herku.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx01.mail.icloud.com, mx02.mail.icloud.com. The zone is DNSSEC-signed and validates, has no 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.
| TXT Record |
|---|
| apple-domain=M4MjVqEtqU7E2eDd |
| v=spf1 redirect=icloud.com |
| Policy | Record (herku.dk) |
|---|---|
| redirect=icloud.com | v=spf1 redirect=icloud.com |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves herku.dk: no address www.herku.dk: no address |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 5/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2021091502 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 13:16:56 | 391ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-10-02 00:25:22 | 401ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-07-03 01:10:59 | 947ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-27 22:01:18 shown | 1461ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-24 05:21:06 | 2320ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-23 03:09:49 | 924ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 11:23:33 | 2853ms | 4 NS 0 A 2 MX | 🔒 Secure |