sheriff.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 8 April 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 13.69.228.17 is hosted by Microsoft Corporation (AS8075) in Ireland. Mail is handled by mx1.pub.mailpod11-cph3.one.com, mx2.pub.mailpod11-cph3.one.com and 2 more. The zone is DNSSEC-signed but currently fails validation, 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 |
|---|---|---|---|---|---|---|---|
| 13.69.228.17 | 43200s | — | AS8075 | Microsoft Corporation | 13.64.0.0/11 | 🇮🇪 Ireland | Dublin |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 10800s | mx1.pub.mailpod11-cph3.one.com | 104.37.34.230 | mx1.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.pub.mailpod11-cph3.one.com | 104.37.34.231 | mx2.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.pub.mailpod11-cph3.one.com | 104.37.34.232 | mx3.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx4.pub.mailpod11-cph3.one.com | 104.37.34.233 | mx4.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | data4u.azurewebsites.net → 40.112.90.244 |
| 🔶 Autoconfig | data4u.azurewebsites.net → 40.112.90.244 |
| 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 |
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.sheriff.dk | data4u.azurewebsites.net |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 00E55642F312E05CDB899B1433EDF47F… |
| SMTP _25._tcp.mx2.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 00E55642F312E05CDB899B1433EDF47F… |
| SMTP _25._tcp.mx3.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 00E55642F312E05CDB899B1433EDF47F… |
| SMTP _25._tcp.mx4.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 00E55642F312E05CDB899B1433EDF47F… |
| Check | Result |
|---|---|
| Validation Status | ⚠️ Bogus |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: insecurity proof failed |
| Field | Value |
|---|---|
| Serial | 2026030601 |
| 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 | 1999-04-08 |
| Expires | 2027-06-30 (253d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-08 06:59:37 | 622ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-30 11:53:44 | 771ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-07 16:25:26 | 1614ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-27 04:36:05 | 2017ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-05 18:13:59 | 25926ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-04 10:56:50 | 7220ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-23 18:16:48 shown | 4178ms | 2 NS 1 A 4 MX | ⚠️ Bogus |
| 2026-06-23 11:42:18 | 997ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-18 07:25:00 | 1165ms | 2 NS 1 A 4 MX | 🔒 Secure |