| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 76.76.21.21 | 3600s | — | AS16509 | Amazon.com, Inc. | 76.76.21.0/24 | 🇺🇸 United States | Walnut |
| 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 | 2026082401 |
| 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 20:21:16 | 2428ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-25 07:55:29 | 1619ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-11 11:06:40 | 5078ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-25 18:02:25 | 658ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-17 16:26:51 | 4578ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-02 14:29:10 | 2512ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-26 19:08:59 | 2324ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-23 10:25:44 | 1098ms | 0 NS 0 A 0 MX | ❓ Unknown | View |
| 2026-06-19 11:43:14 | 483ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-17 06:15:22 | 378ms | 2 NS 1 A 0 MX | 🔒 Secure | View |