centerholbaek.dk is a .dk domain served by 2 nameservers (albert.ns.cloudflare.com, davina.ns.cloudflare.com). It was registered on 2 October 2026 (WHOIS) and first appeared in the .dk zone on 3 October 2026. Its website address 104.21.47.96 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 our latest 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 |
|---|---|---|---|---|---|---|---|
| 104.21.47.96 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.146.100 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3033::ac43:9264 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::6815:2f60 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.47.96,172.67.146.100 ech=AEX+DQBBpQAgACCzfTywz893SeqNblrNZkgfc7VfqJ+6U0MtaYQgCkb4WQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::ac43:9264,2606:4700:3035::6815:2f60 |
| www | 104.21.47.96 172.67.146.100 2606:4700:3033::ac43:9264 2606:4700:3035::6815:2f60 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network centerholbaek.dk: 104.21.47.96 172.67.146.100 2606:4700:3033::ac43:9264 2606:4700:3035::6815:2f60 (AS13335) www.centerholbaek.dk: 104.21.47.96 172.67.146.100 2606:4700:3033::ac43:9264 2606:4700:3035::6815:2f60 (AS13335) |
| 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 | 2416946369 |
| Primary NS (MNAME) | albert.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Openprovider |
| Registered | 2026-10-02 |
| Expires | 2027-10-01 (349d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-10 04:26:18 shown | 751ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-03 08:30:53 | 499ms | 2 NS 0 A 0 MX | 🔓 Insecure |