cat-rental.dk is a .dk domain served by 3 nameservers (ns1.domaindiscount24.net, ns2.domaindiscount24.net, ns3.domaindiscount24.net). It was registered on 25 March 2008 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.22.145.121 is hosted by Amazon.com, Inc. (AS16509) in Germany. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|
| ns1.domaindiscount24.net | — | — | — |
| ns2.domaindiscount24.net | — | — | — |
| ns3.domaindiscount24.net | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 5.22.145.121 | — | relay.mail-forwarder.io | AS16509 | Amazon.com, Inc. | 5.22.145.0/24 | 🇩🇪 Germany | — |
| 5.22.145.16 | — | relay.mail-forwarder.io | AS16509 | Amazon.com, Inc. | 5.22.145.0/24 | 🇩🇪 Germany | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a00:18e0:5:2:7577:4e4d:413b:f507 | — | — | AS16509 | Amazon.com, Inc. | 2a00:18e0:5:0:0:0:0:0/48 | 🇩🇪 Germany | — |
| 2a00:18e0:5:3:dfe2:c743:85aa:61bc | — | — | AS16509 | Amazon.com, Inc. | 2a00:18e0:5:0:0:0:0:0/48 | 🇩🇪 Germany | — |
| TXT Record |
|---|
| v=spf1 include:_spf.google.com ip4:207.126.144.0/20 ~all |
| Policy | Record (cat-rental.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.google.com ip4:207.126.144.0/20 ~all |
| Policy | Record (_dmarc.cat-rental.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; fo=1; rua=mailto:dmarc_rua@dmarc.zeppelin.com; ruf=mailto:dmarc_ruf@dmarc.zeppelin.com |
| www | 5.22.145.121 5.22.145.16 2a00:18e0:5:2:7577:4e4d:413b:f507 2a00:18e0:5:3:dfe2:c743:85aa:61bc (AS16509) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| 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 | 2025012800 |
| Primary NS (MNAME) | ns1.domaindiscount24.net |
| Responsible (RNAME) | tech@key-systems.net |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 28800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2008-03-25 |
| Expires | 2027-03-31 (155d) |
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 |
|---|---|---|---|
| 2026-09-30 21:32:32 | 860ms | 3 NS 2 A 5 MX | 🔓 Insecure |
| 2026-09-29 20:25:31 | 745ms | 3 NS 2 A 5 MX | 🔓 Insecure |
| 2026-09-25 10:51:58 | 859ms | 3 NS 2 A 5 MX | 🔓 Insecure |
| 2026-09-13 21:20:05 | 1377ms | 3 NS 2 A 5 MX | 🔓 Insecure |
| 2026-09-02 08:50:46 | 994ms | 3 NS 2 A 5 MX | 🔓 Insecure |
| 2026-07-01 23:21:50 | 3186ms | 3 NS 2 A 5 MX | 🔓 Insecure |
| 2026-06-16 19:46:23 shown | 706ms | 3 NS 2 A 5 MX | 🔓 Insecure |