Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
hgg-online.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 18:18:10 UTC · ↺ Refresh
MX Hostnames
- lupfen.ctl.de
MX Priorities
- lupfen.ctl.de: 10
A / AAAA Records
- 178.13.87.177 ↩ business-178-013-087-177.static.arcor-ip.net
Mail Server IPs
- 217.7.63.47 ↩ lupfen.ctl.de
SOA Record
Raw SOA
ns2.ctl.de hostmaster.ctl.de 2026030901 10800 3600 604800 86400
Primary NS (mname)
ns2.ctl.de
Admin Email (rname)
hostmaster@ctl.de
Serial
2026030901
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
c.ns14.net
ns2.ctl.de
d.ns14.net
b.ns14.net
SPF Record
✓ Strict (-all)
v=spf1 a mx a:hgg-markgroeningen.de -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=reject; rua=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
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
4 records- apple-domain-verification=4y7wLQF1p3L6DJNw
- SPFv=spf1 a mx a:hgg-markgroeningen.de -all
- MS=ms88550147
- Hans-Grueninger-Gymnasium, Schwieberdinger Str. 12, 71706 Markgroeningen
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