tangnet.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 27 October 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.164 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx1.onlinemail.io, mx2.onlinemail.io. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 185.21.40.164 | 3600s | prolinux1.curanet.dk | AS48854 | team.blue Denmark A/S | 185.21.40.0/22 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx1.onlinemail.io | 185.21.42.12 | mx1.onlinemail.io | AS48854 team.blue Denmark A/S |
| 20 | 3600s | mx2.onlinemail.io | 46.36.208.16 | mx2.onlinemail.io | AS48854 team.blue Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover-mf.onlinemail.io → 185.21.40.62 |
| 🔶 Autoconfig | autoconfig-mf.onlinemail.io → 185.21.40.62 |
| TXT Record |
|---|
| v=spf1 a mx include:spf.curanet.dk include:servers.mcsv.net ~all |
| Policy | Record (tangnet.dk) |
|---|---|
| ~all (soft fail) | v=spf1 a mx include:spf.curanet.dk include:servers.mcsv.net ~all |
| www | 104.21.26.39 172.67.135.91 2606:4700:3032::6815:1a27 2606:4700:3033::ac43:875b (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
DNS lookups: 6/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2024011101 |
| Primary NS (MNAME) | ns1.curanet.dk |
| Responsible (RNAME) | hostmaster@curanet.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | DANDOMAIN A/S |
| Registered | 2011-10-27 |
| Expires | 2026-10-31 (8d) |
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 |
|---|---|
| akvakultur.dk | Punktum dk A/S (direct) |
| makroalger.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-20 15:41:50 | 528ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-19 15:13:31 | 1562ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-17 13:47:14 | 4422ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-16 12:35:33 | 1193ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-02 18:42:35 | 465ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-26 17:10:52 | 721ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-12 02:00:05 | 9902ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-28 09:05:17 | 639ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-26 11:16:08 | 3741ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-19 18:59:54 | 9227ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-18 18:57:32 | 2641ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-15 04:48:42 | 3544ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-18 17:34:41 shown | 612ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 18:48:43 | 2993ms | 2 NS 1 A 2 MX | 🔒 Secure |