DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
root4u.cz runs on Cloudflare, with DNS by Cloudflare and email configured.
- Hosting network
- CloudflareAS13335Cloudflare
- Managed DNS
- Cloudflare
- Configured
- IPv6 (AAAA)
- Enabled
- CAA pinning
- None
Sits alongside 4,999+ other sites on Cloudflare. Stable here since we started watching (Aug 18, 2026).
The apex and www are the same hosting — the apex via A records.
DNS Records for root4u.cz
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| root4u.cz | NS | 0 | aspen.ns.cloudflare.com | |
| root4u.cz | NS | 0 | finley.ns.cloudflare.com | |
| root4u.cz | SOA | 1800 | aspen.ns.cloudflare.com dns.cloudflare.com 2411725583 10000 2400 604800 1800 | |
| root4u.cz | A | 0 | 172.67.183.152 | |
| root4u.cz | A | 0 | 104.21.88.145 | |
| root4u.cz | AAAA | 0 | 2606:4700:3032::ac43:b798 | |
| root4u.cz | AAAA | 0 | 2606:4700:3033::6815:5891 | |
| root4u.cz | TXT | 0 | google-site-verification=ZS7B0-NrQ7EPGBSCOOMq74_hWCUUDcsPKDby66gu1bw | |
| root4u.cz | TXT | 0 | v=spf1 mx -all | |
| root4u.cz | TXT | 0 | MS=770736611DA644EC1553A4174E153528F4F815EA | |
| root4u.cz | MX | 0 | 30 | mail.root4u.cz |
| root4u.cz | MX | 0 | 20 | email.root4u.cz |
| www.root4u.cz | AAAA | 0 | 2606:4700:3032::ac43:b798 | |
| www.root4u.cz | AAAA | 0 | 2606:4700:3033::6815:5891 | |
| www.root4u.cz | A | 0 | 172.67.183.152 | |
| www.root4u.cz | A | 0 | 104.21.88.145 |
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Uptime
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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.
TLS certificate
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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