10c.dk is a .dk domain served by 2 nameservers (james.ns.cloudflare.com, mary.ns.cloudflare.com). It was registered on 26 May 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.74.92 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.musikbaren.dk. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.74.92 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.201.17 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | mail.musikbaren.dk | 152.228.141.29 2001:41d0:404:200::7276 |
mail.musikbaren.dk vps-03f60573.vps.ovh.net |
AS16276 OVH SAS AS16276 OVH SAS |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3033::ac43:c911 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000::/42 | — | — |
| 2606:4700:3037::6815:4a5c | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000::/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=188.114.96.1,188.114.97.1 ech=AEX+DQBB/QAgACDOd4OjIKhHuX5odNlGdKSapSV3boeMtO2vuvg+KTUyFAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2a06:98c1:3120::1,2a06:98c1:3121::1 |
| TXT Record |
|---|
| v=spf1 ip4:152.228.141.29 include:10c.dk -all |
| Policy | Record (10c.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:152.228.141.29 include:10c.dk -all |
| Policy | Record (_dmarc.10c.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:cloudflare@hrmf.net |
| www | 104.21.74.92 172.67.201.17 2606:4700:3033::ac43:c911 2606:4700:3037::6815:4a5c (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 2/10 · policy: -all
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.10c.dk | NGPtbxzfRXnGq7WsZANk1yHyFNGrHCkTu8jOMrStAQQ |
| TXT | _acme-challenge.10c.dk | q2SONwhJxIfSWf6fKrElUyj3-SmGMdtDHQrtcOD9gJg |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Key type | Algorithm | Public key |
|---|---|---|
| KSK | ECDSA P-256/SHA-256 | mdsswUyr3DPW132mOi8V9xESWE8jTo0dxCjjnopK… |
| ZSK | ECDSA P-256/SHA-256 | oJMRESz5E4gYzS/q6XDrvU1qMPYIjCWzJaOau8XN… |
| Field | Value |
|---|---|
| Serial | 2412349202 |
| Primary NS (MNAME) | james.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 | 2003-05-26 |
| Expires | 2028-05-31 (592d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 17:21:46 | 661ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-29 16:24:21 | 694ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-26 01:45:11 | 966ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-25 01:34:49 | 805ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-13 19:53:24 | 912ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-08 05:38:20 | 2913ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-01 03:09:03 | 761ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-27 16:41:39 | 854ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-26 05:26:40 | 725ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-22 08:22:46 | 1433ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-18 00:13:03 | 3020ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-16 19:35:38 shown | 1646ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-16 00:34:51 | 5171ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-14 22:11:45 | 1218ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-09 10:10:52 | 1498ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-07-15 18:14:45 | 1268ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-07-12 05:18:13 | 1082ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-06-27 22:43:01 | 2480ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-06-25 02:09:50 | 1879ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-06-24 16:26:43 | 6527ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-06-23 21:51:02 | 1157ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-23 16:38:41 | 1611ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-06-21 17:11:03 | 1180ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-16 12:33:33 | 1556ms | 2 NS 2 A 1 MX | 🔒 Secure |