kalundborg.dk is a .dk domain served by 2 nameservers (ns.dandomain.dk, ns2.dandomain.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 172.232.147.252 is hosted by Akamai Connected Cloud (AS63949) in Sweden. Mail is handled by kalundborg-dk.n-v1.mx.microsoft. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 172.232.147.252 | 3600s | 172-232-147-252.ip.linodeusercontent.com | AS63949 | Akamai Connected Cloud | 172.232.128.0/17 | 🇸🇪 Sweden | Stockholm |
| 172.233.57.17 | 3600s | 172-233-57-17.ip.linodeusercontent.com | AS63949 | Akamai Connected Cloud | 172.233.0.0/16 | 🇳🇱 The Netherlands | Amsterdam |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.8 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2600:3c09::f03c:94ff:fed1:f1bb | 3600s | — | AS63949 | Akamai Connected Cloud | 2600:3c08:0:0:0:0:0:0/30 | 🇸🇪 Sweden | Stockholm |
| 2600:3c0e::f03c:94ff:fed1:4ea | 3600s | — | AS63949 | Akamai Connected Cloud | 2600:3c0e:0:0:0:0:0:0/32 | 🇳🇱 The Netherlands | Amsterdam |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| _uscdum2gbz46jcc7lgi82xw1wpphkrw |
| 2xr6jm8rv4m9ljpp0ncm0609nqwz83pr |
| abf615a1-e208-4baf-a54b-4afe807a24fe |
| apple-domain-verification=KxUpZ6ZdKZCOMokl |
| apple-domain-verification=x36KDLhJeD75XUqt |
| google-site-verification=X_vTn_fRHiSVhIO5fiKvrii_rTpcqM-zKoAjr8B5Af4 |
| infoblox-domain-mastery=95fd32caf2ad695070269d4be8ca9a68553f3732925013edc5c26e5759a01b1ca3 |
| ms-domain-verification=a759c564-eccd-46c2-ae44-2e818173be20 |
| ms=ms45962276 |
| Q0LyoXKqKznliXmQhvuNRT6XadhPMOvwyAvaZNl6e+lNZtL85LVMJJs8i7oJjoEP4NLFAFSJes/sxoU22khxMA== |
| rxP/jzHmUw3ArqxIHrJfr2U7gSLyXe9bCWP0nXHNXYaXww+bkRWj+LtN7wSqLxfHLAxEH5sjtXkNzXrF1IeFzA== |
| v=spf1 include:_spf22860.spfprotect.com -all |
| Policy | Record (kalundborg.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf22860.spfprotect.com -all |
| Policy | Record (_dmarc.kalundborg.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; pct=100; rua=mailto:64995bbde9629@dmarc.centerasecurity.com; ruf=mailto:dmarc@kalundborg.dk; |
| www CNAME | www.kalundborg.dk.edgekey.net (all on edgekey.net) |
| www vs bare domain | Different networks kalundborg.dk: 172.232.147.252 172.233.57.17 2600:3c09::f03c:94ff:fed1:f1bb 2600:3c0e::f03c:94ff:fed1:4ea (AS63949) (all like this)www.kalundborg.dk: 2.23.172.107 2.23.172.179 2a02:26f0:3b::5f64:9bba 2a02:26f0:3b::5f64:9bc3 (AS20940) |
| Wildcard | No |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~1024 bit below 2048 bit |
| k1 | dkim.mcsv.net | RSA · ~1024 bit below 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| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.kalundborg.dk | _acme-challenge.9ac01310829aae848a5b299bb9e38ac9fdd3e0d949697c77.upcloudlb.com |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.kalundborg-dk.n-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | A6C267923B26A4A9617EDA73D8DB4FBC… |
| SMTP _25._tcp.kalundborg-dk.n-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | 38D895F5105BC2545822C17A2444F4B0… |
| SMTP _25._tcp.kalundborg-dk.n-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | 133086C7B822371A4A3304F1661A7880… |
| SMTP _25._tcp.kalundborg-dk.n-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | 6EBFF927297A5B3AAF5EAE672252C36A… |
| SMTP _25._tcp.kalundborg-dk.n-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | C495D9E40F7E625BE22F83CC64305182… |
| SMTP _25._tcp.kalundborg-dk.n-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | 5F88694615E4C61686E106B84C3338C6… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026070101 |
| Primary NS (MNAME) | ns.dandomain.dk |
| Responsible (RNAME) | hostmaster@dandomain.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 03:20:39 | 749ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-04 14:25:53 | 846ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-03 13:10:21 | 728ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-26 19:24:46 | 1910ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-25 22:56:55 | 770ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-14 09:09:32 | 1087ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-07-07 06:15:36 | 1910ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-07-01 12:54:00 shown | 738ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-06-26 20:19:03 | 2112ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-06-18 01:00:55 | 1381ms | 2 NS 2 A 1 MX | 🔒 Secure |