authr.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 2 February 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mail.protonmail.ch, mailsec.protonmail.ch. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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.
| TXT Record |
|---|
| anthropic-domain-verification-03p67w=ZGBDP7bxHZImEl2XOUXJQ3KEZ |
| protonmail-verification=37336b4338b6aacc1deac867a2fd3254a67ca7c6 |
| v=spf1 include:_spf.protonmail.ch ~all |
| Policy | Record (authr.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.protonmail.ch ~all |
| Policy | Record (_dmarc.authr.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine |
| www CNAME | public-authr-dk.github.io (all on github.io) |
| www vs bare domain | Same network authr.dk: 185.199.108.153 185.199.109.153 185.199.110.153 185.199.111.153 (AS54113) www.authr.dk: 185.199.108.153 185.199.109.153 185.199.110.153 185.199.111.153 (AS54113) |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
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 | 76BB66711DA416433CA890A5B2E5A053… |
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026031300 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2026-02-02 |
| Expires | 2029-02-01 (838d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 16:21:26 | 1056ms | 3 NS 4 A 2 MX | 🔒 Secure |
| 2026-10-03 22:39:29 | 883ms | 3 NS 4 A 2 MX | 🔒 Secure |
| 2026-09-24 21:10:32 | 681ms | 3 NS 4 A 2 MX | 🔒 Secure |
| 2026-09-03 01:17:31 | 802ms | 3 NS 4 A 2 MX | 🔒 Secure |
| 2026-09-01 04:04:52 | 717ms | 3 NS 4 A 2 MX | 🔒 Secure |
| 2026-08-28 00:16:06 | 883ms | 3 NS 4 A 2 MX | 🔒 Secure |
| 2026-08-17 19:10:39 | 17545ms | 3 NS 4 A 2 MX | 🔒 Secure |
| 2026-07-22 05:51:34 | 1129ms | 3 NS 4 A 2 MX | 🔒 Secure |
| 2026-07-04 22:35:41 shown | 1217ms | 3 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-22 11:10:56 | 6571ms | 3 NS 0 A 2 MX | ⚠️ Bogus |
| 2026-06-21 13:44:59 | 1187ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-16 13:51:29 | 738ms | 3 NS 0 A 2 MX | 🔒 Secure |