| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 188.177.43.221 | 1800s | 188-177-43-221-cable.dk.customer.tdc.net | AS3292 | TDC Holding A/S | 188.176.0.0/13 | 🇩🇰 Denmark | Copenhagen |
| 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 | 2026081001 |
| 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 | |
|---|---|---|---|---|
| 2026-08-27 09:26:55 | 487ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-16 03:29:38 | 4593ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-10 15:30:12 | 1372ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-17 06:04:36 | 1031ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-04 17:22:44 | 9487ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-24 10:06:27 | 724ms | 2 NS 1 A 1 MX | ⚠️ Bogus | View |
| 2026-06-22 11:00:02 | 4953ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-17 11:55:47 | 437ms | 2 NS 1 A 0 MX | 🔒 Secure | View |