| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns51.gullestrupnet.dk | 82.165.189.144 | gn51.gullestrupnet.dk | AS8560 IONOS SE |
| ns52.gullestrupnet.dk | 82.165.203.134 | mail51.gullestrupnet.dk | AS8560 IONOS SE |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 82.165.189.144 | 14400s | gn51.gullestrupnet.dk | AS8560 | IONOS SE | 82.165.0.0/16 | 🇩🇪 Germany | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 14400s | mail.becher-online.dk | 82.165.203.134 | mail51.gullestrupnet.dk | AS8560 IONOS SE |
| 30 | 14400s | backupmail.gullestrupnet.dk | 82.165.203.134 | mail51.gullestrupnet.dk | AS8560 IONOS SE |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 82.165.189.144 |
| 🔶 Autoconfig | 82.165.189.144 |
| TXT Record |
|---|
| v=spf1 ip4:82.165.203.134 ip4:82.165.189.144 +a +mx -all |
| Policy | Record (becher-online.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:82.165.203.134 ip4:82.165.189.144 +a +mx -all |
| Policy | Record (_dmarc.becher-online.dk) |
|---|---|
| p=reject | v=DMARC1;p=reject;pct=100;rua=mailto:jan@becher-online.dk |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2025122701 |
| Primary NS (MNAME) | ns51.gullestrupnet.dk |
| Responsible (RNAME) | hostmaster@gullestrupnet.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 10800s |