mc-21.com

Valid Email Server
Domain Lookup › mc-21.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
mc-21.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-01 08:14:29 UTC · ↺ Refresh

MX Hostnames

  • alt4.aspmx.l.google.com
  • alt3.aspmx.l.google.com
  • aspmx.l.google.com
  • alt1.aspmx.l.google.com

MX Priorities

  • alt1.aspmx.l.google.com: 5
  • aspmx.l.google.com: 1
  • alt3.aspmx.l.google.com: 10
  • alt4.aspmx.l.google.com: 10

A / AAAA Records

  • 23.111.141.202 ↩ oxygen.redexpertos.com
  • 208.91.197.27 (no PTR)

Mail Server IPs

  • 108.177.123.27 ↩ lcscld-in-f27.1e100.net
  • 2800:3f0:4003:c0f::1b (no PTR)
  • 172.253.62.27 ↩ bc-in-f27.1e100.net
  • 2607:f8b0:4004:c1f::1a ↩ pd-in-f26.1e100.net
  • 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
  • 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
  • 173.194.76.26 ↩ ws-in-f26.1e100.net
  • 2a00:1450:400c:c00::1b ↩ ws-in-f27.1e100.net

SOA Record

Raw SOA ns79.worldnic.com namehost.worldnic.com 126032516 10800 3600 604800 3600
Primary NS (mname)
ns79.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126032516
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns79.worldnic.com
ns80.worldnic.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.zixsmbhosted.com include:mc-21-com.spf.smtp25.com include:online-send.com include:_spf.google.com include:spf.edgepilot.com ip4:196.28.62.138/32 ip4:196.12.188.198/32 ip4:196.28.62.132/32 ip4:196.12.188.202/32 ip4:174.37.170.192 ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate 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

7 records
  • _ixkq95g7y3feuuktec16v9l034xq1l1
  • google-site-verification=dChU890vtYNAeRP_ykG1PdFP0yEOfYA-ARDC2VXY4lQ
  • _n41d8fuc5v65efaq9bjtdy1dhw85rj0
  • fw8gdh119wv4spmdn65fybj45y60nmhb
  • SPFv=spf1 include:spf.zixsmbhosted.com include:mc-21-com.spf.smtp25.com include:online-send.com include:_spf.google.com include:spf.edgepilot.com ip4:196.28.62.138/32 ip4:196.12.188.198/32 ip4:196.28.62.132/32 ip4:196.12.188.202/32 ip4:174.37.170.192 ~all
  • _ljvy3bp64tu33xsn6anzpkakeqfyewt
  • _vlm5xwh894x56lyrfxhxuwyvhs01pna
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