51dn.dk is a .dk domain served by 2 nameservers (ns1.siteground.net, ns2.siteground.net). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 35.214.140.204 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 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 |
|---|---|---|---|---|---|---|---|
| 35.214.140.204 | 86400s | 204.140.214.35.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 |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 35.214.140.204 |
| 🔶 Autoconfig | 35.214.140.204 |
| TXT Record |
|---|
| v=spf1 +a +mx include:51dn.dk.spf.auto.dnssmarthost.net ~all |
| Policy | Record (51dn.dk) |
|---|---|
| ~all (soft fail) | v=spf1 +a +mx include:51dn.dk.spf.auto.dnssmarthost.net ~all |
| Policy | Record (_dmarc.51dn.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; aspf=r; adkim=r; |
| www | Address record (no CNAME) |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| default | 51dn.dk.default.dkim.auto.dnssmarthost.net | RSA · ~1024 bit below 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 | 40 |
| Primary NS (MNAME) | ns1.siteground.net |
| Responsible (RNAME) | admins@siteground.com |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-01 06:45:13 shown | 598ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-20 12:33:34 | 1410ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-25 22:24:40 | 9684ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-16 19:21:48 | 1794ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-29 04:27:25 | 1059ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-27 13:50:14 | 13750ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-07-15 17:43:11 | 935ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-02 11:03:13 | 4137ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-21 00:43:08 | 574ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-16 13:14:13 | 696ms | 2 NS 1 A 3 MX | 🔓 Insecure |