| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 89.23.253.254 | 86000s | 89-23-253-254.ip4.fiberby.net | AS42541 | Fiberby ApS | 89.23.224.0/19 | 🇩🇰 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 | ncache nxdomain overridden by dig AD |
| Field | Value |
|---|---|
| Serial | 2026080801 |
| 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 | |
|---|---|---|---|---|
| 2026-08-12 12:28:35 | 1435ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-11 12:53:49 | 2552ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-21 22:12:03 | 1659ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-21 10:42:02 | 1114ms | 0 NS 0 A 0 MX | ❓ Unknown | View |
| 2026-06-17 05:05:37 | 420ms | 2 NS 1 A 0 MX | 🔒 Secure | View |