| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 212.237.249.12 | 3600s | lb1.builder.nu | AS48854 | team.blue Denmark A/S | 212.237.248.0/23 | 🇩🇰 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 | 2026082501 |
| 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 21:10:28 | 865ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-14 09:36:33 | 4532ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-26 05:47:44 | 545ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-15 15:28:13 | 4821ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-03 13:03:49 | 437ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-26 16:39:35 | 490ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-16 14:55:51 | 406ms | 2 NS 1 A 0 MX | 🔒 Secure | View |