holsteenbyg.dk is a .dk domain served by 2 nameservers (ns1.siteground.net, ns2.siteground.net). It was registered on 15 September 2005 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 35.214.175.21 is hosted by Google Ireland Limited (AS43515) in The Netherlands. Mail is handled by mx10.antispam.mailspamprotection.com, mx20.antispam.mailspamprotection.com and 1 more. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 35.214.175.21 | 86400s | 21.175.214.35.bc.googleusercontent.com | AS43515 | Google Ireland Limited | 35.214.128.0/17 | 🇳🇱 The Netherlands | Groningen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 86400s | mx10.antispam.mailspamprotection.com | 34.149.79.66 | 66.79.149.34.bc.googleusercontent.com | AS396982 Google LLC |
| 20 | 86400s | mx20.antispam.mailspamprotection.com | 34.120.156.61 | 61.156.120.34.bc.googleusercontent.com | AS396982 Google LLC |
| 30 | 86400s | mx30.antispam.mailspamprotection.com | 34.111.121.216 | 216.121.111.34.bc.googleusercontent.com | AS396982 Google LLC |
| TXT Record |
|---|
| v=spf1 +a +mx +ip4:35.214.175.21 include:holsteenbyg.dk.spf.auto.dnssmarthost.net ~all |
| Policy | Record (holsteenbyg.dk) |
|---|---|
| ~all (soft fail) | v=spf1 +a +mx +ip4:35.214.175.21 include:holsteenbyg.dk.spf.auto.dnssmarthost.net ~all |
| Policy | Record (_dmarc.holsteenbyg.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; aspf=r; adkim=r; |
| www CNAME | holsteenbyg.dk (all on holsteenbyg.dk) → 35.214.175.21 (AS43515) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| default | holsteenbyg.dk.default.dkim.auto.dnssmarthost.net | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 4/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 100203 |
| Primary NS (MNAME) | ns1.siteground.net |
| Responsible (RNAME) | dnsadmin@serv01.siteground.net |
| Refresh | 86400s |
| Retry | 7200s |
| Expire | 3600000s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2005-09-15 |
| Expires | 2027-09-30 (341d) |
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 |
|---|---|---|---|
| 2026-09-30 20:00:47 | 815ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-15 16:38:07 | 1260ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-26 19:21:57 | 2707ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-13 15:33:53 | 1032ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-27 04:12:17 | 959ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-18 19:39:29 shown | 863ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-17 14:00:31 | 2169ms | 2 NS 1 A 3 MX | 🔓 Insecure |