teoritilkorekort.dk is a .dk domain served by 2 nameservers (hasslo.ns.cloudflare.com, jule.ns.cloudflare.com). It was registered on 16 November 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.54.57 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx1.dandomain.dk, mx2.dandomain.dk. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 104.21.54.57 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.168.24 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mx1.dandomain.dk | 212.237.249.50 | mx1.dandomain.dk | AS48854 team.blue Denmark A/S |
| 20 | 300s | mx2.dandomain.dk | 46.36.209.11 | mx2.dandomain.dk | AS48854 team.blue Denmark A/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::ac43:a818 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::6815:3639 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.54.57,172.67.168.24 ech=AEX+DQBBIQAgACDepu5XFhjNsTaJykFP5aC6eLhW+KKUXtgKGuWt2c26QgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:a818,2606:4700:3037::6815:3639 |
| TXT Record |
|---|
| google-site-verification=Zl3G1g_hdsZzoItdvNL-gMRRRHALq-vzz7i_tlrr4PY |
| v=spf1 include:spf.dandomain.dk ip4:65.108.11.178 ip4:46.4.121.70 ~all |
| Policy | Record (teoritilkorekort.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:spf.dandomain.dk ip4:65.108.11.178 ip4:46.4.121.70 ~all |
| www | 104.21.54.57 172.67.168.24 2606:4700:3032::ac43:a818 2606:4700:3037::6815:3639 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network teoritilkorekort.dk: 104.21.54.57 172.67.168.24 2606:4700:3032::ac43:a818 2606:4700:3037::6815:3639 (AS13335) www.teoritilkorekort.dk: 104.21.54.57 172.67.168.24 2606:4700:3032::ac43:a818 2606:4700:3037::6815:3639 (AS13335) |
| 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: 3/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.teoritilkorekort.dk | DfA7NMXQbh24wkAGXKX36gszvSxbB8vem5IQhkPSKr0 |
| 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 | 2414475446 |
| Primary NS (MNAME) | hasslo.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 | 2023-11-16 |
| Expires | 2026-11-15 (28d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-01 08:36:25 shown | 731ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-30 10:10:01 | 990ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-24 14:26:35 | 694ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-11 13:12:43 | 2003ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-27 08:52:20 | 809ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-18 20:26:10 | 5703ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-07-15 01:36:09 | 2869ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-28 06:00:42 | 938ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-18 06:53:06 | 3099ms | 2 NS 2 A 2 MX | 🔓 Insecure |