21re.de

Valid Email Server
Domain Lookup › 21re.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
21re.de
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-19 12:28:32 UTC · ↺ Refresh

MX Hostnames

  • aspmx.l.google.com

MX Priorities

  • aspmx.l.google.com: 1

A / AAAA Records

  • 99.84.234.19 ↩ server-99-84-234-19.jfk50.r.cloudfront.net
  • 99.84.234.124 ↩ server-99-84-234-124.jfk50.r.cloudfront.net
  • 99.84.234.49 ↩ server-99-84-234-49.jfk50.r.cloudfront.net
  • 99.84.234.88 ↩ server-99-84-234-88.jfk50.r.cloudfront.net

Mail Server IPs

  • 142.251.163.26 ↩ wv-in-f26.1e100.net
  • 2607:f8b0:4004:c09::1b ↩ bh-in-f27.1e100.net

SOA Record

Raw SOA ns-1350.awsdns-40.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1350.awsdns-40.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-785.awsdns-34.net
ns-1350.awsdns-40.org
ns-2006.awsdns-58.co.uk
ns-424.awsdns-53.com

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

2 records
  • sophos-domain-verification=51a3c792430b5a5207ccce78594de68bcd7621c1bc342d3bd254c84d0cb06c28
  • apple-domain-verification=d6VZNdvnj1G3GBAC
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