udbykro.dk is a .dk domain served by 2 nameservers (gordon.ns.cloudflare.com, katja.ns.cloudflare.com). It was registered on 30 January 2008 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.19.99 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aspmx4.googlemail.com. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest 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 |
|---|---|---|---|---|---|---|---|
| 104.21.19.99 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.185.189 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 70 | 300s | aspmx4.googlemail.com | 172.253.158.27 2404:6800:4003:c26::1a |
so-in-f27.1e100.net so-in-f26.1e100.net |
AS15169 Google LLC AS15169 Google LLC |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::6815:1363 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:b9bd | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.19.99,172.67.185.189 ech=AEX+DQBBrQAgACAFTCFVM9i4jmhAWlUEQGef2ORTzYBUHKK5iVA2OFt0aAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:1363,2606:4700:3037::ac43:b9bd |
| TXT Record |
|---|
| google-site-verification=knE_R4nvl-XaemNtcHsVJwRMePQi2rYzuvrfL018pW4 |
| www | 104.21.19.99 172.67.185.189 2606:4700:3032::6815:1363 2606:4700:3037::ac43:b9bd (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network udbykro.dk: 104.21.19.99 172.67.185.189 2a06:98c1:3120::1 2a06:98c1:3121::1 (AS13335) www.udbykro.dk: 104.21.19.99 172.67.185.189 2606:4700:3032::6815:1363 2606:4700:3037::ac43:b9bd (AS13335) |
| Wildcard | No |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2416780517 |
| Primary NS (MNAME) | gordon.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2008-01-30 |
| Expires | 2027-01-31 (103d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 09:05:24 shown | 1412ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-01 07:48:40 | 855ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-26 06:12:16 | 836ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-25 19:28:13 | 1345ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-09 09:31:08 | 1891ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-07 04:48:35 | 8965ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-01 01:17:07 | 826ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-20 05:31:58 | 656ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 13:13:06 | 3327ms | 2 NS 2 A 1 MX | 🔓 Insecure |