgFHU2Mtlj9iWUqVJruyxmD58mKTMgTqYvVCWJID9ffhIFAHplGfLnOzYWRabgpZw7LcwMn6+OV7ev9Q==
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • MS=ms86426787
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