| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 87.48.15.136 | 1800s | 87-48-15-136-cable.dk.customer.tdc.net | AS3292 | TDC Holding A/S | 87.48.0.0/13 | 🇩🇰 Denmark | Kastrup |
| 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 | 2026081101 |
| 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 | |
|---|---|---|---|---|
| 2026-08-22 22:39:34 | 4573ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-11 20:39:12 | 3460ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-17 21:33:41 | 543ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-14 05:21:39 | 856ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-02 14:35:58 | 2191ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-27 08:39:09 | 483ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-25 09:43:35 | 373ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-20 17:04:48 | 958ms | 0 NS 0 A 0 MX | ❓ Unknown | View |
| 2026-06-19 06:56:18 | 633ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-18 06:15:49 | 558ms | 2 NS 1 A 0 MX | 🔒 Secure | View |