| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 87.50.70.79 | 43200s | 87-50-70-79-cable.dk.customer.tdc.net | AS3292 | TDC Holding A/S | 87.48.0.0/13 | 🇩🇰 Denmark | Hvidovre |
| 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 | 2026090601 |
| 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 | |
|---|---|---|---|---|
| 2026-09-12 10:20:09 | 719ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-09 19:59:23 | 650ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-09 11:21:05 | 898ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-28 23:32:40 | 491ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-17 11:31:38 | 689ms | 2 NS 1 A 0 MX | 🔒 Secure | View |