WWW.RTSAK.COM - cs21.cz
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cs21.cz checked at 2025-11-08T04:50:13.445Z 367ms 58/58/58 100% R:15cs21.cz
| NS | dns1.master.cz | ||||||
| A | 2a01:430:100:4c::acdc 🇨🇿 MASTER-AS | ||||||
| PTR | dns1.master.cz | ||||||
| A | 81.31.37.68🇨🇿 MASTER-AS | ||||||
| PTR | dns1.master.cz | ||||||
| NS | dns2.master.cz | ||||||
| A | 2a01:430:200:1e::abba 🇨🇿 MASTER-AS | ||||||
| PTR | dns2.master.cz | ||||||
| A | 80.79.16.4🇨🇿 MASTER-AS | ||||||
| PTR | dns2.master.cz | ||||||
| A | 89.185.235.109🇨🇿 MASTER-AS | ||||||
| PTR | it.cz | ||||||
cz
| NS | a.ns.nic.cz | ||||||
| NS | b.ns.nic.cz | ||||||
| NS | c.ns.nic.cz | ||||||
| NS | d.ns.nic.cz | ||||||
Starts with same word
Starts similarily
AI analysis
cs21.cz resolves to a single IP address: 89.185.235.109.
Other host names such as *.it.cz, it.cz, itcz.cz and itcz.eu share IP numbers with cs21.cz.
cs21.cz's delegation uses two name servers, dns1.master.cz and dns2.master.cz.
cs21.cz shares the same name server setup as other domains, for example primakauf.cz, iontoforese.com.br, rexta.cz, electroantiperspirant.fr and asc-tuningimports.cz.
cs21.cz at least partially shares name servers with other domains, including iris-egen.cz, naturia.cz, xeex.cz, daumont.cz and exclusiveessential.cz.
these name servers are commonly used together with d1561.masterinter.net, d723.masterinter.net and eris.topdigital.cz.
Host names with two IPs:
dns1.master.cz points to: 2a01:430:100:4c::acdc and 81.31.37.68
dns2.master.cz points to: 2a01:430:200:1e::abba and 80.79.16.4