| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 81.7.138.54 | 3598s | — | AS47292 | Sentia Denmark A/S | 81.7.136.0/22 | 🇩🇰 Denmark | Copenhagen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mail.d4.dk | 81.7.138.35 | mail.d4.dk | AS47292 Sentia Denmark A/S |
| TXT Record |
|---|
| v=spf1 mx -all |
| Policy | Record (qdok.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx -all |
| 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 | 2018111328 |
| Primary NS (MNAME) | ns.d4es.dk |
| Responsible (RNAME) | hostmaster@d4.dk |
| Refresh | 1200s |
| Retry | 600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Scanned At | Duration | Records | DNSSEC | |
|---|---|---|---|---|
| 2026-07-21 05:27:56 | 13868ms | 3 NS 1 A 1 MX | 🔓 Insecure | View |
| 2026-06-26 10:48:37 | 2849ms | 3 NS 1 A 1 MX | 🔓 Insecure | View |
| 2026-06-25 04:18:13 | 5571ms | 3 NS 1 A 1 MX | 🔓 Insecure | View |
| 2026-06-22 21:01:05 | 1083ms | 0 NS 0 A 0 MX | ❓ Unknown | View |
| 2026-06-17 23:43:09 | 3686ms | 3 NS 1 A 1 MX | 🔓 Insecure | View |