cenku.dk is a .dk domain served by 2 nameservers (ns1.dnshotel.dk, ns2.dnshotel.dk). It was registered on 24 March 2014 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.46 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by cenku.dk. The zone is not DNSSEC-signed, has no 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 185.21.40.46 | 360s | vm1440.enterprisecloud.nu | AS48854 | team.blue Denmark A/S | 185.21.40.0/22 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 360s | cenku.dk | 185.21.40.46 | vm1440.enterprisecloud.nu | AS48854 team.blue Denmark A/S |
| TXT Record |
|---|
| v=spf1 a mx +ip4:195.201.243.87 +include:relay.mailchannels.net include:web.shared.mysmtp.com ~all |
| Policy | Record (cenku.dk) |
|---|---|
| ~all (soft fail) | v=spf1 a mx +ip4:195.201.243.87 +include:relay.mailchannels.net include:web.shared.mysmtp.com ~all |
| www CNAME | cenku.dk (all on cenku.dk) → 185.21.40.46 (AS48854) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| default | — | 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: 7/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.cenku.dk | ok5LBVmGKXdf9jAUB35yQHaMiahjPYigpv8FUqUAIV8 |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026062304 |
| Primary NS (MNAME) | ns1.dnshotel.dk |
| Responsible (RNAME) | lars@alphasite.dk |
| Refresh | 3600s |
| Retry | 1800s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2014-03-24 |
| Expires | 2027-03-31 (156d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-24 21:23:48 | 1135ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-23 20:26:19 | 881ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-25 12:55:08 | 6644ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-23 12:25:47 shown | 13545ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-05 23:38:16 | 4813ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-25 19:19:05 | 862ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-23 13:48:41 | 2876ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-20 18:23:35 | 1065ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-19 16:17:38 | 2465ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-16 23:29:49 | 65535ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-16 20:08:56 | 408ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-16 20:05:16 | 1452ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-16 20:01:34 | 526ms | 2 NS 1 A 1 MX | 🔓 Insecure |