britius.dk is a .dk domain served by 2 nameservers (adelaide.ns.cloudflare.com, kurt.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.91.216 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.protonmail.ch, mailsec.protonmail.ch. The zone is not DNSSEC-signed, publishes a 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| adelaide.ns.cloudflare.com | — | — | — |
| kurt.ns.cloudflare.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 104.21.91.216 | — | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.180.195 | — | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3033::ac43:b4c3 | — | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3036::6815:5bd8 | — | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.91.216,172.67.180.195 ech=AEX+DQBBdgAgACDwMdqHOich08t3ZLIr63XGzKBXh963Fm9Dq8c9t+DGZwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::ac43:b4c3,2606:4700:3036::6815:5bd8 |
| TXT Record |
|---|
| protonmail-verification=5edbaf910377cde60c00d2c7d49c377ae796fcc6 |
| v=spf1 include:_spf.protonmail.ch ~all |
| Policy | Record (britius.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.protonmail.ch ~all |
| Policy | Record (_dmarc.britius.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve britius.dk: 104.21.91.216 172.67.180.195 2606:4700:3033::6815:5bd8 2606:4700:3037::ac43:b4c3 (AS13335) (all like this)www.britius.dk: no address |
| Wildcard | No |
DNS lookups: 2/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| 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 | 2403813682 |
| Primary NS (MNAME) | adelaide.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-01 06:40:35 | 896ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-30 00:40:41 | 1010ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-23 16:47:00 | 878ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-18 09:52:27 | 1713ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-11 07:56:46 | 1680ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-24 01:07:01 | 17691ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-22 22:14:30 | 9030ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-07-08 13:05:51 | 2143ms | 2 NS 2 A 2 MX | ❓ Unknown |
| 2026-06-26 15:17:00 | 890ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-20 05:17:37 | 652ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-16 17:21:30 | 5758ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-16 17:09:53 shown | 512ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-16 17:07:46 | 2412ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-16 17:00:55 | 669ms | 2 NS 2 A 2 MX | 🔓 Insecure |