thomassmart.dk is a .dk domain served by 2 nameservers (chris.ns.cloudflare.com, deborah.ns.cloudflare.com). It was registered on 30 April 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.26.197 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx01.mail.icloud.com, mx02.mail.icloud.com. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 104.21.26.197 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.168.129 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::6815:1ac5 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3033::ac43:a881 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.26.197,172.67.168.129 ech=AEX+DQBBBQAgACAVvFUir2xCVyFobLH4P241M8L25DJ3bDcN+t56ZbtYKAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:1ac5,2606:4700:3033::ac43:a881 |
| TXT Record |
|---|
| apple-domain=pVU0n7WzDDuFnYRc |
| v=spf1 include:icloud.com ~all |
| Policy | Record (thomassmart.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:icloud.com ~all |
| www | 104.21.26.197 172.67.168.129 2606:4700:3032::6815:1ac5 2606:4700:3033::ac43:a881 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network thomassmart.dk: 104.21.26.197 172.67.168.129 2606:4700:3032::6815:1ac5 2606:4700:3033::ac43:a881 (AS13335) www.thomassmart.dk: 104.21.26.197 172.67.168.129 2606:4700:3032::6815:1ac5 2606:4700:3033::ac43:a881 (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: 5/10 · 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 | 2414646205 |
| Primary NS (MNAME) | chris.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 | 2016-04-30 |
| Expires | 2031-04-30 (1653d) |
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 |
|---|---|---|---|
| 2026-10-18 01:27:14 | 875ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-10-01 05:48:42 | 748ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-29 15:29:47 shown | 1022ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-27 13:51:03 | 725ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-12 06:41:30 | 1310ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-07-16 15:31:31 | 1438ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-07-08 23:33:05 | 17504ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-18 07:30:05 | 868ms | 2 NS 1 A 4 MX | 🔒 Secure |