openlib.dk is a .dk domain served by 2 nameservers (sec1.rcode0.net, sec2.rcode0.net). It was registered on 7 November 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. 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.
| Flags | Tag | Value |
|---|---|---|
| 0 | iodef | mailto:domains@dbc.dk |
| 0 | issue | letsencrypt.org |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves openlib.dk: no address www.openlib.dk: no address |
| 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 |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2022033361 |
| Primary NS (MNAME) | ns.dbc.dk |
| Responsible (RNAME) | domains@dbc.dk |
| Refresh | 28800s |
| Retry | 7200s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | DBC DIGITAL A/S |
| Registered | 2007-11-07 |
| Expires | 2026-11-30 (44d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 12:47:56 | 1144ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-09 00:31:27 | 486ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-08 00:29:55 | 456ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-04 00:10:21 | 468ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-29 23:54:18 | 483ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-28 23:40:39 | 483ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-24 22:40:26 | 456ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-21 10:41:55 | 495ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-20 01:36:12 shown | 488ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-16 07:47:35 | 1481ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-09 06:17:15 | 524ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-08 00:09:13 | 360ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-04 09:58:24 | 391ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-02 14:48:32 | 939ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-29 10:44:47 | 1034ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-25 23:03:20 | 1483ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-24 15:33:41 | 594ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-20 07:50:12 | 3585ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-16 17:05:27 | 8535ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-15 10:25:09 | 620ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-12 21:50:59 | 2513ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-10 05:23:35 | 628ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-06 22:50:58 | 618ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-01 09:09:10 | 8549ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-07-29 22:04:18 | 816ms | 2 NS 0 A 0 MX | 🔒 Secure |