dieblb.de

Valid Email Server
Domain Lookup › dieblb.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
dieblb.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-31 10:00:47 UTC · ↺ Refresh

MX Hostnames

  • dieblb-de.mail.protection.outlook.com

MX Priorities

  • dieblb-de.mail.protection.outlook.com: 20

A / AAAA Records

  • 172.67.152.245 (no PTR)
  • 104.21.64.167 (no PTR)
  • 2606:4700:3037::ac43:98f5
  • 2606:4700:3032::6815:40a7

Mail Server IPs

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

SOA Record

Raw SOA nina.ns.cloudflare.com dns.cloudflare.com 2398669701 10000 2400 604800 1800
Primary NS (mname)
nina.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398669701
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

nina.ns.cloudflare.com
peyton.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 1 found
mail._domainkey
✓ Public key: 40 chars (valid)
⚠ Public key too short (40 chars) — DKIM may be invalid.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

3 records
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • MS=ms17071119
  • brevo-code:3f8cd439500b62d5fcd5228196d41c5e
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 dieblb.de

SMTP handshake, catch-all detection, SPF/DKIM/DMARC analysis, and Yahoo/Outlook verification.

Get 1,000 Free Credits