| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 76.76.21.21 | 600s | — | 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 | 2026082001 |
| 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 | |
|---|---|---|---|---|
| 2026-08-25 19:57:47 | 494ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-20 17:22:15 | 3520ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-21 00:07:34 | 8460ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-24 13:33:59 | 661ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-23 09:01:41 | 1062ms | 0 NS 0 A 0 MX | ❓ Unknown | View |
| 2026-06-21 11:01:54 | 667ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-20 21:13:29 | 1120ms | 0 NS 0 A 0 MX | ❓ Unknown | View |
| 2026-06-16 13:21:07 | 522ms | 2 NS 1 A 0 MX | 🔒 Secure | View |