rl-books.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 18 September 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 51.144.182.8 is hosted by Microsoft Corporation (AS8075) in The Netherlands. Mail is handled by mx1.pub.mailpod9-cph3.one.com, mx2.pub.mailpod9-cph3.one.com and 2 more. The zone is DNSSEC-signed and validates, has no 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 |
|---|---|---|---|---|---|---|---|
| 51.144.182.8 | — | — | AS8075 | Microsoft Corporation | 51.144.0.0/15 | 🇳🇱 The Netherlands | Amsterdam |
| TXT Record |
|---|
| google-site-verification=Y-fqapUdBoBYe3j7T6_GA_2s9s28WuMMn2hhQ_RMdlY |
| o5574h6isg1bce52jrtkm859c4 |
| www CNAME | rl-books.azurewebsites.net (all on azurewebsites.net) → 51.144.182.8 (AS8075) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.pub.mailpod9-cph3.one.com | DANE-EE · SPKI · SHA-256 | 5D2162F5CED0ACD2C3D63E5582045A6C… |
| SMTP _25._tcp.mx2.pub.mailpod9-cph3.one.com | DANE-EE · SPKI · SHA-256 | 5D2162F5CED0ACD2C3D63E5582045A6C… |
| SMTP _25._tcp.mx3.pub.mailpod9-cph3.one.com | DANE-EE · SPKI · SHA-256 | 5D2162F5CED0ACD2C3D63E5582045A6C… |
| SMTP _25._tcp.mx4.pub.mailpod9-cph3.one.com | DANE-EE · SPKI · SHA-256 | 5D2162F5CED0ACD2C3D63E5582045A6C… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026060401 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 2019-09-18 |
| Expires | 2027-09-30 (341d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-11 20:24:05 | 2639ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-12 16:32:24 | 881ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-05 16:38:00 | 782ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-29 01:16:28 | 2437ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-26 22:03:39 | 576ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-14 17:25:30 | 1419ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-22 14:51:26 | 4885ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-18 01:12:52 shown | 1127ms | 2 NS 1 A 4 MX | 🔒 Secure |