gustavtesch.dk is a .dk domain served by 2 nameservers (dns-c.duelhost.dk, dns-d.duelhost.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 142.132.130.246 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by mail.gustavtesch.dk. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| dns-c.duelhost.dk | 142.132.130.246 | cde2.duelhost.dk | AS24940 Hetzner Online GmbH |
| dns-d.duelhost.dk | 195.201.247.4 | dns-d.duelhost.dk | AS24940 Hetzner Online GmbH |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 142.132.130.246 | 3600s | cde2.duelhost.dk | AS24940 | Hetzner Online GmbH | 142.132.128.0/17 | 🇩🇪 Germany | Falkenstein |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mail.gustavtesch.dk | 142.132.130.246 | cde2.duelhost.dk | AS24940 Hetzner Online GmbH |
| TXT Record |
|---|
| v=spf1 a mx include:relay.mailchannels.net -all |
| Policy | Record (gustavtesch.dk) |
|---|---|
| -all (hard fail) | v=spf1 a mx include:relay.mailchannels.net -all |
| Policy | Record (_dmarc.gustavtesch.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; sp=none |
| www | 195.242.131.100 (AS62121) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 3/10 · policy: -all
No problems found| 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 | 2026011503 |
| Primary NS (MNAME) | dns-c.duelhost.dk |
| Responsible (RNAME) | hostmaster@gustavtesch.dk |
| Refresh | 3600s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-29 21:26:55 | 764ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-23 14:35:19 | 784ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-21 17:51:29 | 580ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-19 07:40:26 | 1178ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-13 19:06:24 | 757ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-10 18:43:49 | 931ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-26 10:59:41 | 702ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-24 16:01:12 | 2687ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-22 15:02:58 | 8893ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-20 14:28:33 | 1803ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-19 11:26:07 | 1194ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-17 09:11:45 | 2607ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-13 22:32:26 shown | 827ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-12 20:06:32 | 1362ms | 2 NS 1 A 1 MX | ❓ Unknown |
| 2026-08-11 10:33:39 | 2855ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-06 09:40:37 | 2165ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-25 23:26:36 | 9508ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-23 22:42:28 | 1008ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-22 21:32:39 | 883ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-05 18:01:44 | 1185ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-04 15:17:55 | 12067ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-03 13:46:07 | 1681ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-29 22:50:55 | 801ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-27 09:22:02 | 730ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-24 00:30:44 | 1921ms | 2 NS 1 A 1 MX | 🔓 Insecure |