karstenjuul.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 1 June 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.41.114 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by karstenjuul-dk.mail.protection.outlook.com. 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 |
|---|---|---|---|---|---|---|---|
| 185.21.41.114 | 3600s | linux22.curanet.dk | AS48854 | team.blue Denmark A/S | 185.21.40.0/22 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.154.136 |
| TXT Record |
|---|
| MS=ms63103013 |
| v=spf1 include:spf.protection.outlook.com include:spf.curanet.dk -all |
| Policy | Record (karstenjuul.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:spf.curanet.dk -all |
| www CNAME | karstenjuul.dk (all on karstenjuul.dk) → 185.21.41.114 (AS48854) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 4/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2024052801 |
| Primary NS (MNAME) | ns1.curanet.dk |
| Responsible (RNAME) | hostmaster@curanet.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2004-06-01 |
| Expires | 2027-06-30 (255d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-01 06:26:07 shown | 581ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-06 22:02:53 | 35469ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 23:29:14 | 1821ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-23 23:47:49 | 1115ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-23 02:12:51 | 799ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 14:34:29 | 1855ms | 2 NS 1 A 1 MX | 🔒 Secure |