| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 172.104.251.132 | 3600s | 172-104-251-132.ip.linodeusercontent.com | AS63949 | Akamai Connected Cloud | 172.104.224.0/19 | 🇩🇪 Germany | Frankfurt am Main |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 172.104.251.132 |
| 🔶 Autoconfig | 172.104.251.132 |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026082101 |
| 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 | |
|---|---|---|---|---|
| 2026-08-22 10:51:16 | 698ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-11 13:13:14 | 4666ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-25 18:07:50 | 16917ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-22 16:37:25 | 812ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-14 22:26:31 | 4574ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-27 15:51:13 | 1240ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-23 10:05:31 | 606ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-21 10:27:05 | 956ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-21 00:11:21 | 862ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-19 10:35:57 | 537ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-17 12:04:04 | 696ms | 2 NS 1 A 0 MX | 🔒 Secure | View |