bus1duborg.dk is a .dk domain served by 3 nameservers (ns1.e-studio.dk, ns2.e-studio.dk, ns3.e-studio.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 195.242.131.32 is hosted by Christian Ebsen ApS (AS62121) in Denmark. Mail is handled by mx1.spamfri.dk, mx2.spamfri.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 our latest 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 |
|---|---|---|---|---|---|---|---|
| 195.242.131.32 | 600s | web4.e-studio.dk | AS62121 | Christian Ebsen ApS | 195.242.130.0/23 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 600s | 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 | 600s | 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 |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 195.242.131.32 |
| 🔶 Autoconfig | 195.242.131.32 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 0 | 443 | cpanelemaildiscovery.cpanel.net |
| TXT Record |
|---|
| v=spf1 ip4:195.242.131.32 include:_spf.e-studio.dk ip4:195.242.130.94 +a +mx ~all |
| Policy | Record (bus1duborg.dk) |
|---|---|
| ~all (soft fail) | v=spf1 ip4:195.242.131.32 include:_spf.e-studio.dk ip4:195.242.130.94 +a +mx ~all |
| www CNAME | bus1duborg.dk (all on bus1duborg.dk) |
| 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.
DNS lookups: 3/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.bus1duborg.dk | lfLWIM1MTvUxLH-45sBCiKiQKmv2AwFYrU-arJvAJmE |
| 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 | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026090601 |
| 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 |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-02 13:06:43 shown | 401ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-18 11:51:02 | 649ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-12 01:17:35 | 1103ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-05 00:50:17 | 570ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-01 04:16:55 | 532ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-08 16:49:41 | 1371ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-29 17:44:12 | 700ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-24 16:42:55 | 860ms | 3 NS 1 A 2 MX | ⚠️ Bogus |
| 2026-06-20 17:45:14 | 826ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-16 17:45:20 | 607ms | 3 NS 1 A 2 MX | 🔒 Secure |