cu3o.mx

Valid Email Server
Domain Lookup › cu3o.mx

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
cu3o.mx
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-04-02 23:55:56 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

  • alt2.aspmx.l.google.com: 5
  • aspmx.l.google.com: 1
  • alt1.aspmx.l.google.com: 5
  • aspmx2.googlemail.com: 10

A / AAAA Records

  • 74.208.236.14 ↩ 74-208-236-14.elastic-ssl.ui-r.com

Mail Server IPs

  • 172.253.116.27 ↩ dj-in-f27.1e100.net
  • 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
  • 172.253.139.26 ↩ yuiadsk-in-f26.1e100.net
  • 2607:f8b0:4004:c06::1a ↩ bg-in-f26.1e100.net
  • 108.177.123.27 ↩ lcscld-in-f27.1e100.net
  • 2800:3f0:4003:c0f::1b (no PTR)
  • 108.177.123.26 ↩ lcscld-in-f26.1e100.net
  • 2800:3f0:4003:c0f::1a (no PTR)

SOA Record

Raw SOA ns-mx.1and1-dns.mx hostmaster.1and1.com 2016081905 28800 7200 604800 300
Primary NS (mname)
ns-mx.1and1-dns.mx
Admin Email (rname)
hostmaster@1and1.com
Serial
2016081905
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns-mx.1and1-dns.org
ns-mx.1and1-dns.com
ns-mx.1and1-dns.mx
ns-mx.1and1-dns.biz

SPF Record

✗ Missing

No SPF record — domain is unprotected against spoofing.

⚠ No SPF record found. Email servers cannot verify authorized senders.

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

No TXT records found.

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