| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 192.30.252.153 | 43200s | lb-192-30-252-153-iad.github.com | AS36459 | GitHub, Inc. | 192.30.252.0/22 | 🇺🇸 United States | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | tilbagekaldt.dk → 192.30.252.153 |
| 🔶 Autoconfig | tilbagekaldt.dk → 192.30.252.153 |
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.tilbagekaldt.dk | tilbagekaldt.dk |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026080401 |
| 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 09:34:24 | 616ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-19 08:36:34 | 4908ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-06 18:07:16 | 8778ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-27 11:17:07 | 4723ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-07 00:11:15 | 3042ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-23 19:36:26 | 3658ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-22 16:12:53 | 1186ms | 0 NS 0 A 0 MX | ❓ Unknown | View |
| 2026-06-17 15:20:55 | 972ms | 2 NS 1 A 0 MX | 🔒 Secure | View |