| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 87.58.243.247 | 43200s | 87-58-243-247-dynamic.dk.customer.tdc.net | AS3292 | TDC Holding A/S | 87.58.224.0/19 | 🇩🇰 Denmark | Køge |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 87.58.243.247 |
| 🔶 Autoconfig | 87.58.243.247 |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026081301 |
| 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 | |
|---|---|---|---|---|
| 2026-08-15 12:07:20 | 8833ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-15 16:39:02 | 1232ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-26 02:09:16 | 1965ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-25 19:37:34 | 578ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-21 00:43:48 | 1676ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-17 07:15:51 | 384ms | 2 NS 1 A 0 MX | 🔒 Secure | View |