grundfast.dk is a .dk domain served by 2 nameservers (ns1.hoststack.dev, ns2.hoststack.dev). It was registered on 17 June 2026 (WHOIS) and first appeared in the .dk zone on 19 June 2026. Its website address 204.168.149.149 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by inbound.poststack.dev. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 204.168.149.149 | 3600s | static.149.149.168.204.clients.your-server.de | AS24940 | Hetzner Online GmbH | 204.168.128.0/17 | 🇩🇪 Germany | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | inbound.poststack.dev | 89.167.61.217 | poststack.dev | AS24940 Hetzner Online GmbH |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _imaps._tcp | 0 | 1 | 993 | poststack.dev |
| TXT Record |
|---|
| google-site-verification=O4Ain99OogT9H8lK96jFNsWc0C1FAjKOHiux41-HhCQ |
| v=MCPv1; k=ed25519; p=QNUNi637iZ6xVpcis1j1Z3c4vDEQVkz4oGKDdvAVSfs= |
| v=spf1 include:poststack.dev -all |
| Policy | Record (grundfast.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:poststack.dev -all |
| Policy | Record (_dmarc.grundfast.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:dmarc@poststack.dev |
| www | 204.168.149.149 (AS24940) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 0 CDS, 1 CDNSKEY |
DNS lookups: 1/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026082701 |
| Primary NS (MNAME) | ns1.hoststack.dev |
| Responsible (RNAME) | hostmaster@hoststack.dev |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2026-06-17 |
| Expires | 2027-06-16 (237d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-22 03:59:25 | 1059ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-15 14:20:52 | 1095ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-08 19:21:59 | 2143ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-07 19:18:07 | 2282ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-01 07:50:16 | 1282ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-24 05:59:36 | 1299ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-22 16:29:20 | 1487ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-13 10:17:25 | 2123ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-03 04:19:24 | 10138ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-27 23:52:36 shown | 1319ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-27 18:48:41 | 720ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-22 00:44:06 | 1243ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-21 00:31:35 | 5156ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-14 00:51:48 | 1184ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-09 20:54:42 | 9982ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-04 17:36:41 | 2660ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-23 04:00:15 | 3187ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-18 14:22:20 | 1637ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-15 20:33:59 | 2074ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-07-03 10:24:46 | 3019ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-25 14:15:17 | 1121ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-21 04:23:34 | 1468ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-19 08:52:42 | 1354ms | 2 NS 1 A 0 MX | 🔓 Insecure |