ingenieurbuero-haehnel.de

Valid Email Server
Domain Lookup › ingenieurbuero-haehnel.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
ingenieurbuero-haehnel.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-04 00:07:40 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

  • ingenieurbuerohaehnel-de03e.mail.protection.outlook.com

MX Priorities

  • ingenieurbuerohaehnel-de03e.mail.protection.outlook.com: 0

A / AAAA Records

  • 217.18.191.112 (no PTR)

Mail Server IPs

  • 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
  • 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
  • 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
  • 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
  • 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com

SOA Record

Raw SOA ns0.isd-internet.de domain.isd-internet.de 2025082501 28800 3600 604800 3600
Primary NS (mname)
ns0.isd-internet.de
Admin Email (rname)
domain@isd-internet.de
Serial
2025082501
Refresh
28800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns20.isd-internet.de
ns0.isd-internet.de

SPF Record

✓ Strict (-all)
v=spf1 a mx ip4:81.20.90.82 ip4:81.20.94.212 ip4:217.18.190.4 ip4:217.18.190.5 ip4:217.18.191.31 ip4:217.18.191.36 include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict 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

2 records
  • SPFv=spf1 a mx ip4:81.20.90.82 ip4:81.20.94.212 ip4:217.18.190.4 ip4:217.18.190.5 ip4:217.18.191.31 ip4:217.18.191.36 include:spf.protection.outlook.com -all
  • MS=ms30742982
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 · Customize →
See demo & docs
Deep verification
Full email verification for ingenieurbuero-haehnel.de

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

No credit card required
Get 1,000 Free Credits