| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 20.16.49.251 | 3600s | — | AS8075 | Microsoft Corporation | 20.0.0.0/11 | 🇳🇱 The Netherlands | Amsterdam |
| 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 | 2026081101 |
| 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 | |
|---|---|---|---|---|
| 2026-08-28 06:51:07 | 665ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-26 12:32:50 | 680ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-12 12:43:54 | 637ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-18 00:01:28 | 8640ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-13 04:26:50 | 640ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-21 14:28:50 | 512ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-21 01:26:16 | 445ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-17 00:48:38 | 361ms | 2 NS 1 A 0 MX | 🔒 Secure | View |
| 2026-06-17 00:40:08 | 435ms | 2 NS 1 A 0 MX | 🔒 Secure | View |