isecurity.dk is a .dk domain served by 2 nameservers (ara.ns.cloudflare.com, derek.ns.cloudflare.com). It was registered on 24 August 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.41.156 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by eu1.workspace.org. The zone is DNSSEC-signed and validates, has no 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 |
|---|---|---|---|---|---|---|---|
| 104.21.41.156 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.148.39 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | eu1.workspace.org | 193.108.130.81 | eu1.workspace.org | AS965 Webhosting Holdings LLC |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | eu1.workspace.org → 193.108.130.81 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::ac43:9427 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3032::6815:299c | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.41.156,172.67.148.39 ech=AEX+DQBBJQAgACChBjweoWU4Ti70IRuLXLBeaU3w1M01zmuwczU52O4mDwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:9427,2606:4700:3032::6815:299c |
| TXT Record |
|---|
| v=spf1 include:_spf.workspace.org -all |
| Policy | Record (isecurity.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.workspace.org -all |
| www | 104.21.41.156 172.67.148.39 2606:4700:3031::ac43:9427 2606:4700:3032::6815:299c (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network isecurity.dk: 104.21.41.156 172.67.148.39 2606:4700:3031::ac43:9427 2606:4700:3032::6815:299c (AS13335) www.isecurity.dk: 104.21.41.156 172.67.148.39 2606:4700:3031::ac43:9427 2606:4700:3032::6815:299c (AS13335) |
| 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: 1/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2415266150 |
| Primary NS (MNAME) | ara.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 | 2007-08-24 |
| Expires | 2027-08-31 (318d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 14:49:41 | 1439ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-27 01:20:55 shown | 9953ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-20 22:16:39 | 2131ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-13 20:03:47 | 1313ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-27 18:28:04 | 1394ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-22 22:54:26 | 5129ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-11 21:25:18 | 4546ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-07-31 05:15:17 | 9329ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-07-05 21:59:52 | 1346ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-06-23 07:20:08 | 2551ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-06-18 03:21:43 | 1725ms | 2 NS 2 A 1 MX | 🔒 Secure |