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Hosting & Network
rsd.cz runs on AS204772, with email via Microsoft 365.
- Hosting network
- AS204772AS204772
- Managed DNS
- Self-hosted / other
- Microsoft 365
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 3 other sites on AS204772. Stable here since we started watching (Aug 30, 2026).
The apex and www are the same hosting — the apex via A records, www via a CNAME to produkce-web.rsd.cz.
DNS Records for rsd.cz
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| rsd.cz | A | 0 | 185.240.221.97 | |
| rsd.cz | MX | 0 | rsd-cz.mail.protection.outlook.com | |
| rsd.cz | TXT | 0 | apple-domain-verification=YdFqLBaTP121oGmF | |
| rsd.cz | TXT | 0 | v=spf1 a mx ip4:185.240.222.11 ip4:185.240.221.25 ip4:212.20.102.147 ip4:178.238.45.36 include:spf.protection.outlook.com -all | |
| rsd.cz | TXT | 0 | adobe-idp-site-verification=edb93034b818dbec6261fc31b63cb64dc8af4bbed99e1ec04824e99f8f4cc302 | |
| rsd.cz | SOA | 3600 | dns.nethost.cz hostmaster.nethost.cz 2026091001 10801 3600 3600000 3600 | |
| rsd.cz | NS | 0 | dns.nethost.cz | |
| rsd.cz | NS | 0 | tns.nethost.eu | |
| rsd.cz | NS | 0 | sns.nethost.sk | |
| www.rsd.cz | A | 0 | 185.240.221.97 | |
| www.rsd.cz | CNAME | 0 | produkce-web.rsd.cz |
Get alerted the moment rsd.cz's DNS changes
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About DNS Records
DNS (Domain Name System) records are instructions that provide information about a domain, including its IP addresses, mail servers, and other services. Common record types include:
- SOA (Start of Authority) - Contains administrative information about the zone
- NS (Nameserver) - Specifies authoritative nameservers for the domain
- A (Address) - Maps a domain to an IPv4 address
- AAAA - Maps a domain to an IPv6 address
- CNAME (Canonical Name) - Creates an alias pointing to another domain
- MX (Mail Exchange) - Specifies mail servers for the domain