renseri-østerbro.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 8 May 2014 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.4 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mail.xn--renseri-sterbro-dub.dk, backup-mx.zitcom.dk. 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 |
|---|---|---|---|---|---|---|---|
| 185.21.40.4 | 3600s | web28.123hotel.dk | AS48854 | team.blue Denmark A/S | 185.21.40.0/22 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | xn--renseri-sterbro-dub.dk → 185.21.40.4 |
| 🔶 Autoconfig | xn--renseri-sterbro-dub.dk → 185.21.40.4 |
| TXT Record |
|---|
| v=spf1 a include:spf.curanet.dk ~all |
| Policy | Record (renseri-østerbro.dk) |
|---|---|
| ~all (soft fail) | v=spf1 a include:spf.curanet.dk ~all |
| www CNAME | xn--renseri-sterbro-dub.dk (all on xn--renseri-sterbro-dub.dk) → 185.21.40.4 (AS48854) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 4/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.renseri-østerbro.dk | xn--renseri-sterbro-dub.dk |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026092001 |
| 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 | Punktum dk A/S (direct) |
| Registered | 2014-05-08 |
| Expires | 2027-05-31 (221d) |
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 |
|---|---|---|---|
| 2026-10-09 14:23:35 shown | 1197ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-24 03:06:31 | 950ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-01 18:56:15 | 720ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-28 03:39:00 | 899ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-28 17:03:39 | 1913ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-24 08:50:00 | 924ms | 2 NS 1 A 2 MX | ⚠️ Bogus |
| 2026-06-24 06:26:37 | 3899ms | 2 NS 1 A 2 MX | ⚠️ Bogus |
| 2026-06-22 12:03:42 | 946ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 20:05:24 | 792ms | 2 NS 1 A 2 MX | 🔒 Secure |