Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
isz-elektro.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 07:55:58 UTC · ↺ Refresh
MX Hostnames
- mx02.dextermedia.net
MX Priorities
- mx02.dextermedia.net: 10
A / AAAA Records
- 87.106.250.247 ↩ clients.dextermedia.net
Mail Server IPs
- 212.227.204.251 ↩ mx02.dextermedia.net
SOA Record
Raw SOA
a.ns14.net do-not-reply.isz-elektro.de 2023070100 43200 7200 1209600 180
Primary NS (mname)
a.ns14.net
Admin Email (rname)
do-not-reply@isz-elektro.de
Serial
2023070100
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
180s
Nameservers (NS)
b.ns14.net
c.ns14.net
d.ns14.net
a.ns14.net
SPF Record
✗ MissingNo SPF record — domain is unprotected against spoofing.
⚠ No SPF record found. Email servers cannot verify authorized senders.
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
No TXT records found.
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 isz-elektro.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits