Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
frederick-leboyer-stiftung.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 08:37:29 UTC · ↺ Refresh
MX Hostnames
- frederick-leboyer-stiftung.de
MX Priorities
- frederick-leboyer-stiftung.de: 10
A / AAAA Records
- 62.116.187.177 ↩ server10.ruesenberg.de
- 2001:4178:6:1417:62:116:187:177 ↩ server10.ruesenberg.de
Mail Server IPs
- 62.116.187.177 ↩ server10.ruesenberg.de
- 2001:4178:6:1417:62:116:187:177 ↩ server10.ruesenberg.de
SOA Record
Raw SOA
ns15.domserver.de do-not-reply.frederick-leboyer-stiftung.de 2023090400 43200 7200 1209600 86400
Primary NS (mname)
ns15.domserver.de
Admin Email (rname)
do-not-reply@frederick-leboyer-stiftung.de
Serial
2023090400
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns17.domserver.de
ns18.domserver.de
ns15.domserver.de
ns16.domserver.de
SPF Record
✓ Strict (-all)
v=spf1 mx a a:server10.ruesenberg.de ip4:62.116.187.177 -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict 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
2 records- SPFv=spf1 mx a a:server10.ruesenberg.de ip4:62.116.187.177 -all
- google-site-verification=buVdj8jM9vVceOsulHWuEOaaHMwzmImthVGtv3QWLA0
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 frederick-leboyer-stiftung.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits