CF1759741082578-tsm20251005211530

DNSWHOIS.INFO - a4u.cz

Search for IP or hostnames:

a4u.cz checked at 2025-10-06T08:58:02.565Z 264ms 76/76/76 100% R:14

a4u.cz

MXm107.server4u.cz
A81.91.84.210🇨🇿 WEB4U
PTRm107.server4u.cz
NSns2.web4u.cz
A2a02:a40:100:28ff::12 🇨🇿 Radiokomunikace
PTRns2.web4u.cz
A85.207.53.12🇨🇿 Radiokomunikace
PTRns2.web4u.cz
NSns.web4u.cz
A2001:1568:fd::241 🇨🇿 WEB4U
PTRns.web4u.cz
A185.14.224.241🇨🇿 WEB4U
PTRns.web4u.cz
A2001:1568:84:210::1 🇨🇿 WEB4U
PTRm107.server4u.cz
A81.91.84.210🇨🇿 WEB4U
PTRm107.server4u.cz

cz

NSa.ns.nic.cz
NSb.ns.nic.cz
NSc.ns.nic.cz
NSd.ns.nic.cz

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AI analysis

a4u.cz is a parent of mail.a4u.cz and www.a4u.cz.

a4u.cz points to two IPs: 2001:1568:84:210::1 and 81.91.84.210.

Other host names, for instance xxx4u.cz, www.xxx4u.cz, mail.free4u.cz, mail.fly4u.cz and bydlet.org share IP numbers with a4u.cz.

Two name servers ns2.web4u.cz and ns.web4u.cz are delegated to a4u.cz.

a4u.cz uses the same name server configuration as other domains, such as cyklo-wellness-penzion-palice.cz, bricomarche.cz, sprava-domeny.sk, zspraksice.cz and tvikon.cz.

Host names with two IPs:

ns2.web4u.cz points to 2a02:a40:100:28ff::12 and 85.207.53.12.

ns.web4u.cz points to 2001:1568:fd::241 and 185.14.224.241.

a4u.cz is handled by a single mail server, m107.server4u.cz.

a4u.cz shares the same mail server setup as other domains, including bydlet.org, ceniny.com, golf4u.cz, kanclik.com and fly4u.cz.

m107.server4u.cz points to one IP number: 81.91.84.210.

Perform reverse DNS lookup as well as normal forward DNS. Check Autonomous System Numbers (ASNs) and BGP connections between Internet Service Providers.
dbq

bylcJPZ CF johedugfp 2025-10-06