DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
czerner.cz runs on Cloudflare, with DNS by Cloudflare and email via Proton.
- Hosting network
- CloudflareAS13335Cloudflare
- Managed DNS
- Cloudflare
- Proton
- IPv6 (AAAA)
- Enabled
- CAA pinning
- None
Sits alongside 4,999+ other sites on Cloudflare. Stable here since we started watching (Jul 26, 2026).
The apex and www are the same hosting — the apex via A records.
DNS Records for czerner.cz
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| czerner.cz | NS | 0 | ashley.ns.cloudflare.com | |
| czerner.cz | NS | 0 | owen.ns.cloudflare.com | |
| czerner.cz | A | 0 | 104.21.42.87 | |
| czerner.cz | A | 0 | 172.67.203.172 | |
| czerner.cz | MX | 0 | 10 | mail.protonmail.ch |
| czerner.cz | MX | 0 | 20 | mailsec.protonmail.ch |
| czerner.cz | AAAA | 0 | 2606:4700:3031::6815:2a57 | |
| czerner.cz | AAAA | 0 | 2606:4700:3030::ac43:cbac | |
| czerner.cz | SOA | 1800 | ashley.ns.cloudflare.com dns.cloudflare.com 2410323826 10000 2400 604800 1800 | |
| czerner.cz | TXT | 0 | google-site-verification=T1R5CbikPlzmP9T3sKh0HejJqRk681ebVR06SVBDYL0 | |
| czerner.cz | TXT | 0 | protonmail-verification=d1948ef0a20bf994c499ba4956f7c8a4cbb804ee | |
| czerner.cz | TXT | 0 | v=spf1 include:_spf.protonmail.ch mx ~all | |
| www.czerner.cz | A | 0 | 104.21.42.87 | |
| www.czerner.cz | A | 0 | 172.67.203.172 | |
| www.czerner.cz | AAAA | 0 | 2606:4700:3031::6815:2a57 | |
| www.czerner.cz | AAAA | 0 | 2606:4700:3030::ac43:cbac |
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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