tsai.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 2 March 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.215.166 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx01.mail.icloud.com, mx02.mail.icloud.com. The zone is DNSSEC-signed and validates, 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 |
|---|---|---|---|---|---|---|---|
| 46.30.215.166 | 3600s | webcluster2.webpod17-cph3.one.com | AS51468 | One.com A/S | 46.30.208.0/21 | 🇩🇰 Denmark | Copenhagen |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:106:8031:185d:6d26:9896 | 3600s | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| TXT Record |
|---|
| apple-domain=y6N83ualh01o5pXF |
| v=spf1 include:icloud.com ~all |
| v=spf1 include:spf.protection.tsai.dk include:_custspf.one.com -all |
| Policy | Record (tsai.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:icloud.com ~all |
| -all (hard fail) | v=spf1 include:spf.protection.tsai.dk include:_custspf.one.com -all |
| www | 46.30.215.166 2a02:2350:5:106:8031:185d:6d26:9896 (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network tsai.dk: 46.30.215.166 2a02:2350:5:106:8031:185d:6d26:9896 (AS51468) www.tsai.dk: 46.30.215.166 2a02:2350:5:106:8031:185d:6d26:9896 (AS51468) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 5/10 · policy: ~all
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026101701 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2007-03-02 |
| Expires | 2027-03-31 (162d) |
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 |
|---|---|---|---|
| 2026-10-17 20:30:22 shown | 1731ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-30 08:25:29 | 526ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-27 21:48:57 | 780ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-21 00:48:00 | 1542ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-13 21:54:36 | 662ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-12 05:41:12 | 1589ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-26 05:12:46 | 841ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-24 05:00:30 | 1260ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-22 22:12:41 | 10070ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-24 05:35:58 | 1073ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-23 07:22:23 | 1188ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 03:41:12 | 947ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-18 06:35:04 | 3003ms | 2 NS 1 A 2 MX | 🔒 Secure |