cetacyberdefence.dk is a .dk domain served by 2 nameservers (curt.ns.cloudflare.com, hera.ns.cloudflare.com). It was registered on 1 October 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by cetacyberdefence-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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.
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.154.136 |
| 🔶 Autoconfig | cetacyberdefence.dk |
| TXT Record |
|---|
| MS=ms63430024 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (cetacyberdefence.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.cetacyberdefence.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; |
| www | 104.21.7.183 172.67.137.41 2606:4700:3033::ac43:8929 2606:4700:3035::6815:7b7 (AS13335) (address records, no CNAME) |
| www vs bare domain | Only www resolves cetacyberdefence.dk: no address (all like this)www.cetacyberdefence.dk: 104.21.7.183 172.67.137.41 2606:4700:3033::ac43:8929 2606:4700:3035::6815:7b7 (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 |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-cetacyberdefence-dk._domainkey.cetacyberdefense.onmicrosoft.com | RSA · ~1024 bit below 2048 bit |
| selector2 | selector2-cetacyberdefence-dk._domainkey.cetacyberdefense.onmicrosoft.com | RSA · ~1024 bit below 2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 1/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.cetacyberdefence.dk | cetacyberdefence.dk |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2417504096 |
| Primary NS (MNAME) | curt.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2019-10-01 |
| Expires | 2032-10-31 (2205d) |
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 |
|---|---|
| centera.dk | Punktum dk A/S (direct) |
| centerasecurity.dk | Punktum dk A/S (direct) |
| cetacyberdefense.dk | Punktum dk A/S (direct) |
| spf-protect.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 16:40:38 shown | 1420ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-01 01:40:22 | 1892ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-23 23:43:28 | 827ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-16 08:07:04 | 964ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-28 16:46:48 | 1652ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-07 07:17:03 | 2891ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-19 04:16:48 | 17459ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-17 01:21:20 | 2053ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-11 11:51:33 | 1269ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-20 23:08:14 | 608ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-16 20:10:27 | 692ms | 2 NS 0 A 1 MX | 🔒 Secure |