holstchristensen.dk is a .dk domain served by 2 nameservers (collins.ns.cloudflare.com, mike.ns.cloudflare.com). It was registered on 3 April 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.1.175 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 |
|---|---|---|---|---|---|---|---|
| 104.21.1.175 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.129.171 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3033::6815:1af | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3033::ac43:81ab | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.1.175,172.67.129.171 ech=AEX+DQBB8AAgACBQtB3/bF2MkiwRKDn2FbKQD5Xovg4XyRyecJV8EQBgHQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:1af,2606:4700:3033::ac43:81ab |
| TXT Record |
|---|
| v=spf1 ip4:148.251.244.167 +a +mx +ip4:157.90.179.89 ~all |
| Policy | Record (holstchristensen.dk) |
|---|---|
| ~all (soft fail) | v=spf1 ip4:148.251.244.167 +a +mx +ip4:157.90.179.89 ~all |
| www | 104.21.1.175 172.67.129.171 2606:4700:3033::6815:1af 2606:4700:3033::ac43:81ab (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network holstchristensen.dk: 104.21.1.175 172.67.129.171 2606:4700:3033::6815:1af 2606:4700:3033::ac43:81ab (AS13335) www.holstchristensen.dk: 104.21.1.175 172.67.129.171 2606:4700:3033::6815:1af 2606:4700:3033::ac43:81ab (AS13335) |
| Wildcard | No |
DNS lookups: 2/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.holstchristensen.dk | cwm8qoIj4CmppeitIsLCaA52d9ATptqAgR0f6rvPHuY |
| 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 | 2416762000 |
| Primary NS (MNAME) | collins.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | nordicway ApS |
| Registered | 2026-04-03 |
| Expires | 2027-04-02 (159d) |
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 |
|---|---|---|---|
| 2026-10-23 03:06:20 | 2014ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-16 06:14:33 | 446ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-06 13:01:43 shown | 3221ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-05 11:39:39 | 1146ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-30 11:17:45 | 549ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-30 01:22:06 | 581ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-28 07:54:38 | 1145ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-04 06:36:31 | 538ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-28 04:45:40 | 9512ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-08 07:30:25 | 1013ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-03 04:00:12 | 1057ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-03 15:00:33 | 3262ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-25 06:25:38 | 2697ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-17 13:23:58 | 3067ms | 2 NS 2 A 0 MX | 🔓 Insecure |