DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
optet.cz runs on AS197019, with email via Microsoft 365.
- Hosting network
- AS197019AS197019
- Managed DNS
- Self-hosted / other
- Microsoft 365
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 4,062 other sites on AS197019. Stable here since we started watching (Aug 7, 2026).
The apex and www are the same hosting — the apex via A records.
DNS Records for optet.cz
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| optet.cz | NS | 0 | ns.wedos.cz | |
| optet.cz | NS | 0 | ns.wedos.eu | |
| optet.cz | NS | 0 | ns.wedos.com | |
| optet.cz | NS | 0 | ns.wedos.net | |
| optet.cz | MX | 0 | optet-cz.mail.protection.outlook.com | |
| optet.cz | SOA | 3600 | ns.wedos.net wedos.wedos.com 2026070401 3600 1800 1814400 3600 | |
| optet.cz | A | 0 | 89.221.213.60 | |
| optet.cz | TXT | 0 | MS=ms64232141 | |
| optet.cz | TXT | 0 | v=spf1 include:spf.protection.outlook.com -all | |
| optet.cz | TXT | 0 | google-site-verification=xcyje7-pslNYg8ymPTKcK1gKZuEIANPCUXlD8tGoN9I | |
| www.optet.cz | A | 0 | 89.221.213.60 |
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DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
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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