| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| dns-a.duelhost.dk | 138.201.61.68 | cde3.duelhost.dk | AS24940 Hetzner Online GmbH |
| dns-b.duelhost.dk | 195.201.247.10 | dns-b.duelhost.dk | AS24940 Hetzner Online GmbH |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 138.201.61.68 | 3600s | cde3.duelhost.dk | AS24940 | Hetzner Online GmbH | 138.201.0.0/16 | 🇩🇪 Germany | Falkenstein |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mail.preppinglisten.dk | 138.201.61.68 | cde3.duelhost.dk | AS24940 Hetzner Online GmbH |
| TXT Record |
|---|
| v=spf1 a mx include:relay.mailchannels.net -all |
| Policy | Record (preppinglisten.dk) |
|---|---|
| -all (hard fail) | v=spf1 a mx include:relay.mailchannels.net -all |
| Policy | Record (_dmarc.preppinglisten.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; sp=none |
| 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 | 2025093007 |
| Primary NS (MNAME) | dns-a.duelhost.dk |
| Responsible (RNAME) | hostmaster@preppinglisten.dk |
| Refresh | 3600s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Scanned At | Duration | Records | DNSSEC | |
|---|---|---|---|---|
| 2026-09-01 11:58:15 | 9464ms | 2 NS 1 A 1 MX | 🔓 Insecure | View |
| 2026-08-26 15:35:19 | 745ms | 2 NS 1 A 1 MX | 🔓 Insecure | View |
| 2026-06-27 02:32:53 | 1223ms | 2 NS 1 A 1 MX | 🔓 Insecure | View |
| 2026-06-25 06:36:21 | 1513ms | 2 NS 1 A 1 MX | 🔓 Insecure | View |
| 2026-06-17 23:22:13 | 10206ms | 2 NS 1 A 1 MX | 🔓 Insecure | View |