tellstroem.dk is a .dk domain served by 2 nameservers (apollo.ns.cloudflare.com, norah.ns.cloudflare.com). It was registered on 7 February 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. The zone is DNSSEC-signed and validates, has no 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 |
|---|---|---|---|---|---|---|---|
| 104.21.1.125 | — | — | AS13335 | — | — | — | — |
| 172.67.152.62 | — | — | AS13335 | — | — | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3035::ac43:983e | — | — | AS13335 | — | — | — | — |
| 2606:4700:3037::6815:17d | — | — | AS13335 | — | — | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.1.125,172.67.152.62 ech=AEX+DQBBbgAgACAF+ScJsoMqNu3Oyfi2Xd0bvzJEGI01iW6VzCfSjaLZZwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::ac43:983e,2606:4700:3037::6815:17d |
| www | 104.21.1.125 172.67.152.62 2606:4700:3032::6815:17d 2606:4700:3033::ac43:983e (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network tellstroem.dk: 104.21.1.125 172.67.152.62 2606:4700:3032::6815:17d 2606:4700:3033::ac43:983e (AS13335) www.tellstroem.dk: 104.21.1.125 172.67.152.62 2606:4700:3032::6815:17d 2606:4700:3033::ac43:983e (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 |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2406757225 |
| Primary NS (MNAME) | apollo.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 | 2025-02-07 |
| Expires | 2027-02-06 (111d) |
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 |
|---|---|
| tellstrom.dk | Simply.com A/S |
| tidtiltek.dk | Simply.com A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-08 06:33:04 | 598ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-30 20:57:24 | 1863ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-23 18:03:26 | 661ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-17 18:45:21 | 1199ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-09 12:13:59 | 1276ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-03 23:09:11 | 519ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-15 00:42:53 | 9012ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-24 18:46:50 | 1462ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-20 18:40:22 | 952ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-28 15:56:11 | 788ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-06-18 09:15:17 shown | 1350ms | 2 NS 2 A 0 MX | 🔒 Secure |