| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 87.56.132.243 | 43200s | — | AS3292 | TDC Holding A/S | 87.56.128.0/17 | 🇩🇰 Denmark | Nørresundby |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026081401 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Scanned At | Duration | Records | DNSSEC | |
|---|---|---|---|---|
| 2026-08-14 17:14:32 | 8520ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-16 09:08:41 | 852ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-30 19:21:03 | 733ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-24 05:05:44 | 927ms | 0 NS 0 A 0 MX | ❓ Unknown | View |
| 2026-06-20 20:27:42 | 700ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-17 12:40:28 | 256ms | 0 NS 0 A 0 MX | ❓ Unknown | View |