optima-vinduer.dk is a .dk domain served by 4 nameservers (ephemera.nmugroup.se, origo.nmugroup.com, unit.nmugroup.com and 1 more). It was registered on 8 February 2010 (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, has no DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 193.183.80.13 | 3600s | redirect.nmugroup.com | AS204074 | — | — | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 3600s | . Null MX — domain accepts no email (RFC 7505) | |||
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2001:67c:1b2c::4:1 | 3600s | redirect.nmugroup.com | AS204074 | — | — | — | — |
| www CNAME | redirect.nmugroup.com (all on nmugroup.com) |
| www vs bare domain | Same network optima-vinduer.dk: 193.183.80.13 2001:67c:1b2c::4:1 (AS204074) www.optima-vinduer.dk: 193.183.80.13 2001:67c:1b2c::4:1 (AS204074) |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.optima-vinduer.dk | _acme-challenge._.optima-vinduer.dk._.redirect.nmugroup.com._.acme-challenge.nmugroup.se |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026061900 |
| Primary NS (MNAME) | origo.nmugroup.com |
| Responsible (RNAME) | dns@nmugroup.com |
| Refresh | 86400s |
| Retry | 7200s |
| Expire | 3600000s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Nordisk Media Utveckling AB |
| Registered | 2010-02-08 |
| Expires | 2027-02-28 (131d) |
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 |
|---|---|---|---|
| 2026-10-20 09:31:06 | 496ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-17 06:40:56 | 5124ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-17 06:13:47 | 1655ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-16 04:56:34 | 550ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-15 03:42:52 | 446ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-14 03:31:20 | 448ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-13 01:43:08 | 544ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-08 22:41:47 | 725ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-06 22:32:55 | 1967ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-05 19:59:42 | 2409ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-04 19:52:24 | 531ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 18:56:37 | 608ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 18:17:49 | 615ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-23 17:14:18 | 4564ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-20 22:33:22 | 654ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-19 17:51:16 | 702ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-14 19:02:38 | 1336ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-11 17:57:45 | 789ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-08 09:57:35 | 1539ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 23:51:21 | 642ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-25 05:44:57 | 1703ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-23 03:11:32 | 1864ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-22 03:01:45 | 5295ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-15 17:16:45 | 879ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-13 06:49:35 | 838ms | 4 NS 1 A 1 MX | 🔒 Secure |