madsthomsen.dk is a .dk domain served by 2 nameservers (art.ns.cloudflare.com, chloe.ns.cloudflare.com). It was registered on 12 August 2005 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.58.159 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by madsthomsen-dk.mail.protection.outlook.com. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.58.159 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.205.102 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.40 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::6815:3a9f | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3030::ac43:cd66 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.58.159,172.67.205.102 ech=AEX+DQBBpQAgACBecrH/kQsU/0xxPEKqHyev8MVjo7KL9YhgNqVUpJ56FAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:3a9f,2606:4700:3030::ac43:cd66 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| MS=ms60403028 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (madsthomsen.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www | 104.21.58.159 172.67.205.102 2606:4700:3030::6815:3a9f 2606:4700:3030::ac43:cd66 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network madsthomsen.dk: 104.21.58.159 172.67.205.102 2606:4700:3030::6815:3a9f 2606:4700:3030::ac43:cd66 (AS13335) www.madsthomsen.dk: 104.21.58.159 172.67.205.102 2606:4700:3030::6815:3a9f 2606:4700:3030::ac43:cd66 (AS13335) |
| Wildcard | No |
DNS lookups: 1/10 · policy: -all
No problems found| 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 | 2416112423 |
| Primary NS (MNAME) | art.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 | 2005-08-12 |
| Expires | 2027-08-31 (315d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-29 02:57:30 shown | 1420ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-27 02:20:39 | 2801ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-24 03:28:45 | 1446ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-21 19:34:10 | 1623ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-25 11:26:00 | 861ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-03 02:37:19 | 1775ms | 2 NS 2 A 1 MX | ❓ Unknown |
| 2026-07-24 19:45:22 | 1539ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-21 13:50:46 | 988ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-21 10:18:07 | 1001ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-18 05:20:14 | 1269ms | 2 NS 2 A 1 MX | 🔓 Insecure |