byhornsleth.dk is a .dk domain served by 3 nameservers (ns1.e-studio.dk, ns2.e-studio.dk, ns3.e-studio.dk). It was registered on 11 July 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx1.spamfri.dk, mx2.spamfri.dk. 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 14400s | mx1.spamfri.dk | 195.242.131.16 2001:67c:564:fffd::1001 |
mx1.spamfri.dk mx1.spamfri.dk |
AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS |
| 20 | 14400s | mx2.spamfri.dk | 193.200.91.109 2001:67c:564:fffd::2001 |
mx2.spamfri.dk mx2.spamfri.dk |
AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS |
| www CNAME | byhornsleth.dk (all on byhornsleth.dk) → 91.223.235.80 (AS47527) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 7 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.spamfri.dk | DANE-EE · SPKI · SHA-256 | 884451547A03D0AC2F628D943839BAA6… |
| SMTP _25._tcp.mx2.spamfri.dk | DANE-EE · SPKI · SHA-256 | 6598C93F79B95376BB8099E9AC862167… |
| Check | Result |
|---|---|
| Validation Status | ⚠️ Bogus |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: failure |
| Field | Value |
|---|---|
| Serial | 2026061803 |
| Primary NS (MNAME) | ns1.e-studio.dk |
| Responsible (RNAME) | hostmaster@mailrelay.e-studio.dk |
| Refresh | 3600s |
| Retry | 1800s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2016-07-11 |
| Expires | 2027-07-31 (284d) |
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 |
|---|---|
| hornsleth.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-18 23:42:22 | 2038ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-27 22:57:23 | 487ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-08 16:03:41 | 563ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-26 12:22:54 | 716ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-18 23:14:31 | 6881ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-04 23:21:48 | 1586ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-28 02:50:34 shown | 2177ms | 3 NS 0 A 2 MX | ⚠️ Bogus |
| 2026-06-23 19:29:13 | 888ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-19 10:34:35 | 1490ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-16 18:26:19 | 642ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-16 18:20:22 | 930ms | 3 NS 1 A 2 MX | 🔒 Secure |