| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 185.21.41.14 | 3600s | mail.mail-online.dk | AS48854 | team.blue Denmark A/S | 185.21.40.0/22 | 🇩🇰 Denmark | — |
| 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 | 2026082901 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 2025-06-03 |
| Expires | 2027-06-02 (273d) |
| Scanned At | Duration | Records | DNSSEC | |
|---|---|---|---|---|
| 2026-08-30 04:49:14 | 429ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-25 13:07:27 | 479ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-04 09:14:48 | 9508ms | 2 NS 1 A 0 MX | 🔒 Secure | View |
| 2026-07-29 19:52:13 | 1007ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-13 22:34:24 | 6445ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-28 14:17:05 | 536ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-24 10:19:44 | 509ms | 2 NS 1 A 1 MX | ⚠️ Bogus | View |
| 2026-06-16 13:19:25 | 2288ms | 2 NS 1 A 0 MX | 🔒 Secure | View |