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 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 |
|---|---|---|---|---|---|---|---|
| 104.21.5.208 | 600s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.133.215 | 600s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3033::6815:5d0 | 600s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:85d7 | 600s | — | 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+DQBBqAAgACBXOJXW/N1m3KFeIRnNy+b9QFalTJNKelj6NaMpySOtUwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:5d0,2606:4700:3037::ac43:85d7 |
| 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 | 2406589209 |
| 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 (36d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 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 shown | 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 |