masterclass-fysik-kemi.dk is a .dk domain served by 3 nameservers (mimer.deic.dk, ns-soa.darenet.dk, orion.i2.dk). It was registered on 18 June 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 81.27.222.45 is hosted by GlobalConnect A/S (AS42525) in Denmark. 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 |
|---|---|---|---|---|---|---|---|
| 81.27.222.45 | 3600s | d81-27-222-45cm.dcmediahosting.com | AS42525 | GlobalConnect A/S | 81.27.220.0/22 | 🇩🇰 Denmark | Odense |
| www | 81.27.222.45 (AS42525) (address records, no CNAME) |
| www vs bare domain | Same network masterclass-fysik-kemi.dk: 81.27.222.45 (AS42525) www.masterclass-fysik-kemi.dk: 81.27.222.45 (AS42525) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| 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 | fully validated |
| Field | Value |
|---|---|
| Serial | 1792691539 |
| Primary NS (MNAME) | mimer.deic.dk |
| Responsible (RNAME) | dns@support.i2.dk |
| Refresh | 16384s |
| Retry | 2048s |
| Expire | 2097152s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2009-06-18 |
| Expires | 2027-06-30 (247d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-23 15:22:51 shown | 415ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-22 10:38:59 | 930ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-20 14:33:17 | 1160ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-19 10:32:33 | 2179ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-17 09:14:48 | 490ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-16 08:42:51 | 416ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-15 06:52:16 | 1087ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-12 02:42:40 | 597ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-10 23:34:29 | 1165ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-09 19:53:18 | 379ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-08 19:14:57 | 5257ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-07 19:12:04 | 509ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-05 20:43:04 | 3079ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-04 20:38:04 | 465ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-03 20:33:10 | 1690ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-02 20:16:39 | 2864ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-01 20:13:42 | 354ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-29 20:03:06 | 2105ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-28 19:48:54 | 1504ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-27 19:43:00 | 2844ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-26 19:16:46 | 1638ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-25 18:56:34 | 2277ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-23 17:51:16 | 1588ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-22 13:23:15 | 2144ms | 3 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-15 12:15:06 | 4813ms | 3 NS 1 A 0 MX | 🔒 Secure |