think.dk is a .dk domain served by 3 nameservers (ns1.dns.services, ns2.dns.services, ns3.dns.services). It was registered on 1 December 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 172.104.140.184 is hosted by Akamai Connected Cloud (AS63949) in Germany. Mail is handled by ASPMX.L.GOOGLE.COM, ALT1.ASPMX.L.GOOGLE.COM and 3 more. The zone is DNSSEC-signed but currently fails validation, 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 |
|---|---|---|---|---|---|---|---|
| 172.104.140.184 | 3600s | li1656-184.members.linode.com | AS63949 | Akamai Connected Cloud | 172.104.128.0/18 | 🇩🇪 Germany | Frankfurt am Main |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a01:7e01::f03c:92ff:feaa:7548 | 3600s | — | AS63949 | Akamai Connected Cloud | 2a01:7e00:0:0:0:0:0:0/30 | 🇩🇪 Germany | Frankfurt am Main |
| TXT Record |
|---|
| v=spf1 include:_spf.google.com -all |
| Policy | Record (think.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.google.com -all |
| www | 193.234.88.230 2a0f:85c1:e41::112 (AS201061) (address records, no CNAME) |
| www vs bare domain | Same network think.dk: 193.234.88.230 2a0f:85c1:e41::112 (AS201061) www.think.dk: 193.234.88.230 2a0f:85c1:e41::112 (AS201061) |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| — | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 1/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | ⚠️ Bogus |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | broken trust chain resolving 'think.dk/DNSKEY/IN': 127.0.0.1#53 |
| Field | Value |
|---|---|
| Serial | 2023030924 |
| Primary NS (MNAME) | ns1.dns.services |
| Responsible (RNAME) | post@dns.services |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 1814400s |
| Minimum (neg-cache TTL) | 7200s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1998-12-01 |
| Expires | 2029-12-31 (1169d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-08 18:38:39 | 2031ms | 3 NS 1 A 5 MX | 🔒 Secure |
| 2026-10-02 17:01:25 | 713ms | 3 NS 1 A 5 MX | 🔒 Secure |
| 2026-09-16 11:56:58 | 625ms | 3 NS 1 A 5 MX | 🔒 Secure |
| 2026-08-27 03:40:43 | 777ms | 3 NS 1 A 5 MX | 🔒 Secure |
| 2026-07-04 15:20:41 | 4674ms | 3 NS 1 A 5 MX | 🔒 Secure |
| 2026-06-20 03:23:43 shown | 761ms | 3 NS 1 A 5 MX | ⚠️ Bogus |
| 2026-06-18 03:22:32 | 939ms | 3 NS 1 A 5 MX | 🔒 Secure |