insight.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 2.109.167.154 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by mail.insight.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 |
|---|---|---|---|---|---|---|---|
| 2.109.167.154 | 600s | — | AS3292 | TDC Holding A/S | 2.108.0.0/15 | 🇩🇰 Denmark | Humlebæk |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 15 | 600s | mail.insight.dk | 81.187.219.134 81.187.219.134 |
134.128-159.219.187.81.in-addr.arpa mail.insight.dk |
AS20712 Andrews & Arnold Ltd AS20712 Andrews & Arnold Ltd |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | mail.insight.dk → 81.187.219.134 |
| 🔶 Autoconfig | mail.insight.dk → 81.187.219.134 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 1 | 443 | mail.insight.dk |
| _imaps._tcp | 10 | 1 | 993 | mail.insight.dk |
| TXT Record |
|---|
| v=spf1 mx a:mail.insight.dk ~all |
| Policy | Record (insight.dk) |
|---|---|
| ~all (soft fail) | v=spf1 mx a:mail.insight.dk ~all |
| Policy | Record (_dmarc.insight.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; ruf=mailto:admin@insight.dk; adkim=s; aspf=s |
| www | 152.115.132.250 (AS31027) (address records, no CNAME) |
| www vs bare domain | Different networks (all like this) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| dkim | — | 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: 2/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mail.insight.dk | DANE-TA · SPKI · SHA-256 | 0B9FA5A59EED715C26C1020C711B4F6E… |
| SMTP _25._tcp.mail.insight.dk | DANE-TA · SPKI · SHA-256 | 762195C225586EE6C0237456E2107DC5… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026071901 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 09:35:44 | 665ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 14:35:53 | 1049ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-23 13:56:49 | 852ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-21 02:01:41 | 1520ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-20 06:44:05 | 18196ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-20 10:37:25 shown | 971ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-08 20:08:38 | 905ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-29 19:50:07 | 830ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-27 10:44:07 | 692ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-21 15:58:12 | 3355ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 13:35:23 | 2186ms | 2 NS 1 A 2 MX | 🔒 Secure |