c-combinator.com

Valid Email Server
Domain Lookup › c-combinator.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
c-combinator.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-31 05:01:56 UTC · ↺ Refresh

MX Hostnames

  • ccombinator-com0c.mail.protection.outlook.com

MX Priorities

  • ccombinator-com0c.mail.protection.outlook.com: 0

A / AAAA Records

  • 98.84.224.111 ↩ ec2-98-84-224-111.compute-1.amazonaws.com
  • 18.208.88.157 ↩ ec2-18-208-88-157.compute-1.amazonaws.com

Mail Server IPs

  • 40.93.192.1 ↩ mail-dm5pr02cu00201.inbound.protection.outlook.com
  • 52.101.9.24 ↩ mail-bl2pr02cu00400.inbound.protection.outlook.com
  • 52.101.194.19 ↩ mail-ch5pr02cu00303.inbound.protection.outlook.com
  • 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
  • 2a01:111:f403:c92c::1 ↩ mail-dm6pr03cu00401.inbound.protection.outlook.com
  • 2a01:111:f403:f804::3 ↩ mail-co1pr03cu00403.inbound.protection.outlook.com
  • 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:f910:: ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com

SOA Record

Raw SOA dns1.p01.nsone.net domains+netlify.netlify.com 1659861647 43200 7200 1209600 3600
Primary NS (mname)
dns1.p01.nsone.net
Admin Email (rname)
domains+netlify@netlify.com
Serial
1659861647
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
3600s

Nameservers (NS)

dns4.p01.nsone.net
dns2.p01.nsone.net
dns1.p01.nsone.net
dns3.p01.nsone.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

2 records
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • MS=ms37721516
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