5405.dk is a .dk domain served by 2 nameservers (ns.dandomain.dk, ns2.dandomain.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 91.99.5.20 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by mail.5405.dk. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 91.99.5.20 | 3600s | mail.5405.dk | AS24940 | Hetzner Online GmbH | 91.98.0.0/15 | 🇩🇪 Germany | Falkenstein |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mail.5405.dk | 2a01:4f8:c014:3611::1 91.99.5.20 |
mail.5405.dk mail.5405.dk |
AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | mail.5405.dk → 91.99.5.20 |
| 🔶 Autoconfig | mail.5405.dk → 91.99.5.20 |
| TXT Record |
|---|
| google-site-verification=eCTRbVYgYir3j-Pvxcx5rCU5vvqJqBeSw8mhCOuLLIk |
| openai-domain-verification=dv-grCiVhoHT3hyNYS8Ip3jsZzf |
| v=spf1 mx -all |
| Policy | Record (5405.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx -all |
| Policy | Record (_dmarc.5405.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:postmaster@5405.dk; ruf=mailto:postmaster@5405.dk; adkim=r; aspf=r |
| Check | Result |
|---|---|
| Status | ⚠️ Invalid |
| TXT record (_mta-sts) | ✓ Found |
| HTTPS policy | ✗ Missing / invalid |
| Policy ID | 2026030901 |
| Policy MX | — |
| Status | Report address (rua) |
|---|---|
| ✓ Enabled | mailto:postmaster@5405.dk |
| Flags | Tag | Value |
|---|---|---|
| 0 | issue | letsencrypt.org |
| www | 91.99.5.20 (AS24940) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| BIMI | v=BIMI1; l=https://5405.dk/logo.svg |
| Selector | CNAME | Key |
|---|---|---|
| dkim | — | 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| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mail.5405.dk | DANE-EE · SPKI · SHA-256 | AD403044DBD27131929FB8FB309233F8… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026032901 |
| Primary NS (MNAME) | ns.dandomain.dk |
| Responsible (RNAME) | hostmaster@dandomain.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-01 06:08:33 | 737ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-31 00:28:37 | 743ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-26 15:42:25 | 987ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-25 15:04:11 | 972ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-08 06:37:09 | 2304ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-26 18:49:56 shown | 755ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 06:31:35 | 938ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 18:46:05 | 4653ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 13:14:24 | 646ms | 2 NS 1 A 1 MX | 🔒 Secure |