biblioteksystem.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 2 December 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 195.47.247.18 is hosted by One.com A/S (AS51468). Mail is handled by mx1.pub.mailpod11-cph3.one.com, mx2.pub.mailpod11-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 our latest 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 |
|---|---|---|---|---|---|---|---|
| 195.47.247.18 | 3600s | one.com.webforward.g1i.one | AS51468 | One.com A/S | 195.47.247.0/24 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 10800s | mx1.pub.mailpod11-cph3.one.com | 104.37.34.230 | mx1.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.pub.mailpod11-cph3.one.com | 104.37.34.231 | mx2.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.pub.mailpod11-cph3.one.com | 104.37.34.232 | mx3.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx4.pub.mailpod11-cph3.one.com | 104.37.34.233 | mx4.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 195.47.247.18 |
| 🔶 Autoconfig | 195.47.247.18 |
| www | Exists, no address |
| www vs bare domain | Same network biblioteksystem.dk: 195.47.247.18 (AS51468) www.biblioteksystem.dk: 2a02:2350:5:111:8023:e264:525b:b48 (AS51468) |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 24F573980561755185B794745411B05D… |
| SMTP _25._tcp.mx2.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 24F573980561755185B794745411B05D… |
| SMTP _25._tcp.mx3.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 24F573980561755185B794745411B05D… |
| SMTP _25._tcp.mx4.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 24F573980561755185B794745411B05D… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026101701 |
| 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 | 2018-12-02 |
| Expires | 2026-12-31 (69d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-18 04:11:32 shown | 1798ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-17 03:57:37 | 460ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-12 15:29:17 | 495ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-25 02:23:22 | 776ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-04 13:59:55 | 632ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-26 18:53:59 | 807ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-01 07:35:51 | 7166ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-27 08:16:33 | 863ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-20 22:15:31 | 4852ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-24 02:58:11 | 965ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-23 07:13:21 | 1172ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 13:56:18 | 2557ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-16 14:28:28 | 748ms | 2 NS 1 A 4 MX | 🔒 Secure |