1-4-u.dk is a .dk domain served by 2 nameservers (ns.web-solutions.dk, ns2.web-solutions.dk). It was registered on 18 April 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 81.7.149.249 is hosted by Sentia Denmark A/S (AS47292) in Denmark. Mail is handled by mail.web-solutions.dk. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns.web-solutions.dk | 194.99.46.231 | — | AS34766 atom86 BV |
| ns2.web-solutions.dk | 185.12.179.209 | ns2.web-solutions.dk | AS200185 Aruba S.p.A. |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 81.7.149.249 | 21600s | — | AS47292 | Sentia Denmark A/S | 81.7.148.0/22 | 🇩🇰 Denmark | Kongens Lyngby |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 21600s | mail.web-solutions.dk | 81.7.168.81 | mail.web-solutions.dk | AS47292 Sentia Denmark A/S |
| TXT Record |
|---|
| Managed by Web Solutions. Global domain registration in over 250 countries. |
| www CNAME | 1-4-u.dk (all on 1-4-u.dk) → 81.7.149.249 (AS47292) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2008067627 |
| Primary NS (MNAME) | ns.web-solutions.dk |
| Responsible (RNAME) | hostmaster@web-solutions.dk |
| Refresh | 28800s |
| Retry | 7200s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 21600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2006-04-18 |
| Expires | 2027-04-30 (195d) |
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 03:51:33 | 2156ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-08 12:37:54 | 873ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 07:16:57 | 448ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-25 08:00:54 | 550ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-25 03:22:51 | 743ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 02:28:29 | 567ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-16 00:08:09 | 1159ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-08 22:09:49 | 875ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 15:57:08 | 773ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 16:22:18 | 2603ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-20 15:37:33 | 3629ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-13 07:28:19 | 4622ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-08 05:21:41 shown | 638ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-01 08:28:30 | 2054ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-23 21:59:45 | 808ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-17 00:54:44 | 593ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-10 14:53:19 | 937ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-03 13:24:46 | 5445ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 13:47:40 | 2333ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 21:59:05 | 1156ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 01:38:16 | 1744ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-18 08:09:53 | 701ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 12:33:54 | 1147ms | 2 NS 1 A 1 MX | 🔒 Secure |