| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 138.201.57.159 | 43200s | offbyone.dk | AS24940 | Hetzner Online GmbH | 138.201.0.0/16 | 🇩🇪 Germany | Falkenstein |
| 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 | 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 | |
|---|---|---|---|---|
| 2026-08-26 20:33:29 | 600ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-14 06:28:47 | 3626ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-16 19:38:31 | 8536ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-02 21:01:28 | 9513ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-23 01:25:01 | 794ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-17 06:50:32 | 455ms | 2 NS 1 A 0 MX | 🔒 Secure | View |