matthewcox.com

Valid Email Server
Domain Lookup › matthewcox.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
matthewcox.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-02 11:00:42 UTC · ↺ Refresh

MX Hostnames

  • aspmx3.googlemail.com
  • aspmx2.googlemail.com
  • alt2.aspmx.l.google.com
  • alt1.aspmx.l.google.com
  • aspmx.l.google.com

MX Priorities

  • alt1.aspmx.l.google.com: 50
  • aspmx2.googlemail.com: 100
  • aspmx.l.google.com: 10
  • alt2.aspmx.l.google.com: 50
  • aspmx3.googlemail.com: 100

A / AAAA Records

  • 51.140.8.150 (no PTR)

Mail Server IPs

  • 108.177.123.27 ↩ lcscld-in-f27.1e100.net
  • 2800:3f0:4003:c0f::1b (no PTR)
  • 142.250.31.26 ↩ bj-in-f26.1e100.net
  • 2607:f8b0:4004:c1d::1a ↩ ww-in-f26.1e100.net
  • 172.253.116.26 ↩ dj-in-f26.1e100.net
  • 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
  • 172.253.116.27 ↩ dj-in-f27.1e100.net
  • 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net

SOA Record

Raw SOA ns4.monikerdns.net dnsadmin.moniker.com 2025111800 43200 900 1209600 3600
Primary NS (mname)
ns4.monikerdns.net
Admin Email (rname)
dnsadmin@moniker.com
Serial
2025111800
Refresh
43200s
Retry
900s
Expire
1209600s
Minimum TTL
3600s

Nameservers (NS)

ns1.monikerdns.net
ns3.monikerdns.net
ns4.monikerdns.net
ns2.monikerdns.net

SPF Record

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

DMARC Record

✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

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=S78CMmqPl85EOdtN6y5gS8xZOff9IkbD6_vtr1DQa1o
  • pinterest-site-verification=378c1931432f193bdfc547a4d39167b3
  • SPFv=spf1 include:_spf.google.com -all
  • google-site-verification=JI6RFUDZ3HBqjw9ydEPlD4nBYsFYseXgo2cojLfwI4E
Free · No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for matthewcox.com

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits