kronborgtand.dk is a .dk domain served by 2 nameservers (conrad.ns.cloudflare.com, virginia.ns.cloudflare.com). It was registered on 19 February 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.15.226 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by kronborgtand.dk.mx.one.com. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 104.21.15.226 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.208.39 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | kronborgtand.dk.mx.one.com | — | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::ac43:d027 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3033::6815:fe2 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.15.226,172.67.208.39 ech=AEX+DQBBuwAgACATiLHaCyO8LqD3InK4a3MFs+QBC4Z+jbA0N7mbhE7qAAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:d027,2606:4700:3033::6815:fe2 |
| TXT Record |
|---|
| brevo-code:0c6055530b347f6206fbe9c7f5660d86 |
| Policy | Record (_dmarc.kronborgtand.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:rua@dmarc.brevo.com |
| www | 104.21.15.226 172.67.208.39 2606:4700:3030::ac43:d027 2606:4700:3033::6815:fe2 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network kronborgtand.dk: 104.21.15.226 172.67.208.39 2606:4700:3030::ac43:d027 2606:4700:3033::6815:fe2 (AS13335) www.kronborgtand.dk: 104.21.15.226 172.67.208.39 2606:4700:3030::ac43:d027 2606:4700:3033::6815:fe2 (AS13335) |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~2048 bit |
| — | 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.
| 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 | 2411506617 |
| Primary NS (MNAME) | conrad.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 2025-02-19 |
| Expires | 2027-02-18 (121d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-04 15:57:24 | 1662ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-24 14:30:45 | 2499ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-19 13:13:35 | 9166ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-12 20:32:49 | 2175ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-26 18:58:41 | 1396ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-07 06:51:25 shown | 17098ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-17 22:27:16 | 9840ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-24 22:53:13 | 636ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-24 12:19:05 | 873ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 11:14:50 | 575ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-19 11:46:22 | 857ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-18 06:11:11 | 1006ms | 2 NS 2 A 1 MX | 🔓 Insecure |