castagency.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 9 June 2022 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 161.97.112.239 is hosted by Contabo GmbH (AS51167) in France. Mail is handled by mail.castagency.dk. The zone is DNSSEC-signed and validates, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 161.97.112.239 | 747s | mail.castagency.dk | AS51167 | Contabo GmbH | 161.97.64.0/18 | 🇫🇷 France | Lauterbourg |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mail.castagency.dk | 161.97.112.239 | mail.castagency.dk | AS51167 Contabo GmbH |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 161.97.112.239 |
| 🔶 Autoconfig | 161.97.112.239 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _imaps._tcp | 0 | 0 | 993 | castagency.dk |
| TXT Record |
|---|
| brevo-code:ab9b2e13c7bb3fe8218149cb39900646 |
| google-site-verification=hg80imxGQq_ANuX1O86vQk2w53Vq4pmzrPWaH9E0uD0 |
| v=spf1 include:_spf.mailersend.net include:spf.simply.com ip4:161.97.112.239 -all |
| Policy | Record (castagency.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.mailersend.net include:spf.simply.com ip4:161.97.112.239 -all |
| Policy | Record (_dmarc.castagency.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:rua@dmarc.brevo.com |
| www | 161.97.112.239 (AS51167) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 2/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026100100 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2022-06-09 |
| Expires | 2027-06-08 (228d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 12:54:35 | 548ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-02 18:10:59 shown | 544ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 17:56:40 | 566ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-24 07:35:21 | 1048ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-15 22:31:25 | 1540ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-02 00:45:32 | 663ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 19:42:36 | 613ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 19:40:59 | 595ms | 4 NS 1 A 1 MX | 🔒 Secure |