Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
bonn-netz.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 22:05:30 UTC · ↺ Refresh
MX Hostnames
- mail2.stadtwerke-bonn.de
- mail4.stadtwerke-bonn.de
MX Priorities
- mail4.stadtwerke-bonn.de: 10
- mail2.stadtwerke-bonn.de: 10
A / AAAA Records
- 82.98.127.16 (no PTR)
Mail Server IPs
- 91.220.185.16 ↩ mail4.stadtwerke-bonn.de
- 91.220.185.17 ↩ mail2.stadtwerke-bonn.de
SOA Record
Raw SOA
dns11.netcologne.de hostmaster.netcologne.de 2026030303 28800 7200 604800 3600
Primary NS (mname)
dns11.netcologne.de
Admin Email (rname)
hostmaster@netcologne.de
Serial
2026030303
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
dns12.netcologne.de
dns11.netcologne.de
dns14.netcologne.de
dns13.netcologne.de
SPF Record
✓ Strict (-all)
v=spf1 mx include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; pct=100; adkim=s; aspf=s
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
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=02VRriSmTkGDIJ9j
- SPFv=spf1 mx include:spf.protection.outlook.com -all
- MS=ms23716974
- QuoVadis=204a53fd-8efb-413f-bd43-b639bf9c227e
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