comcast.net

Valid Email Server
Domain Lookup › comcast.net

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
comcast.net
Yes
✓ Yes
Unknown
No
Yes
⚠ Yes
No
No

Checked via [email protected] · 2026-03-17 19:29:39 UTC · ↺ Refresh

MX Hostnames

  • mx1c1.comcast.net
  • mx1a1.comcast.net
  • mx2c1.comcast.net
  • mx2a1.comcast.net
  • mx2h1.comcast.net
  • mx1h1.comcast.net
  • mx2.mxge.comcast.net
  • mx1.mxge.comcast.net

MX Priorities

  • mx1c1.comcast.net: 50
  • mx1.mxge.comcast.net: 5
  • mx2c1.comcast.net: 50
  • mx1h1.comcast.net: 50
  • mx2h1.comcast.net: 50
  • mx1a1.comcast.net: 50
  • mx2.mxge.comcast.net: 5
  • mx2a1.comcast.net: 50

A / AAAA Records

  • 96.99.227.0 ↩ dns-upper-redirect.xfinity.com

Mail Server IPs

  • 96.102.18.147 (no PTR)
  • 96.102.18.146 (no PTR)
  • 96.102.157.181 (no PTR)
  • 96.102.157.180 (no PTR)

SOA Record

Raw SOA dns101.comcast.net domregtech.comcastonline.com 2008258772 7200 3600 1209600 900
Primary NS (mname)
dns101.comcast.net
Admin Email (rname)
domregtech@comcastonline.com
Serial
2008258772
Refresh
7200s
Retry
3600s
Expire
1209600s
Minimum TTL
900s

Nameservers (NS)

dns101.comcast.net
dns103.comcast.net
dns104.comcast.net
dns105.comcast.net
dns102.comcast.net

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:96.103.146.48/28 ip4:96.102.19.32/28 ip4:96.102.200.0/28 include:_spfv6.comcast.net include:_spf.mdp.comcast.net include:_ipspf.yahoo.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✓ Reject
v=DMARC1;p=reject;sp=reject;rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject

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

4 records
  • google-site-verification=gxiEHT6grgMJE52lhl4OYIt5Q3XpA5qt-8Okrxq-mcE
  • yahoo-verification-key=t0ftaXXV8MB1pon3jzauB3Fz5ezusB2l9jy3GVNPQRw=
  • SPFv=spf1 ip4:96.103.146.48/28 ip4:96.102.19.32/28 ip4:96.102.200.0/28 include:_spfv6.comcast.net include:_spf.mdp.comcast.net include:_ipspf.yahoo.com ~all
  • google-site-verification=g7KA0NF2z-1XIBz7vWW88zvVYlJeiG56UPOYHF2tqY0
Full email verification for comcast.net

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