holkenfeldt.dk is a .dk domain served by 2 nameservers (ns.dandomain.dk, ns2.dandomain.dk). It was registered on 27 January 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 194.255.15.4 is hosted by Norlys Telco A/S (AS3308) in Denmark. Mail is handled by mx.spamfilter.io. 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 |
|---|---|---|---|---|---|---|---|
| 194.255.15.4 | 86400s | 4.0-27.15.255.194.in-addr.arpa www.dandomain.dk |
AS3308 | Norlys Telco A/S | 194.255.0.0/16 | 🇩🇰 Denmark | Horsens |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscoverredirect.webexchange.nu → 46.36.209.50 |
| TXT Record |
|---|
| v=spf1 a include:spf.dandomain.dk ~all |
| Policy | Record (holkenfeldt.dk) |
|---|---|
| ~all (soft fail) | v=spf1 a include:spf.dandomain.dk ~all |
| www | 194.255.15.4 (AS3308) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 4/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.spamfilter.io | DANE-EE · SPKI · SHA-256 | 9A25F05F2E322DABDCC9B7A06AB47A2D… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2021090100 |
| Primary NS (MNAME) | ns.dandomain.dk |
| Responsible (RNAME) | hostmaster@dandomain.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | DANDOMAIN A/S |
| Registered | 2023-01-27 |
| Expires | 2027-01-26 (95d) |
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 |
|---|---|
| appguiden.dk | DANDOMAIN A/S |
| firsttimes.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-27 00:02:43 | 522ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-01 12:47:59 | 546ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-22 20:06:15 | 16997ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-27 18:45:30 | 1242ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-26 10:59:27 shown | 1601ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 12:38:17 | 3120ms | 2 NS 1 A 1 MX | ⚠️ Bogus |
| 2026-06-23 23:02:51 | 1178ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 11:51:45 | 839ms | 2 NS 1 A 1 MX | 🔒 Secure |