| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 87.57.158.183 | 900s | 87-57-158-183-static.dk.customer.tdc.net | AS3292 | TDC Holding A/S | 87.57.0.0/16 | 🇩🇰 Denmark | Aarhus |
| 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 | 2026081001 |
| 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 | |
|---|---|---|---|---|
| 2026-08-13 23:10:07 | 626ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-18 07:44:01 | 1788ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-13 00:44:53 | 635ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-03 13:06:11 | 1902ms | 2 NS 0 A 0 MX | ⚠️ Bogus | View |
| 2026-06-28 18:43:40 | 507ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-24 01:31:15 | 2455ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-19 04:43:18 | 706ms | 0 NS 0 A 0 MX | ⚠️ Bogus | View |
| 2026-06-18 01:36:37 | 642ms | 2 NS 1 A 0 MX | 🔒 Secure | View |