crowdbook.dk is a .dk domain served by 4 nameservers (ns-1035.awsdns-01.org, ns-1578.awsdns-05.co.uk, ns-350.awsdns-43.com and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 34.252.104.197 is hosted by Amazon.com, Inc. (AS16509) in Ireland. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is not DNSSEC-signed, 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns-1035.awsdns-01.org | — | — | — |
| ns-1578.awsdns-05.co.uk | — | — | — |
| ns-350.awsdns-43.com | — | — | — |
| ns-748.awsdns-29.net | — | — | — |
| TXT Record |
|---|
| v=spf1 include:_spf.google.com ~all |
| Policy | Record (crowdbook.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.google.com ~all |
| www | 52.51.141.128 99.81.174.230 (AS16509) (address records, no CNAME) |
| www vs bare domain | Same network crowdbook.dk: 52.51.141.128 99.81.174.230 (AS16509) www.crowdbook.dk: 52.51.141.128 99.81.174.230 (AS16509) |
| Wildcard | Yes: any name under the zone resolves |
| Selector | CNAME | Key |
|---|---|---|
| — | 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.
DNS lookups: 1/10 · policy: ~all
No problems found| 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 | 1 |
| Primary NS (MNAME) | ns-1035.awsdns-01.org |
| Responsible (RNAME) | awsdns-hostmaster@amazon.com |
| Refresh | 7200s |
| Retry | 900s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-25 21:42:06 | 3959ms | 4 NS 2 A 5 MX | 🔓 Insecure |
| 2026-08-26 04:41:36 | 3752ms | 4 NS 2 A 5 MX | 🔓 Insecure |
| 2026-06-29 14:43:41 | 1014ms | 4 NS 2 A 5 MX | 🔓 Insecure |
| 2026-06-17 00:08:43 | 65535ms | 4 NS 2 A 5 MX | 🔓 Insecure |
| 2026-06-16 23:16:48 | 2453ms | 4 NS 2 A 5 MX | 🔓 Insecure |
| 2026-06-16 23:11:43 | 717ms | 4 NS 2 A 5 MX | 🔓 Insecure |
| 2026-06-16 23:00:48 shown | 919ms | 4 NS 2 A 5 MX | 🔓 Insecure |