data4u.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 1 March 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 191.235.208.12 is hosted by Microsoft Corporation (AS8075) in Ireland. Mail is handled by mx.zoho.com, mx2.zoho.com and 1 more. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 191.235.208.12 | 43200s | — | AS8075 | Microsoft Corporation | 191.232.0.0/13 | 🇮🇪 Ireland | Dublin |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | data4u.azurewebsites.net → 40.112.90.244 |
| 🔶 Autoconfig | data4u.azurewebsites.net → 40.112.90.244 |
| TXT Record |
|---|
| v=spf1 mx include:zoho.com ~all |
| Policy | Record (data4u.dk) |
|---|---|
| ~all (soft fail) | v=spf1 mx include:zoho.com ~all |
| www CNAME | data4u.azurewebsites.net (all on azurewebsites.net) → 40.112.90.244 (AS8075) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 6/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.data4u.dk | data4u.azurewebsites.net |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026101201 |
| 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 | 1999-03-01 |
| Expires | 2027-03-31 (165d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 08:45:16 shown | 4082ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-10-07 17:44:13 | 3964ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-30 16:51:55 | 749ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-30 02:38:41 | 918ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-26 03:25:26 | 11085ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-19 07:52:55 | 1402ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-04 15:37:27 | 1208ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-27 22:27:17 | 3075ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-26 04:19:33 | 4377ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-24 01:52:59 | 1065ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-21 20:37:50 | 844ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-17 01:31:06 | 65535ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-17 01:11:07 | 2748ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-17 01:07:33 | 745ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-17 01:01:49 | 1155ms | 2 NS 1 A 3 MX | 🔒 Secure |