null.dk is a .dk domain served by 4 nameservers (ns1.eu.bitnames.com, ns1.us.bitnames.com, ns2.us.bitnames.com and 1 more). It was registered on 16 October 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.225.14.192 is hosted by NetActuate, Inc (AS36236) in United States. Mail is handled by smtp.skulp.net. 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 |
|---|---|---|---|---|---|---|---|
| 104.225.14.192 | 1800s | dala-ip192.sys.ntp.dev | AS36236 | NetActuate, Inc | 104.225.0.0/20 | 🇺🇸 United States | Dallas |
| 160.0.97.145 | 1800s | — | AS42 | WoodyNet, Inc. | 160.0.97.0/24 | 🇭🇰 Hong Kong | Hong Kong |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | smtp.skulp.net | 193.89.248.25 | loppen.christiania.org | AS3292 TDC Holding A/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2607:f740:100:8::1 | 86400s | — | AS36236 | NetActuate, Inc | 2607:f740:100:0:0:0:0:0/47 | 🇺🇸 United States | Dallas |
| 2620:171:5a:8010::1 | 86400s | — | AS42 | WoodyNet, Inc. | 2620:171:5a:0:0:0:0:0/48 | 🇭🇰 Hong Kong | Hong Kong |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve null.dk: 104.225.14.192 160.0.97.145 2607:f740:100:8::1 2620:171:5a:8010::1 (AS42 AS36236) (all like this)www.null.dk: no address |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.null.dk | null.dk.acme.empty.us |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026040881 |
| Primary NS (MNAME) | ns.netc.dk |
| Responsible (RNAME) | hostmaster@netc.dk |
| Refresh | 3600s |
| Retry | 1800s |
| Expire | 3628800s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1997-10-16 |
| Expires | 2034-12-31 (2997d) |
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 |
|---|---|---|---|
| 2026-10-16 13:37:40 shown | 2016ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-10-15 12:49:04 | 2102ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-10-12 11:04:57 | 5021ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-10-09 03:54:41 | 2963ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-10-08 04:27:33 | 6527ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-10-04 02:28:33 | 3754ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-10-03 02:27:26 | 1667ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-10-01 02:19:49 | 1709ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-30 04:35:20 | 4717ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-24 01:48:15 | 5395ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-21 09:20:01 | 4607ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-14 07:14:02 | 5025ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-07 05:06:24 | 6695ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-31 04:18:41 | 2928ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-29 13:01:31 | 4981ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-28 11:09:35 | 2813ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-26 09:51:01 | 3674ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-19 05:00:28 | 13195ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-18 01:20:17 | 11143ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-16 15:18:04 | 4121ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-13 07:58:27 | 6301ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-07 03:04:58 | 11117ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-07-25 14:56:59 | 3393ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-07-24 14:51:01 | 4650ms | 4 NS 2 A 1 MX | 🔒 Secure |
| 2026-07-23 13:27:42 | 24165ms | 4 NS 2 A 1 MX | 🔒 Secure |