kisd.de

Valid Email Server
Domain Lookup › kisd.de

Domain Overview

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

Checked via [email protected] · 2026-04-02 19:43:42 UTC · ↺ Refresh

MX Hostnames

  • smtp.intranet.FH-Koeln.de

MX Priorities

  • smtp.intranet.fh-koeln.de: 10

A / AAAA Records

  • 139.6.141.9 ↩ virtual.ds.FH-Koeln.DE

Mail Server IPs

  • 139.6.1.61 ↩ lvs2.nz.FH-Koeln.DE

SOA Record

Raw SOA ns-iwz.nz.fh-koeln.de dns.fh-koeln.de 2026030901 10800 1800 604800 86400
Primary NS (mname)
ns-iwz.nz.fh-koeln.de
Admin Email (rname)
dns@fh-koeln.de
Serial
2026030901
Refresh
10800s
Retry
1800s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

ns-gwz.nz.fh-koeln.de
dns-1.dfn.de
dns1.uni-koeln.de
ns-iwz.nz.fh-koeln.de

SPF Record

✓ Strict (-all)
v=spf1 +mx +ip4:139.6.141.4 +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
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1;p=none;rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 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
  • HARICA-CgUsFIadnKhnZwWMwrb
  • SPFv=spf1 +mx +ip4:139.6.141.4 +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
  • google-site-verification=EOMfM8njL7yPUuKN0Gx_kwy-7dYitZAGLW4u18wmNY8
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 kisd.de

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

No credit card required
Get 1,000 Free Credits