cbrteknik.dk is a .dk domain served by 2 nameservers (ophelia.ns.cloudflare.com, zod.ns.cloudflare.com). It was registered on 22 January 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 23.81.33.121 is hosted by Leaseweb UK Limited (AS205544) in United Kingdom. Mail is handled by web2.supergeek.dk. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 23.81.33.121 | 300s | web2.supergeek.dk | AS205544 | Leaseweb UK Limited | 23.81.32.0/21 | 🇬🇧 United Kingdom | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | web2.supergeek.dk | 23.81.33.121 | web2.supergeek.dk | AS205544 Leaseweb UK Limited |
| TXT Record |
|---|
| v=spf1 ip4:23.81.33.121 -all |
| Policy | Record (cbrteknik.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:23.81.33.121 -all |
| Policy | Record (_dmarc.cbrteknik.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; pct=100; rua=mailto:dmarc@supergeek.dk; adkim=r; aspf=r |
| www | 23.81.33.121 (AS205544) (address records, no CNAME) |
| 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: 0/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.cbrteknik.dk | 2-MuvGK0Pl4C8fkc0DlFxkISNfVQr1p3pbOqQVDLbl8 |
| TXT | _acme-challenge.cbrteknik.dk | I3tkzuHY9HpupnOsfAGscDQlJG_GWTAXm7Sb778JT5Y |
| TXT | _acme-challenge.cbrteknik.dk | Uc2iKDHzPorSG2vJDKYdidALCjW4Ryq-D66CEkcl9S8 |
| 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 | 2413408215 |
| Primary NS (MNAME) | ophelia.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 | 2011-01-22 |
| Expires | 2027-01-31 (101d) |
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 |
|---|---|
| skoleteknik.dk | DANDOMAIN A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-04 00:47:37 | 516ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-01 00:29:14 | 718ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-30 01:48:42 | 450ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-24 11:51:37 | 594ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-19 19:13:45 | 1240ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-10 14:52:49 | 1488ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-03 10:31:29 shown | 10204ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-28 16:46:46 | 1280ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-07 05:36:33 | 1080ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-22 23:50:26 | 961ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-21 20:57:44 | 842ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-16 19:50:27 | 499ms | 2 NS 1 A 1 MX | 🔓 Insecure |