duckertholding.dk is a .dk domain served by 2 nameservers (alfred.ns.cloudflare.com, carrera.ns.cloudflare.com). It was registered on 26 February 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by duckertholding-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| alfred.ns.cloudflare.com | — | — | — |
| carrera.ns.cloudflare.com | — | — | — |
| TXT Record |
|---|
| MS=ms38688949 |
| v=spf1 include:spf.protection.outlook.com ~all |
| Policy | Record (duckertholding.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:spf.protection.outlook.com ~all |
| Policy | Record (_dmarc.duckertholding.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; adkim=r; aspf=r; |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves duckertholding.dk: no address www.duckertholding.dk: no address |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-duckertholding-dk._domainkey.jduckertholding.y-v1.dkim.mail.microsoft | RSA · ~2048 bit |
| selector2 | selector2-duckertholding-dk._domainkey.jduckertholding.y-v1.dkim.mail.microsoft | RSA · ~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| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2403359201 |
| Primary NS (MNAME) | alfred.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | DANDOMAIN A/S |
| Registered | 2026-02-26 |
| Expires | 2027-02-25 (131d) |
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 |
|---|---|
| dentyou.dk | Eurodns S.A |
| gernyx-fotograf.dk | Punktum dk A/S (direct) |
| justface.dk | Punktum dk A/S (direct) |
| zanity.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-23 18:33:09 | 1004ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-13 07:23:11 | 1284ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-31 21:34:34 | 9895ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-26 09:59:35 | 1501ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-23 11:40:01 | 4784ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-24 22:45:36 | 9138ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-02 19:02:12 | 10203ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-26 05:58:46 | 1420ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-24 14:28:54 | 2105ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-22 17:13:27 | 2130ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-22 06:11:36 | 913ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 04:55:41 shown | 758ms | 2 NS 0 A 1 MX | 🔓 Insecure |