collo.dk is a .dk domain served by 2 nameservers (ian.ns.cloudflare.com, tessa.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.33.162 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx.simply.com. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.33.162 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.164.198 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mx.simply.com | 94.231.106.20 | mx.simply.com | AS48854 team.blue Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔶 Autoconfig | maildiscover.simply.com → 94.231.108.222 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::ac43:a4c6 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3036::6815:21a2 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.33.162,172.67.164.198 ech=AEX+DQBBhQAgACCJy62yk4NXP3ahV3taUiGCca++NEhTCOlKiT+n+mOiKQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:a4c6,2606:4700:3036::6815:21a2 |
| TXT Record |
|---|
| google-site-verification=Bf6wq0t5-10-rz41FNTfF3f39jfBtrR3s0pLYko6Hpg |
| Policy | Record (_dmarc.collo.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; pct=100; rua=mailto:dmarcreports@lovable.dev |
| www | Address record (no CNAME) |
| Wildcard | No |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | 4B949F05A63FED95FC94B3A83DD70167… |
| 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 | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2416792548 |
| Primary NS (MNAME) | ian.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 09:28:17 shown | 450ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-30 05:44:20 | 981ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-29 05:36:20 | 1427ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-27 04:43:06 | 612ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-07 18:30:19 | 3133ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-02 20:36:03 | 9734ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-27 11:06:34 | 1027ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-10 04:21:14 | 1108ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-02 09:16:37 | 1590ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-02 01:29:18 | 1470ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-16 21:45:52 | 544ms | 2 NS 2 A 1 MX | 🔓 Insecure |