centron.de

Valid Email Server
Domain Lookup › centron.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
centron.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-28 21:59:24 UTC · ↺ Refresh

MX Hostnames

  • mxbackup1.internet1.de
  • mail.centron.de

MX Priorities

  • mxbackup1.internet1.de: 20
  • mail.centron.de: 5

A / AAAA Records

  • 185.64.112.191 (no PTR)
  • 2a00:6140:a000:113::13 (no PTR)

Mail Server IPs

  • 188.64.58.185 ↩ mxbackup1.internet1.de
  • 158.181.50.38 ↩ ctrmail-bbg-2.internet1.de
  • 2a00:6140:117:358::1 ↩ ctrmail-bbg-2.internet1.de

SOA Record

Raw SOA ns.internet1.de hostmaster.centron.de 2026022300 3600 600 1209600 1800
Primary NS (mname)
ns.internet1.de
Admin Email (rname)
hostmaster@centron.de
Serial
2026022300
Refresh
3600s
Retry
600s
Expire
1209600s
Minimum TTL
1800s

Nameservers (NS)

ns2.internet1.de
ns.internet1.de
ns3.internet1.de

SPF Record

✓ Strict (-all)
v=spf1 ip4:158.181.50.198 ip6:2a00:6140:117:50::1 ip4:62.146.12.3 ip6:2a01:138:a03e:4::1 ip4:158.181.50.38 ip6:2a00:6140:117:358::1 a:000.de-mx.crsend.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; ruf=mailto:[email protected]; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Strict · DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
↳ 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
  • MS=0C11700207087C1A0DB573761896A18B391E363CCopy
  • SPFv=spf1 ip4:158.181.50.198 ip6:2a00:6140:117:50::1 ip4:62.146.12.3 ip6:2a01:138:a03e:4::1 ip4:158.181.50.38 ip6:2a00:6140:117:358::1 a:000.de-mx.crsend.com -all
  • logmein-verification-code=c8fb0940-5906-4a2c-be43-885065d7d90d
  • stripe-verification=a3924d0112573628dbc0e6d0086529ce517e2c121d1a6fd73768ad53ff5b524f
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