| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 216.128.140.76 | 3600s | 216.128.140.76.vultrusercontent.com | AS20473 | The Constant Company, LLC | 216.128.128.0/19 | 🇺🇸 United States | Dallas |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mail.hartmetall.dk | 216.128.140.76 | 216.128.140.76.vultrusercontent.com | AS20473 The Constant Company, LLC |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 1 |
| Primary NS (MNAME) | ns1-37.azure-dns.com |
| Responsible (RNAME) | azuredns-hostmaster@microsoft.com |
| Refresh | 3600s |
| Retry | 300s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 300s |
| Scanned At | Duration | Records | DNSSEC | |
|---|---|---|---|---|
| 2026-06-28 17:16:52 | 1853ms | 4 NS 1 A 1 MX | 🔓 Insecure | View |
| 2026-06-17 11:11:06 | 663ms | 4 NS 1 A 1 MX | 🔓 Insecure | View |
| 2026-06-17 11:03:55 | 990ms | 4 NS 1 A 1 MX | 🔓 Insecure | View |
| 2026-06-17 10:57:35 | 849ms | 4 NS 1 A 1 MX | 🔓 Insecure | View |
| 2026-06-17 10:55:02 | 1023ms | 4 NS 1 A 1 MX | 🔓 Insecure | View |