| 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 | |
|---|---|---|---|---|
| 2026-08-26 17:30:02 | 944ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-25 15:06:59 | 1097ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-25 04:28:39 | 734ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-25 20:58:58 | 1205ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-17 14:22:58 | 814ms | 2 NS 1 A 0 MX | 🔒 Secure | View |