DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
cesnet.cz runs on AS2852, with email configured.
- Hosting network
- AS2852AS2852
- Managed DNS
- Self-hosted / other
- Configured
- IPv6 (AAAA)
- Enabled
- CAA pinning
- Set
Sits alongside 1,436 other sites on AS2852. Stable here since we started watching (Sep 9, 2026).
The apex and www are the same hosting — the apex via A records.
DNS Records for cesnet.cz
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| cesnet.cz | A | 0 | 78.128.246.93 | |
| cesnet.cz | CAA | 0 | 0 issue postsignum.cz | |
| cesnet.cz | CAA | 0 | 0 issue harica.gr | |
| cesnet.cz | CAA | 0 | 0 issue letsencrypt.org | |
| cesnet.cz | CAA | 0 | 0 contact | |
| cesnet.cz | CAA | 0 | 0 issuewild harica.gr | |
| cesnet.cz | CAA | 0 | 0 iodef mailto:abuse@cesnet.cz | |
| cesnet.cz | AAAA | 0 | 2001:718:ff05:108::93 | |
| cesnet.cz | NS | 0 | nsa.ten.cz | |
| cesnet.cz | NS | 0 | nsa.ces.net | |
| cesnet.cz | NS | 0 | nsa.cesnet.cz | |
| cesnet.cz | NS | 0 | decsys.vsb.cz | |
| cesnet.cz | MX | 0 | 30 | ag3.cesnet.cz |
| cesnet.cz | MX | 0 | 10 | ag2.cesnet.cz |
| cesnet.cz | MX | 0 | 20 | ag1.cesnet.cz |
| cesnet.cz | SOA | 900 | nsa.cesnet.cz hostmaster.cesnet.cz 2020014799 28800 7200 1814400 900 | |
| cesnet.cz | TXT | 0 | v=spf1 exists:%{ir}.spf.cesnet.cz include:servers.mcsv.net ~all | |
| cesnet.cz | TXT | 0 | google-site-verification=_67tfbFvuyNG5y_dNEpIUG7l0cR2p3g0J1znRhtcVhE | |
| www.cesnet.cz | A | 0 | 78.128.246.93 | |
| www.cesnet.cz | TXT | 0 | v=spf1 -all | |
| www.cesnet.cz | AAAA | 0 | 2001:718:ff05:108::93 | |
| www.cesnet.cz | MX | 0 | 10 | ag2.cesnet.cz |
| www.cesnet.cz | MX | 0 | 10 | ag1.cesnet.cz |
Get alerted the moment cesnet.cz's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch cesnet.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, CNAME, TXT 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