cochranebiblioteket.dk is a .dk domain served by 3 nameservers (ns1.sdu.dk, ns2.sdu.dk, ns3.sdu.dk). It was registered on 6 February 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by .. The zone is DNSSEC-signed and validates, publishes a 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 28800s | . Null MX — domain accepts no email (RFC 7505) | |||
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (cochranebiblioteket.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.cochranebiblioteket.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; rua=mailto:655b353a1f136@dmarc.centerasecurity.com; ruf=mailto:dmarc.reports@sdu.dk |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves cochranebiblioteket.dk: no address www.cochranebiblioteket.dk: no address |
| Wildcard | No |
| Denial of existence | NSEC3 · 10 iterations · 11-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 0/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2020129870 |
| Primary NS (MNAME) | ns1.sdu.dk |
| Responsible (RNAME) | dns@sdu.dk |
| Refresh | 10800s |
| Retry | 1080s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 900s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2003-02-06 |
| Expires | 2027-02-28 (123d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
Showing 100 of 120.
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-27 03:41:32 shown | 4244ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-24 01:08:17 | 19389ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-19 17:44:08 | 16669ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-16 14:18:44 | 16402ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-11 23:54:55 | 17020ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-08 11:31:18 | 18606ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-05 05:44:35 | 4288ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-30 05:12:43 | 16438ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-28 04:51:59 | 16454ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-24 03:39:00 | 4328ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-22 08:49:14 | 16436ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-19 22:13:41 | 4498ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-12 20:18:34 | 6767ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-05 19:33:06 | 6936ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-02 08:40:13 | 4329ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-29 13:34:48 | 17111ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-26 09:24:55 | 4405ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-24 00:08:04 | 815ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-21 22:56:18 | 6688ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-18 21:43:22 | 16571ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-16 11:25:36 | 6725ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-10 14:14:15 | 5276ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-06 05:33:07 | 4520ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-28 10:53:16 | 4511ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-27 08:17:51 | 4503ms | 3 NS 0 A 1 MX | 🔒 Secure |