sim.spk-berlin.de

Valid Email Server
Domain Lookup › sim.spk-berlin.de

Domain Overview

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

Checked via [email protected] · 2026-03-28 02:50:23 UTC · ↺ Refresh

MX Hostnames

  • b2741.mx.srv.dfn.de
  • c2741.mx.srv.dfn.de
  • a2741.mx.srv.dfn.de

MX Priorities

  • b2741.mx.srv.dfn.de: 10
  • c2741.mx.srv.dfn.de: 10
  • a2741.mx.srv.dfn.de: 10

A / AAAA Records

  • 194.94.132.172 (no PTR)

Mail Server IPs

  • 194.95.235.49 ↩ b2741.mx.srv.dfn.de
  • 194.95.239.49 ↩ c2741.mx.srv.dfn.de
  • 194.95.233.49 ↩ a2741.mx.srv.dfn.de

SOA Record

Raw SOA ns.staatsbibliothek-berlin.de ns-admin.sbb.spk-berlin.de 2026032301 28800 7200 604800 172800
Primary NS (mname)
ns.staatsbibliothek-berlin.de
Admin Email (rname)
ns-admin@sbb.spk-berlin.de
Serial
2026032301
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
172800s

Nameservers (NS)

ns1.staatsbibliothek-berlin.de
deneb.dfn.de
dns-2.dfn.de
ns.staatsbibliothek-berlin.de

SPF Record

✓ Strict (-all)
v=spf1 ip4:194.94.133.228 ip4:194.94.132.106 ip4:156.67.234.93 ip4:185.15.192.41 ip4:185.233.54.201 ip4:193.174.240.41 include:agenturserver.de -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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

3 records
  • cisco-ci-domain-verification=24db35c52f6f87986ab1dd1feae2384aca5a1e91a2b6c6eac45644449b2255d4
  • SPFv=spf1 ip4:194.94.133.228 ip4:194.94.132.106 ip4:156.67.234.93 ip4:185.15.192.41 ip4:185.233.54.201 ip4:193.174.240.41 include:agenturserver.de -all
  • MS=ms43963828
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 sim.spk-berlin.de

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

No credit card required
Get 1,000 Free Credits