mahlkuch.dk is a .dk domain served by 3 nameservers (ns1.dns.services, ns2.dns.services, ns3.dns.services). It was registered on 23 August 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.15.72.251 is hosted by Hiper A/S (AS203953) in Denmark. Mail is handled by docnielsen.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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 185.15.72.251 | 3600s | docnielsen.dk | AS203953 | Hiper A/S | 185.15.72.0/22 | 🇩🇰 Denmark | Virum |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 86400s | docnielsen.dk | 185.15.72.251 | docnielsen.dk | AS203953 Hiper A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | docnielsen.dk → 185.15.72.251 |
| 🔶 Autoconfig | docnielsen.dk → 185.15.72.251 |
| Flags | Tag | Value |
|---|---|---|
| 0 | issue | letsencrypt.org |
| 0 | issuewild | letsencrypt.org |
| www CNAME | docnielsen.dk (all on docnielsen.dk) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.mahlkuch.dk | _acme-challenge.docnielsen.dk |
| TXT | _acme-challenge.docnielsen.dk | NQUj7e5lr_6zEE39dtmK1FNCfusMt2sj6hGEaLe_K44 |
| TXT | _acme-challenge.docnielsen.dk | bx1gN5rzvE7qBZJ46gsDr5gWPFfpQeSVDxNn5JPXNyo |
| TXT | _acme-challenge.docnielsen.dk | qH7M-ne2rXx-_uuSmbbGCEvWYQEZXDzuP4QkwLuY9_I |
| TXT | _acme-challenge.docnielsen.dk | uCj8fv6Glu4xh5i08jjkYqos8Q7iujYHIPI4xF1aORk |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2022122025 |
| Primary NS (MNAME) | ns1.dns.services |
| Responsible (RNAME) | post@dns.services |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 1814400s |
| Minimum (neg-cache TTL) | 7200s |
| Field | Value |
|---|---|
| Registrar | dns.services ApS |
| Registered | 2017-08-23 |
| Expires | 2027-08-31 (308d) |
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).
| Domain | Registrar |
|---|---|
| docnielsen.dk | dns.services ApS |
| docsmith.dk | dns.services ApS |
| nsmassage.dk | dns.services ApS |
| plejekatte.dk | dns.services ApS |
| youcubed.dk | dns.services ApS |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-26 02:55:58 | 609ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 22:21:09 | 1417ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 12:59:15 shown | 6735ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-15 20:17:46 | 6817ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-23 23:53:27 | 1134ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 20:34:24 | 1001ms | 3 NS 1 A 1 MX | 🔒 Secure |