arthus.dk is a .dk domain served by 2 nameservers (addilyn.ns.cloudflare.com, marek.ns.cloudflare.com). It was registered on 17 September 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.50.204 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by route2.mx.cloudflare.net, route3.mx.cloudflare.net and 1 more. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.50.204 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.166.202 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3033::ac43:a6ca | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3034::6815:32cc | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.50.204,172.67.166.202 ech=AEX+DQBBjAAgACDVoiCn6MDfx8TmccSzioTSRNL14sYzdWpGIZGAP+LvKAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::ac43:a6ca,2606:4700:3034::6815:32cc |
| TXT Record |
|---|
| v=spf1 include:_spf.mx.cloudflare.net ~all |
| Policy | Record (arthus.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.mx.cloudflare.net ~all |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve arthus.dk: 188.114.96.1 188.114.97.1 2606:4700:3033::ac43:a6ca 2606:4700:3034::6815:32cc (AS13335) (all like this)www.arthus.dk: no address |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.u59430115.wl116.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u59430115.wl116.sendgrid.net | 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.arthus.dk | 1N_vfpKVBtXRVyA7duz7wXpJR2QQQNydJs4Xuf73brk |
| TXT | _acme-challenge.arthus.dk | X0NUhSQEGaMx_pRNakBTUOMmmYMA2vTYMsDtms_snsE |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.route1.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.route1.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.route1.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.route2.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.route2.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.route2.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| 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 | 2415137112 |
| Primary NS (MNAME) | addilyn.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Openprovider |
| Registered | 2026-09-17 |
| Expires | 2027-09-16 (331d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-28 12:51:33 | 1077ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-26 12:37:47 | 2873ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-24 04:24:57 | 1075ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-18 11:58:21 shown | 2603ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-07-21 08:15:05 | 819ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-19 19:30:28 | 733ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-18 18:40:58 | 16604ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-17 18:01:23 | 733ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-16 06:22:23 | 9704ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-11 00:57:18 | 729ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-10 00:11:27 | 750ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-08 18:00:34 | 8817ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-07 03:36:28 | 1000ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-05 00:31:21 | 627ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-04 00:28:43 | 1866ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-03 21:43:40 | 519ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-02 21:07:14 | 1786ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-22 19:13:55 | 2311ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-22 06:35:35 | 413ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-21 00:10:54 | 4382ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 18:46:34 | 495ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 12:48:16 | 1605ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 07:16:59 | 3981ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 05:57:20 | 443ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 04:08:17 | 4293ms | 0 NS 0 A 0 MX | ❓ Unknown |