linkguru.dk is a .dk domain served by 2 nameservers (greg.ns.cloudflare.com, maya.ns.cloudflare.com). It was registered on 29 July 2014 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.49.74 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx.simply.com. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.49.74 | 600s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.160.167 | 600s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 600s | mx.simply.com | 94.231.106.20 | mx.simply.com | AS48854 team.blue Denmark A/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::ac43:a0a7 | 600s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3032::6815:314a | 600s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.49.74,172.67.160.167 ech=AEX+DQBBRgAgACCgfwK0EK95Hpu+kmgHpw1E6ny4VWq8l0C6keq6rdhTXwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:a0a7,2606:4700:3032::6815:314a |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | maildiscover.simply.com |
| www | 104.21.49.74 172.67.160.167 2606:4700:3031::6815:314a 2606:4700:3035::ac43:a0a7 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network linkguru.dk: 104.21.49.74 172.67.160.167 2606:4700:3031::6815:314a 2606:4700:3035::ac43:a0a7 (AS13335) www.linkguru.dk: 104.21.49.74 172.67.160.167 2606:4700:3031::6815:314a 2606:4700:3035::ac43:a0a7 (AS13335) |
| Wildcard | No |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | 97A3BA009F39C761BFFB6574340E8138… |
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | A9D603AF4D7ED6B9246B4B68500CD6F2… |
| 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 | 2407403849 |
| Primary NS (MNAME) | greg.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2014-07-29 |
| Expires | 2027-07-31 (285d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-16 15:21:25 | 2066ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-29 18:39:09 | 585ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-20 13:40:19 | 685ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-18 10:53:31 | 1311ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-26 20:05:47 | 664ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-18 10:22:21 | 1037ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-21 11:32:31 | 881ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-02 10:46:21 | 941ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-24 06:59:38 | 840ms | 2 NS 2 A 1 MX | ❓ Unknown |
| 2026-06-23 07:27:23 | 1016ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-23 05:34:31 shown | 1177ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-20 15:54:44 | 677ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 15:10:53 | 777ms | 2 NS 2 A 1 MX | ❓ Unknown |