houbysyd.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 12 December 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 150.171.109.241 is hosted by Microsoft Corporation (AS8075) in United States. Mail is handled by mx.simply.com. The zone is DNSSEC-signed and validates, publishes a 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 150.171.109.241 | — | — | AS8075 | Microsoft Corporation | 150.171.64.0/18 | 🇺🇸 United States | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | mx.simply.com | 94.231.106.20 | mx.simply.com | AS48854 team.blue Denmark A/S |
| TXT Record |
|---|
| v=spf1 include:spf.simply.com -all |
| Policy | Record (houbysyd.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.simply.com -all |
| Policy | Record (_dmarc.houbysyd.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com; |
| www CNAME | pod8-efdscmfxhze8c7cj.z03.azurefd.net (all on azurefd.net) |
| 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 |
DNS lookups: 1/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | A9D603AF4D7ED6B9246B4B68500CD6F2… |
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | 97A3BA009F39C761BFFB6574340E8138… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026042403 |
| 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 | Simply.com A/S |
| Registered | 2017-12-12 |
| Expires | 2026-12-31 (69d) |
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 |
|---|---|---|---|
| 2026-10-04 10:22:10 | 526ms | 3 NS 1 A 0 MX | 🔓 Insecure |
| 2026-09-30 10:08:57 | 327ms | 3 NS 1 A 0 MX | 🔓 Insecure |
| 2026-09-05 00:44:56 | 374ms | 3 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-28 21:23:10 | 633ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-27 22:00:52 | 1132ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-26 02:03:54 | 1012ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 12:57:19 | 762ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 23:31:59 | 1996ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-19 01:34:01 | 1131ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 15:10:24 | 386ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 15:09:22 shown | 37661ms | 4 NS 1 A 1 MX | 🔒 Secure |