kkbu.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 14 December 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 13.107.246.52 is hosted by Microsoft Corporation (AS8075) in United States. Mail is handled by mx1.pub.mailpod5-cph3.one.com. 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 |
|---|---|---|---|---|---|---|---|
| 13.107.246.52 | 300s | — | AS8075 | Microsoft Corporation | 13.107.240.0/21 | 🇺🇸 United States | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mx1.pub.mailpod5-cph3.one.com | 185.164.14.54 | mx1.pub.mailpod5-cph3.one.com | AS51468 One.com A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | gomember2-fkg0ggbxftbtgge7.z03.azurefd.net → 150.171.109.200 |
| 🔶 Autoconfig | gomember2-fkg0ggbxftbtgge7.z03.azurefd.net → 150.171.109.200 |
| TXT Record |
|---|
| google-site-verification=m8RGePUQUdezmGnV2brw9Sazi61OjI5Yt7n2Ndg43pM |
| v=spf1 include:_custspf.one.com ~all |
| Policy | Record (kkbu.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_custspf.one.com ~all |
| Policy | Record (_dmarc.kkbu.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:postmaster@kkbu.dk; ruf=mailto:postmaster@kkbu.dk; sp=none; aspf=r; adkim=r |
| www CNAME | gomember2-fkg0ggbxftbtgge7.z03.azurefd.net (all on azurefd.net) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| 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 Invalid key data — receivers can't verify signatures |
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 |
|---|---|---|
| CNAME | _acme-challenge.kkbu.dk | gomember2-fkg0ggbxftbtgge7.z03.azurefd.net |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.pub.mailpod5-cph3.one.com | DANE-EE · SPKI · SHA-256 | 63EF463E384F266BA4F41EE149A2C594… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2025090402 |
| Primary NS (MNAME) | ns1.curanet.dk |
| Responsible (RNAME) | hostmaster@curanet.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2020-12-14 |
| Expires | 2026-12-31 (74d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 06:35:39 | 520ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 13:44:54 | 664ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-09 05:28:17 shown | 1733ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 05:37:12 | 1160ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-18 00:11:21 | 1252ms | 2 NS 1 A 1 MX | 🔒 Secure |