chrestensen.dk is a .dk domain served by 2 nameservers (hazel.ns.cloudflare.com, jobs.ns.cloudflare.com). It was registered on 26 February 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx1.mxfilter.net, mx2.mxfilter.net and 2 more. 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mx1.mxfilter.net | 23.147.8.11 | mx1.mxfilter.net | AS46824 NameCrane LLC |
| 10 | 300s | mx2.mxfilter.net | 162.244.95.10 | mx2.mxfilter.net | AS965 Webhosting Holdings LLC |
| 20 | 300s | mx3.mxfilter.net | 23.147.8.11 | mx1.mxfilter.net | AS46824 NameCrane LLC |
| 20 | 300s | mx4.mxfilter.net | 162.244.95.10 | mx2.mxfilter.net | AS965 Webhosting Holdings LLC |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | eu1.workspace.org → 193.108.130.81 |
| TXT Record |
|---|
| v=spf1 include:_spf.workspace.org -all |
| Policy | Record (chrestensen.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.workspace.org -all |
| Policy | Record (_dmarc.chrestensen.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:9d22d8c2c3f2433b96dbf90887bf9be3@dmarc-reports.cloudflare.net |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves chrestensen.dk: no address www.chrestensen.dk: no address |
| Wildcard | No |
DNS lookups: 1/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.chrestensen.dk | 3OjopMb7m9oCh0Jo4Ly_YGUt2LSu02_53mjz80cyIgA |
| TXT | _acme-challenge.chrestensen.dk | gN3vE_lbzYVicMitwEPaxLCT2wklfuscbTIP9gRQp-A |
| 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 | 2407287650 |
| Primary NS (MNAME) | hazel.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 | 2002-02-26 |
| Expires | 2027-03-31 (165d) |
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 |
|---|---|
| chre.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 20:57:34 | 1489ms | 2 NS 0 A 4 MX | 🔓 Insecure |
| 2026-10-01 04:10:39 | 1979ms | 2 NS 0 A 4 MX | 🔓 Insecure |
| 2026-09-29 21:49:54 | 1365ms | 2 NS 0 A 4 MX | 🔓 Insecure |
| 2026-09-12 04:36:53 | 1694ms | 2 NS 0 A 4 MX | 🔓 Insecure |
| 2026-08-22 02:03:08 | 11619ms | 2 NS 0 A 4 MX | 🔓 Insecure |
| 2026-08-19 23:11:52 | 4393ms | 2 NS 0 A 4 MX | 🔓 Insecure |
| 2026-08-16 15:56:06 | 13022ms | 2 NS 0 A 4 MX | 🔓 Insecure |
| 2026-07-01 03:45:17 | 2021ms | 2 NS 0 A 4 MX | 🔓 Insecure |
| 2026-06-19 23:14:27 shown | 1223ms | 2 NS 0 A 4 MX | 🔓 Insecure |
| 2026-06-19 08:24:52 | 3856ms | 2 NS 0 A 4 MX | 🔓 Insecure |
| 2026-06-18 17:25:52 | 1490ms | 2 NS 0 A 4 MX | 🔓 Insecure |
| 2026-06-16 20:36:07 | 3393ms | 2 NS 0 A 4 MX | 🔓 Insecure |