| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 89.188.76.144 | 3600s | mail.supermatematik.dk | AS48854 | team.blue Denmark A/S | 89.188.72.0/21 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mail.supermatematik.dk | 89.188.76.144 | mail.supermatematik.dk | AS48854 team.blue Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 89.188.76.144 |
| 🔶 Autoconfig | 89.188.76.144 |
| TXT Record |
|---|
| v=spf1 a mx -all |
| Policy | Record (supermatematik.dk) |
|---|---|
| -all (hard fail) | v=spf1 a mx -all |
| Policy | Record (_dmarc.supermatematik.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none |
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.supermatematik.dk | qdNUDLuftGAzZc5PffKyDpnSI9uvwlke9YYwi-WsiWM |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026060304 |
| Primary NS (MNAME) | ns.dandomain.dk |
| Responsible (RNAME) | hostmaster@dandomain.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |