dzk-online.dk is a .dk domain served by 2 nameservers (boyd.ns.cloudflare.com, celeste.ns.cloudflare.com). It was registered on 26 August 2026 (WHOIS) and first appeared in the .dk zone on 27 August 2026. Its website address 104.21.91.157 is hosted by Cloudflare, Inc. (AS13335). 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 |
|---|---|---|---|---|---|---|---|
| 104.21.91.157 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.175.86 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 104.21.91.157 |
| 🔶 Autoconfig | 172.67.175.86 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3033::6815:5b9d | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::ac43:af56 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.91.157,172.67.175.86 ech=AEX+DQBBVAAgACDoxKLAIkAaIhaNMbgHH8jgCAtYlN3rXrrImfbxmjSvWwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:5b9d,2606:4700:3035::ac43:af56 |
| www | 104.21.91.157 172.67.175.86 2606:4700:3033::6815:5b9d 2606:4700:3035::ac43:af56 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network dzk-online.dk: 104.21.91.157 172.67.175.86 2606:4700:3033::6815:5b9d 2606:4700:3035::ac43:af56 (AS13335) www.dzk-online.dk: 104.21.91.157 172.67.175.86 2606:4700:3033::6815:5b9d 2606:4700:3035::ac43:af56 (AS13335) |
| Wildcard | Yes: any name under the zone resolves |
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.dzk-online.dk | lZX29rAraNyxOdS0gSowdNcb_V-qhuBHDxx8MKwBkdk |
| TXT | _acme-challenge.dzk-online.dk | lgDmr1HcyaYCRjTzLoIY2_DNudhDuTGnvbyuosfWO3k |
| 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 | 2413261656 |
| Primary NS (MNAME) | boyd.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | DANDOMAIN A/S |
| Registered | 2026-08-26 |
| Expires | 2027-08-25 (302d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-25 19:05:28 | 2305ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-30 21:13:37 | 2421ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-27 08:35:17 shown | 664ms | 2 NS 2 A 0 MX | 🔓 Insecure |