renserioesterbro.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It 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.renserioesterbro.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 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 |
|---|---|---|---|---|---|---|---|
| 185.21.40.4 | 3600s | web28.123hotel.dk | AS48854 | team.blue Denmark A/S | 185.21.40.0/22 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | renserioesterbro.dk → 185.21.40.4 |
| 🔶 Autoconfig | renserioesterbro.dk → 185.21.40.4 |
| TXT Record |
|---|
| v=spf1 a include:spf.curanet.dk ~all |
| Policy | Record (renserioesterbro.dk) |
|---|---|
| ~all (soft fail) | v=spf1 a include:spf.curanet.dk ~all |
| www CNAME | renserioesterbro.dk (all on renserioesterbro.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.renserioesterbro.dk | renserioesterbro.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 |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 10:30:25 | 472ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-01 04:14:29 | 590ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-24 00:41:05 shown | 1199ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-15 15:26:34 | 4563ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-28 21:50:47 | 718ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-25 18:18:36 | 783ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-23 13:13:09 | 3253ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-23 02:44:45 | 921ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-22 08:16:36 | 621ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 23:06:13 | 1288ms | 2 NS 1 A 2 MX | 🔒 Secure |