room4.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 26 October 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 86.48.72.41 is hosted by Sentia Denmark A/S (AS47292) in Denmark. Mail is handled by room4.dk.mx.one.com. 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 |
|---|---|---|---|---|---|---|---|
| 86.48.72.41 | 3600s | sumo04.solido.net | AS47292 | Sentia Denmark A/S | 86.48.72.0/21 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 46.30.213.135 |
| 🔶 Autoconfig | 46.30.213.135 |
| TXT Record |
|---|
| klaviyo-site-verification=Tu3MBi |
| Policy | Record (_dmarc.room4.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; pct=100; rua=mailto:re+lkhyaybmnqn@dmarc.postmarkapp.com; sp=none; aspf=r; |
| www | 86.48.72.41 (AS47292) (address records, no CNAME) |
| 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 |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.u16150706.wl207.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u16150706.wl207.sendgrid.net | RSA · ~1024 bit below 2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026062105 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 2009-10-26 |
| Expires | 2026-10-31 (14d) |
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).
| Domain | Registrar |
|---|---|
| gundtoft.dk | ONE.COM A/S |
| pennylane.dk | Punktum dk A/S (direct) |
| queenandkids.dk | Simply.com A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 03:11:29 | 1556ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-30 04:59:58 | 701ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-19 17:07:23 | 850ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-12 15:45:42 | 768ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-21 06:15:34 | 1309ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-15 00:31:50 shown | 6923ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-29 08:15:47 | 696ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-22 17:31:08 | 727ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-18 06:20:08 | 1005ms | 2 NS 1 A 1 MX | 🔒 Secure |