Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kzvnr.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 08:48:01 UTC · ↺ Refresh
MX Hostnames
- mailgw.kzvnr.de
MX Priorities
- mailgw.kzvnr.de: 30
A / AAAA Records
- 144.76.143.241 ↩ k28p48.meinserver.io
Mail Server IPs
- 91.240.160.25 ↩ mailgw.kzvnr.de
SOA Record
Raw SOA
ns03.kzvnr.de root.ns03.kzvnr.de 2026031601 10800 3600 604800 86400
Primary NS (mname)
ns03.kzvnr.de
Admin Email (rname)
root@ns03.kzvnr.de
Serial
2026031601
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
secondary006.dtag.net
pns.dtag.de
SPF Record
✓ Strict (-all)
v=spf1 mx include:agenturserver.de a:www.kzvnr.de -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- SPFv=spf1 mx include:agenturserver.de a:www.kzvnr.de -all
- QuoVadis=40b32d33-2948-4895-9d89-04d71e61a9b5
- atlassian-domain-verification=vG7Swuv7i9d9weFD/chPIHgChezXucZrkEtT4dEQDSWgHssjZbbosXE0JTeaRsd8
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 kzvnr.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits