Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
gm.fh-koeln.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-27 06:02:55 UTC · ↺ Refresh
MX Hostnames
- advm2.gm.fh-koeln.de
MX Priorities
- advm2.gm.fh-koeln.de: 10
A / AAAA Records
- 139.6.57.147 ↩ advvs19.gm.FH-Koeln.DE
- 139.6.57.18 ↩ advs7.gm.FH-Koeln.DE
Mail Server IPs
- 139.6.57.8 ↩ advm2.gm.FH-Koeln.DE
SOA Record
No SOA record found.
Nameservers (NS)
No nameservers found.
SPF Record
✓ Soft Fail (~all)
v=spf1 +mx +ip4:139.6.1.47 +ip4:139.6.1.48 +ip4:139.6.1.49 +ip4:139.6.1.50 ?ip4:139.6.0.0/16 ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo 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
1 record- SPFv=spf1 +mx +ip4:139.6.1.47 +ip4:139.6.1.48 +ip4:139.6.1.49 +ip4:139.6.1.50 ?ip4:139.6.0.0/16 ~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 gm.fh-koeln.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits