nielsbyskov.dk is a .dk domain served by 2 nameservers (gigi.ns.cloudflare.com, marty.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 104.21.15.74 is hosted by Cloudflare, Inc. (AS13335). The zone is DNSSEC-signed and validates, 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 |
|---|---|---|---|---|---|---|---|
| 104.21.15.74 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.161.238 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::6815:f4a | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3033::ac43:a1ee | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.15.74,172.67.161.238 ech=AEX+DQBB0AAgACAz5nfXThxh7tXyOGnXUCHwComzSF5QNIVuNfgodIu+fQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:f4a,2606:4700:3033::ac43:a1ee |
| www | 104.21.15.74 172.67.161.238 2606:4700:3031::6815:f4a 2606:4700:3033::ac43:a1ee (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network nielsbyskov.dk: 104.21.15.74 172.67.161.238 2606:4700:3031::6815:f4a 2606:4700:3033::ac43:a1ee (AS13335) www.nielsbyskov.dk: 104.21.15.74 172.67.161.238 2606:4700:3031::6815:f4a 2606:4700:3033::ac43:a1ee (AS13335) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2415389567 |
| Primary NS (MNAME) | gigi.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2026-08-27 |
| Expires | 2027-08-26 (311d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 08:40:43 | 427ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-30 22:30:28 shown | 744ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-30 01:22:10 | 401ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-23 17:55:52 | 684ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-19 09:49:40 | 2279ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-31 19:25:24 | 1075ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-30 03:30:54 | 891ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-28 08:37:47 | 613ms | 2 NS 2 A 0 MX | 🔒 Secure |