esrumsystem.dk is a .dk domain served by 3 nameservers (ns5.chosting.dk, ns6.chosting.dk, ns7.chosting.dk). It was registered on 30 May 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 178.20.216.125 is hosted by Atea A/S (AS21060) in Denmark. Mail is handled by esrumsystem.dk. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns5.chosting.dk | — | — | — |
| ns6.chosting.dk | — | — | — |
| ns7.chosting.dk | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 178.20.216.125 | — | server17.chosting.dk | AS21060 | Atea A/S | 178.20.216.0/23 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | — | esrumsystem.dk | 178.20.216.125 | server17.chosting.dk | AS21060 Atea A/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a01:7cc0:101:ffff::1:13 | — | — | AS21060 | Atea A/S | 2a01:7cc0:100:0:0:0:0:0/40 | 🇩🇰 Denmark | — |
| TXT Record |
|---|
| v=spf1 ip4:178.20.216.125 include:spf.chosting.dk ip4:178.20.216.8 +a +mx +ip4:91.215.163.244 +ip4:91.215.163.252 +ip4:91.215.163.252 ~all |
| Policy | Record (esrumsystem.dk) |
|---|---|
| ~all (soft fail) | v=spf1 ip4:178.20.216.125 include:spf.chosting.dk ip4:178.20.216.8 +a +mx +ip4:91.215.163.244 +ip4:91.215.163.252 +ip4:91.215.163.252 ~all |
| Policy | Record (_dmarc.esrumsystem.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1;p=none;sp=none;adkim=r;aspf=r;pct=100;fo=0;rf=afrf;ri=86400 |
| www CNAME | esrumsystem.dk (all on esrumsystem.dk) |
| www vs bare domain | Same network esrumsystem.dk: 178.20.216.125 2a01:7cc0:101:ffff::1:13 (AS21060) www.esrumsystem.dk: 178.20.216.125 2a01:7cc0:101:ffff::1:13 (AS21060) |
| 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: 5/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026052600 |
| Primary NS (MNAME) | ns5.chosting.dk |
| Responsible (RNAME) | logs@chosting.dk |
| Refresh | 3600s |
| Retry | 1800s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2017-05-30 |
| Expires | 2032-05-31 (2053d) |
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 |
|---|---|
| frelste.dk | Punktum dk A/S (direct) |
| nationalnatur.dk | FIONIA IT ApS |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-11 05:37:00 | 699ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-04 03:52:23 | 839ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 06:17:18 | 832ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-11 02:32:03 | 980ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-27 02:29:10 | 2091ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-22 17:49:24 | 847ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 08:24:58 | 443ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 08:24:58 shown | 384ms | 3 NS 1 A 1 MX | 🔒 Secure |