optihjem.dk is a .dk domain served by 2 nameservers (nicole.ns.cloudflare.com, valentin.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.70.137 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 |
|---|---|---|---|---|---|---|---|
| 104.21.70.137 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.223.209 | 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 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::6815:4689 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3033::ac43:dfd1 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.70.137,172.67.223.209 ech=AEX+DQBBzAAgACDuL1U47DdoVdkUXB7C9EoHNR/ZnpfvKlAFlQbiOxAaFQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:4689,2606:4700:3033::ac43:dfd1 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | maildiscover.simply.com |
| TXT Record |
|---|
| google-site-verification=uf2zv34OXtkohE9cUbRJi-twkdnrp89FqUp_a41wvAw |
| v=spf1 include:spf.simply.com -all |
| Policy | Record (optihjem.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.simply.com -all |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve optihjem.dk: 104.21.70.137 172.67.223.209 2606:4700:3032::6815:4689 2606:4700:3033::ac43:dfd1 (AS13335) (all like this)www.optihjem.dk: no address |
| Wildcard | No |
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 | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2405390991 |
| Primary NS (MNAME) | nicole.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 11:59:56 | 528ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-27 01:50:24 | 9482ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-23 17:42:25 | 1343ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-01 00:53:40 | 9583ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-25 04:18:05 | 2487ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-25 20:49:22 | 9976ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-19 09:24:21 | 16966ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-20 15:53:03 shown | 1006ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 14:19:50 | 1799ms | 2 NS 2 A 1 MX | 🔓 Insecure |