isbjoern.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 25 January 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 20.82.12.44 is hosted by Microsoft Corporation (AS8075) in The Netherlands. Mail is handled by mx1.spamfri.dk, mx2.spamfri.dk and 1 more. The zone is not DNSSEC-signed, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 20.82.12.44 | — | — | AS8075 | Microsoft Corporation | 20.64.0.0/10 | 🇳🇱 The Netherlands | Amsterdam |
| TXT Record |
|---|
| 44wljc3d98lb1ycs23h3y1m5xtc9tt7v |
| v=spf1 ip4:195.242.131.32 include:_spf.e-studio.dk -all |
| Policy | Record (isbjoern.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:195.242.131.32 include:_spf.e-studio.dk -all |
| Policy | Record (_dmarc.isbjoern.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www CNAME | isbjoern.dk (all on isbjoern.dk) → 20.82.12.44 (AS8075) |
| www vs bare domain | Same network |
| Wildcard | No |
| 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.
DNS lookups: 1/10 · policy: -all
No problems found| 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… |
| SMTP _25._tcp.mx3.spamfri.dk | DANE-EE · SPKI · SHA-256 | BBFB0694919290E5BC9D6E2C6F47D846… |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026060603 |
| 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 | 2010-01-25 |
| Expires | 2027-01-31 (104d) |
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 |
|---|---|
| gallerikobaltowawrona.dk | Punktum dk A/S (direct) |
| snebamse.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 17:48:26 | 466ms | 3 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-30 15:41:32 | 570ms | 3 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-24 23:40:14 | 10621ms | 3 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-13 06:45:38 | 600ms | 3 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-04 03:50:49 | 657ms | 3 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-01 11:25:34 | 607ms | 3 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-09 05:31:36 | 1036ms | 3 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-21 12:30:12 | 727ms | 3 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-17 14:41:57 shown | 1676ms | 3 NS 1 A 3 MX | 🔓 Insecure |