symo.dk is a .dk domain served by 2 nameservers (mona.ns.cloudflare.com, porter.ns.cloudflare.com). It first appeared in the .dk zone on 13 July 2026. Its website address 104.21.9.33 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by .. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.9.33 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.141.106 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3035::6815:921 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::ac43:8d6a | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.9.33,172.67.141.106 ech=AEX+DQBBSgAgACCYgz/jFJmQmUEze1K77wzSmcRVFXo/al5hdxFrow94YQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:921,2606:4700:3035::ac43:8d6a |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (symo.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.symo.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:admin@rasmatik.dk |
| www | 104.21.9.33 172.67.141.106 2606:4700:3035::6815:921 2606:4700:3035::ac43:8d6a (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
DNS lookups: 0/10 · 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 | 2414738489 |
| Primary NS (MNAME) | mona.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-16 04:14:39 shown | 2173ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-25 18:51:39 | 620ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-09 05:12:07 | 1701ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-01 06:00:37 | 9043ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-15 16:49:16 | 1051ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-13 08:38:48 | 16631ms | 1 NS 0 A 0 MX | ❓ Unknown |