| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 138.201.255.81 | 3600s | server.concrete5danmark.dk | AS24940 | Hetzner Online GmbH | 138.201.0.0/16 | 🇩🇪 Germany | Falkenstein |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 600s | . Null MX — domain accepts no email (RFC 7505) | |||
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 138.201.255.81 |
| 🔶 Autoconfig | 138.201.255.81 |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026061201 |
| 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 | |
|---|---|---|---|---|
| 2026-08-26 15:00:34 | 856ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-13 02:48:36 | 2907ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-19 07:12:54 | 482ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-16 23:46:17 | 633ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-26 15:39:30 | 2376ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-21 15:20:41 | 916ms | 0 NS 0 A 0 MX | ❓ Unknown | View |
| 2026-06-21 09:42:35 | 359ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-17 13:55:53 | 1546ms | 2 NS 1 A 0 MX | 🔒 Secure | View |