sundhuset.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 9 August 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 45.63.105.37 is hosted by The Constant Company, LLC (AS20473) in United States. Mail is handled by mx0.sundhuset.dk, mx1.sundhuset.dk. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 45.63.105.37 | 3600s | 45.63.105.37.vultrusercontent.com | AS20473 | The Constant Company, LLC | 45.63.64.0/18 | 🇺🇸 United States | Miami |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx0.sundhuset.dk | 45.63.105.37 | 45.63.105.37.vultrusercontent.com | AS20473 The Constant Company, LLC |
| 20 | 3600s | mx1.sundhuset.dk | 45.63.105.37 | 45.63.105.37.vultrusercontent.com | AS20473 The Constant Company, LLC |
| www | 45.63.105.37 (AS20473) (address records, no CNAME) |
| www vs bare domain | Same network |
| 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 |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026101200 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2018-08-09 |
| Expires | 2027-08-31 (309d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-22 14:17:32 shown | 648ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-13 05:42:24 | 856ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-01 12:44:39 | 872ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-12 09:06:13 | 720ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-04 12:03:36 | 2812ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 16:34:53 | 3024ms | 4 NS 1 A 2 MX | ⚠️ Bogus |