| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 87.49.244.21 | 3600s | 87-49-244-21-cable.dk.customer.tdc.net | AS3292 | TDC Holding A/S | 87.48.0.0/13 | 🇩🇰 Denmark | Nykøbing Mors |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 87.49.244.21 |
| 🔶 Autoconfig | 87.49.244.21 |
| 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 | |
|---|---|---|---|---|
| 2026-09-03 23:22:35 | 710ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-27 12:21:59 | 939ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-10 12:22:13 | 3364ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-15 18:29:17 | 573ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-11 08:04:56 | 8347ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-28 10:05:27 | 541ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-25 11:49:27 | 521ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-24 06:22:19 | 1151ms | 0 NS 0 A 0 MX | ❓ Unknown | View |
| 2026-06-23 00:29:41 | 1174ms | 0 NS 0 A 0 MX | ❓ Unknown | View |
| 2026-06-20 17:34:07 | 954ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-17 09:07:58 | 778ms | 2 NS 1 A 0 MX | 🔒 Secure | View |