isvaerk.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 195.242.131.2 is hosted by Christian Ebsen ApS (AS62121) in Denmark. Mail is handled by isvaerk.dk. The zone is DNSSEC-signed and validates, 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 |
|---|---|---|---|---|---|---|---|
| 195.242.131.2 | 14400s | web.e-studio.dk | AS62121 | Christian Ebsen ApS | 195.242.130.0/23 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 14400s | isvaerk.dk | 195.242.131.2 | web.e-studio.dk | AS62121 Christian Ebsen ApS |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 195.242.131.2 |
| 🔶 Autoconfig | 195.242.131.2 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 0 | 443 | cpanelemaildiscovery.cpanel.net |
| TXT Record |
|---|
| v=spf1 ip4:195.242.131.2 include:_spf.e-studio.dk -all |
| Policy | Record (isvaerk.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:195.242.131.2 include:_spf.e-studio.dk -all |
| Policy | Record (_dmarc.isvaerk.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www CNAME | isvaerk.dk (all on isvaerk.dk) → 195.242.131.2 (AS62121) |
| 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: 1/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.isvaerk.dk | dPp6mnv8F3BFL1l2dUijds7emZszDDYCcKKBhmC_TW8 |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026051201 |
| 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 |
|---|---|---|---|
| 2026-09-25 22:49:41 | 482ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-17 18:28:27 | 582ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 07:25:30 | 470ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-14 09:12:41 | 930ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-27 03:09:23 shown | 1366ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 17:57:30 | 1050ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 22:57:27 | 643ms | 3 NS 1 A 1 MX | 🔒 Secure |