operahus.dk is a .dk domain served by 4 nameservers (ns.web-solutions.dk, ns2.web-solutions.dk, ns3.web-solutions.eu and 1 more). It was registered on 31 August 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 81.7.149.249 is hosted by Sentia Denmark A/S (AS47292) in Denmark. The zone is DNSSEC-signed and validates, publishes a 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 81.7.149.249 | 21600s | — | AS47292 | Sentia Denmark A/S | 81.7.148.0/22 | 🇩🇰 Denmark | Kongens Lyngby |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (operahus.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.operahus.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; aspf=s; adkim=s; |
| www CNAME | operahus.dk (all on operahus.dk) → 81.7.149.249 (AS47292) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| 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 | fully validated |
| Field | Value |
|---|---|
| Serial | 2006026135 |
| Primary NS (MNAME) | ns.web-solutions.dk |
| Responsible (RNAME) | hostmaster@web-solutions.dk |
| Refresh | 28800s |
| Retry | 7200s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 21600s |
| Field | Value |
|---|---|
| Registrar | WEB SOLUTIONS A/S |
| Registered | 2000-08-31 |
| Expires | 2027-09-30 (346d) |
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 |
|---|---|---|---|
| 2026-10-16 03:00:51 | 675ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-08 11:00:03 | 2234ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-02 02:14:38 | 1429ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-30 02:04:08 | 453ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-27 07:29:28 | 945ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-24 05:54:36 | 626ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-20 06:32:35 | 939ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-13 04:22:59 | 1719ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-03 16:11:34 | 1027ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-01 03:34:04 | 2018ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-27 19:02:28 | 415ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-20 20:26:03 | 769ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-13 07:18:13 | 16601ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-06 10:48:47 | 1670ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-23 02:28:39 | 941ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-17 15:08:32 | 16507ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-10 01:20:53 | 752ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-03 10:04:01 | 1874ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-25 19:36:54 shown | 739ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-23 08:56:38 | 1082ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 22:32:26 | 613ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-19 08:40:13 | 4430ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-17 15:36:13 | 699ms | 4 NS 1 A 0 MX | 🔒 Secure |