dualstack.dk is a .dk domain served by 2 nameservers (coleman.ns.cloudflare.com, fay.ns.cloudflare.com). It was registered on 10 November 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. We saw it become registrar-handled on 11 October 2026, when it moved from direct registration at Punktum to dns.services ApS. Its website address 104.21.3.146 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 |
|---|---|---|---|---|---|---|---|
| 104.21.3.146 | 600s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.130.211 | 600s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::6815:392 | 600s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3036::ac43:82d3 | 600s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.3.146,172.67.130.211 ech=AEX+DQBBDAAgACD2tpX44dE776O1qEe4pBYcf9gV2sYonx2xzeulGUbiNgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:392,2606:4700:3036::ac43:82d3 |
| TXT Record |
|---|
| v=DMARC1; p=reject; |
| v=spf1 -all |
| Policy | Record (dualstack.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| www CNAME | dualstack.dk (all on dualstack.dk) |
| www vs bare domain | Same network dualstack.dk: 86.52.119.142 2a13:8a02:7001:4766::affe (AS39642 AS213320) www.dualstack.dk: 86.52.119.142 2a13:8a02:7001:4766::affe (AS39642 AS213320) |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 0/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2407017934 |
| Primary NS (MNAME) | coleman.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | dns.services ApS |
| Registered | 2010-11-10 |
| Expires | 2026-11-30 (43d) |
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).
| Domain | Registrar |
|---|---|
| blacknote.dk | dns.services ApS |
| kippers.dk | dns.services ApS |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 21:45:17 | 3611ms | 5 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-11 20:38:38 | 856ms | 5 NS 1 A 0 MX | 🔓 Insecure |
| 2026-10-09 19:41:46 | 433ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-30 13:57:57 | 521ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-30 02:49:03 | 518ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-26 18:25:24 | 568ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-23 13:18:13 | 665ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-15 14:11:09 | 630ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-01 03:29:21 | 1123ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-27 11:08:02 | 525ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-11 04:53:46 | 2848ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-08-04 00:40:39 | 1350ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-07-24 06:49:03 | 3542ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-07-16 02:39:26 | 1173ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-26 11:02:54 | 1018ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-25 18:22:14 shown | 819ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-25 15:14:19 | 911ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-17 04:55:20 | 446ms | 2 NS 2 A 0 MX | 🔒 Secure |