12-05.de

Valid Email Server
Domain Lookup › 12-05.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
12-05.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-01 14:09:51 UTC · ↺ Refresh

MX Hostnames

  • 1205-de0e.mail.protection.outlook.com

MX Priorities

  • 1205-de0e.mail.protection.outlook.com: 10

A / AAAA Records

  • 76.76.21.21 (no PTR)

Mail Server IPs

  • 52.101.73.19 ↩ mail-as8pr04cu00803.inbound.protection.outlook.com
  • 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
  • 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
  • 52.101.73.6 ↩ mail-am6pr04cu00306.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::8 ↩ mail-db5pr02cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com

SOA Record

Raw SOA ns1123.ui-dns.biz hostmaster.1und1.de 2017073236 28800 7200 604800 300
Primary NS (mname)
ns1123.ui-dns.biz
Admin Email (rname)
hostmaster@1und1.de
Serial
2017073236
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns1123.ui-dns.org
ns1123.ui-dns.biz
ns1123.ui-dns.com
ns1123.ui-dns.de

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.perfora.net include:_spf.kundenserver.de include:spf.protection.outlook.com include:26199021.spf07.hubspotemail.net ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

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
  • v=verifydomain MS=8374214
  • google-site-verification=865eFvbzrBfa8Pxwx62eduUhVaX-z9pf7JOGGLVJeJc
  • SPFv=spf1 include:_spf.perfora.net include:_spf.kundenserver.de include:spf.protection.outlook.com include:26199021.spf07.hubspotemail.net ~all
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 12-05.de

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

No credit card required
Get 1,000 Free Credits