| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 87.55.253.139 | 43200s | 87-55-253-139-static.dk.customer.tdc.net | AS3292 | TDC Holding A/S | 87.48.0.0/13 | 🇩🇰 Denmark | Vejle |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 87.55.253.139 |
| 🔶 Autoconfig | 87.55.253.139 |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026082601 |
| 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 23:02:36 | 591ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-11 09:26:32 | 4653ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-27 12:26:15 | 8697ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-19 07:21:12 | 4746ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-29 23:07:23 | 616ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-25 20:12:31 | 517ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-19 17:56:54 | 494ms | 2 NS 1 A 1 MX | ⚠️ Bogus | View |
| 2026-06-17 13:11:37 | 499ms | 2 NS 1 A 0 MX | 🔒 Secure | View |