lektier-online.dk is a .dk domain served by 2 nameservers (kim.ns.cloudflare.com, max.ns.cloudflare.com). It was registered on 27 November 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.5.208 is hosted by Cloudflare, Inc. (AS13335). The zone is not DNSSEC-signed, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 104.21.5.208 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.133.215 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::ac43:85d7 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3033::6815:5d0 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.5.208,172.67.133.215 ech=AEX+DQBBoAAgACAZxWF7AmwnLXssjhWBua2yLxQjeGHVO66v6rDbDLFAKwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:85d7,2606:4700:3033::6815:5d0 |
| TXT Record |
|---|
| google-site-verification=eFxUQM2-QoGAv-cQL3fZ1Kn_-3XbAmn0N8Rfbru2Cn8 |
| v=spf1 -all |
| Policy | Record (lektier-online.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.lektier-online.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; |
| www | 104.21.5.208 172.67.133.215 2606:4700:3032::ac43:85d7 2606:4700:3033::6815:5d0 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network lektier-online.dk: 104.21.5.208 172.67.133.215 2606:4700:3032::ac43:85d7 2606:4700:3033::6815:5d0 (AS13335) www.lektier-online.dk: 104.21.5.208 172.67.133.215 2606:4700:3032::ac43:85d7 2606:4700:3033::6815:5d0 (AS13335) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 0/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2416957217 |
| Primary NS (MNAME) | kim.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2019-11-27 |
| Expires | 2026-11-30 (33d) |
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).
Showing 100 of 183.
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-25 05:06:25 shown | 493ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-09 05:48:07 | 778ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-05 05:21:36 | 3088ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-01 04:53:17 | 604ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-22 07:26:37 | 1140ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-15 13:46:16 | 1311ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-01 19:07:02 | 2193ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-22 07:45:41 | 965ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-05 04:30:52 | 853ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-29 04:48:10 | 1550ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-23 18:44:35 | 3406ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-22 17:06:36 | 2730ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-04 18:08:53 | 1437ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-27 11:24:51 | 610ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-23 11:11:08 | 1117ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-22 00:47:00 | 432ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-20 19:15:18 | 518ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-20 18:29:40 | 780ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-17 12:54:26 | 4292ms | 2 NS 2 A 0 MX | 🔓 Insecure |