oh3.dk is a .dk domain served by 2 nameservers (earl.ns.cloudflare.com, lola.ns.cloudflare.com). It first appeared in the .dk zone on 27 August 2026. Its website address 104.21.8.169 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by smtp.google.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 |
|---|---|---|---|---|---|---|---|
| 104.21.8.169 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.139.204 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 172.67.139.204 |
| 🔶 Autoconfig | 104.21.8.169 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3033::ac43:8bcc | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::6815:8a9 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.8.169,172.67.139.204 ech=AEX+DQBBVAAgACDoxKLAIkAaIhaNMbgHH8jgCAtYlN3rXrrImfbxmjSvWwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::ac43:8bcc,2606:4700:3035::6815:8a9 |
| TXT Record |
|---|
| v=spf1 include:_spf.google.com -all |
| Policy | Record (oh3.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.google.com -all |
| www | 104.21.8.169 172.67.139.204 2606:4700:3033::ac43:8bcc 2606:4700:3035::6815:8a9 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Selector | CNAME | Key |
|---|---|---|
| — | RSA · ~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: 1/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.oh3.dk | 4TrO3dahsY6b1Q0y1JUGmq11v-4DcH9dC99b3YT_npo |
| TXT | _acme-challenge.oh3.dk | wAuNVG_PSfvrzraEqgzDqWPoazEmiHypKN8Y1iqlwUU |
| 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 | 2413265367 |
| Primary NS (MNAME) | earl.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-19 11:25:34 | 1216ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-29 10:05:55 | 1379ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-27 08:34:15 shown | 1326ms | 2 NS 2 A 1 MX | 🔓 Insecure |