DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
tu-tu.cz runs on AS35592.
- Hosting network
- AS35592AS35592
- Managed DNS
- Self-hosted / other
- None
- IPv6 (AAAA)
- Enabled
- CAA pinning
- None
Sits alongside 1,413 other sites on AS35592. Stable here since we started watching (Sep 9, 2026).
The apex and www are the same hosting — the apex via A records, www via a CNAME to tu-tu.cz.
DNS Records for tu-tu.cz
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| tu-tu.cz | NS | 0 | ns1.tele3.cz | |
| tu-tu.cz | NS | 0 | ns2.tele3.cz | |
| tu-tu.cz | NS | 0 | ns3.tele3.eu | |
| tu-tu.cz | AAAA | 0 | 2a01:5f0:c001:124:2::125 | |
| tu-tu.cz | SOA | 43200 | ns1.tele3.cz root.tele3.cz 1788727889 28800 7200 1209600 43200 | |
| tu-tu.cz | A | 0 | 89.187.149.125 | |
| www.tu-tu.cz | CNAME | 0 | tu-tu.cz | |
| www.tu-tu.cz | A | 0 | 89.187.149.125 | |
| www.tu-tu.cz | NS | 0 | ns3.tele3.eu | |
| www.tu-tu.cz | NS | 0 | ns2.tele3.cz | |
| www.tu-tu.cz | NS | 0 | ns1.tele3.cz | |
| www.tu-tu.cz | SOA | 43200 | ns1.tele3.cz root.tele3.cz 1788727889 28800 7200 1209600 43200 | |
| www.tu-tu.cz | AAAA | 0 | 2a01:5f0:c001:124:2::125 |
Get alerted the moment tu-tu.cz's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch tu-tu.cz continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
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
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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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