blok4.dk is a .dk domain served by 2 nameservers (emerie.ns.cloudflare.com, jeff.ns.cloudflare.com). It was registered on 27 August 2026 (WHOIS) and first appeared in the .dk zone on 28 August 2026. Its website address 104.21.75.76 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx1.blok4.dk, mx2.blok4.dk and 1 more. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.75.76 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.217.56 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 15 | 300s | mx1.blok4.dk | — | — | — |
| 25 | 300s | mx2.blok4.dk | — | — | — |
| 30 | 300s | mx3.blok4.dk | — | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::ac43:d938 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::6815:4b4c | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.75.76,172.67.217.56 ech=AEX+DQBBuAAgACBeWfLyd08MrrxQgz3O0ws1h/j6yhgH1+4jTfFQ5Y6qawAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:d938,2606:4700:3037::6815:4b4c |
| www | 104.21.75.76 172.67.217.56 2606:4700:3031::ac43:d938 2606:4700:3037::6815:4b4c (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| 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 | 2413585962 |
| Primary NS (MNAME) | emerie.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Realtime Register B.V. |
| Registered | 2026-08-27 |
| Expires | 2027-08-26 (313d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
| Domain | Registrar |
|---|---|
| oresundskonsortiet.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-01 07:13:48 | 499ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-25 12:49:27 shown | 620ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-30 22:29:20 | 576ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-28 08:36:09 | 668ms | 2 NS 2 A 3 MX | 🔓 Insecure |