holbaektursejlerklub.dk is a .dk domain served by 3 nameservers (ns1.ravn-hjemmesider.dk, ns2.ravn-hjemmesider.dk, ns3.ravn-hjemmesider.dk). It was registered on 19 March 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.46 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx1.scannet.dk, mx2.scannet.dk. The zone is not DNSSEC-signed, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 185.21.40.46 | 14400s | vm1440.enterprisecloud.nu | AS48854 | team.blue Denmark A/S | 185.21.40.0/22 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 600s | mx1.scannet.dk | 46.36.210.150 | mx1.scannet.dk | AS48854 team.blue Denmark A/S |
| 20 | 600s | mx2.scannet.dk | 94.231.106.222 | mx2.scannet.dk | AS48854 team.blue Denmark A/S |
| TXT Record |
|---|
| v=spf1 +a +mx +ip4:144.76.157.210 include:spf.azehosting.net include:spf.scannet.dk include:web.shared.mysmtp.com ~all |
| Policy | Record (holbaektursejlerklub.dk) |
|---|---|
| ~all (soft fail) | v=spf1 +a +mx +ip4:144.76.157.210 include:spf.azehosting.net include:spf.scannet.dk include:web.shared.mysmtp.com ~all |
| Policy | Record (_dmarc.holbaektursejlerklub.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:webmaster@holbaektursejlerklub.dk; |
| www | 185.21.40.46 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~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.
DNS lookups: 11/10 · policy: ~all
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.holbaektursejlerklub.dk | BGWy4aZUUSDIIMgGSOgz4TIq74GR97m7BRxQbYSCRDs |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026100503 |
| Primary NS (MNAME) | ns1.ravn-hjemmesider.dk |
| Responsible (RNAME) | asger@ravn-hjemmesider.dk |
| Refresh | 3600s |
| Retry | 1800s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2003-03-19 |
| Expires | 2027-03-31 (161d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-06 03:12:44 shown | 589ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-29 02:34:09 | 1935ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-26 01:35:58 | 2385ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-22 02:45:42 | 2413ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-07-31 19:38:49 | 1149ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-24 12:10:17 | 2594ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-21 08:41:18 | 1181ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 21:49:39 | 2222ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-17 13:08:00 | 2010ms | 3 NS 1 A 2 MX | 🔓 Insecure |