Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
dr-frank.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 21:25:41 UTC · ↺ Refresh
MX Hostnames
- mx-primary.insec.gmbh
MX Priorities
- mx-primary.insec.gmbh: 10
A / AAAA Records
- 212.24.125.41 ↩ prod9.insec.gmbh
Mail Server IPs
- 212.24.125.36 ↩ prod25.insec.gmbh
SOA Record
Raw SOA
resolver4.insec.gmbh zonemaster.nszone.de 2018021212 28800 7200 2419200 10800
Primary NS (mname)
resolver4.insec.gmbh
Admin Email (rname)
zonemaster@nszone.de
Serial
2018021212
Refresh
28800s
Retry
7200s
Expire
2419200s
Minimum TTL
10800s
Nameservers (NS)
resolver4.insec.gmbh
resolver3.insec.gmbh
SPF Record
✓ Strict (-all)
v=spf1 include:spf.insec.gmbh -all
📊 DNS lookups: 1/10
✓ 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
1 record- SPFv=spf1 include:spf.insec.gmbh -all
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