nielsenhost.dk is a .dk domain served by 2 nameservers (dahlia.ns.cloudflare.com, zeus.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.73.85 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 |
|---|---|---|---|---|---|---|---|
| 104.21.73.85 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.142.8 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::ac43:8e08 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::6815:4955 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.73.85,172.67.142.8 ech=AEX+DQBBsQAgACBQ30TbiZW7IIvZ8ZL95VRd3spVoHNmLmga9zbmHuDCLgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:8e08,2606:4700:3035::6815:4955 |
| www | 104.21.73.85 172.67.142.8 2606:4700:3030::ac43:8e08 2606:4700:3035::6815:4955 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network nielsenhost.dk: 104.21.73.85 172.67.142.8 2606:4700:3030::ac43:8e08 2606:4700:3035::6815:4955 (AS13335) www.nielsenhost.dk: 104.21.73.85 172.67.142.8 2606:4700:3030::ac43:8e08 2606:4700:3035::6815:4955 (AS13335) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Delete signal: the zone asks the registry to remove its DS (go insecure) 1 CDS, 1 CDNSKEY |
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.nielsenhost.dk | JB4gUwP302i4SRaiwiiCP90JUJsAnKGcEatOxJhOCtU |
| TXT | _acme-challenge.nielsenhost.dk | qOKuQ2P2XYn5tvSR_o0CYLu_HrDaQSaEjvYtIwtPsVk |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2415997307 |
| Primary NS (MNAME) | dahlia.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-14 07:47:00 | 1799ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-08 18:43:37 | 1954ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-07 18:38:59 | 440ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-30 20:52:38 | 526ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-29 14:44:00 | 1279ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-28 05:43:02 shown | 895ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-23 04:11:08 | 1217ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-14 19:09:28 | 1792ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-26 22:57:29 | 658ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-26 18:24:10 | 506ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-07 05:57:31 | 896ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-03 06:44:19 | 916ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-18 21:47:34 | 8783ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-16 10:47:20 | 9730ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-10 23:19:58 | 8713ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-05 18:28:59 | 998ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-01 13:14:29 | 815ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-17 15:14:19 | 818ms | 2 NS 2 A 0 MX | 🔓 Insecure |