undefined.cz checked at 2025-03-28T13:11:47.993Z 213ms 80/80/80 100% R:13DNS.NINJA - undefined.cz
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undefined.cz
| MX | mx.web4u.cz | ||||||
| A | 2001:1568::7012 🇨🇿 WEB4U | ||||||
| PTR | mx.web4u.cz | ||||||
| A | 81.91.87.12🇨🇿 WEB4U | ||||||
| PTR | mx.web4u.cz | ||||||
| NS | ns2.web4u.cz | ||||||
| A | 2a02:a40:100:28ff::12 🇨🇿 Radiokomunikace | ||||||
| PTR | ns2.web4u.cz | ||||||
| A | 85.207.53.12🇨🇿 Radiokomunikace | ||||||
| PTR | ns2.web4u.cz | ||||||
| NS | ns.web4u.cz | ||||||
| A | 2001:1568:fd::241 🇨🇿 WEB4U | ||||||
| PTR | ns.web4u.cz | ||||||
| A | 185.14.224.241🇨🇿 WEB4U | ||||||
| PTR | ns.web4u.cz | ||||||
| A | 2001:1568::14 🇨🇿 WEB4U | ||||||
| PTR | php7.web4u.cz | ||||||
| A | 81.91.86.14🇨🇿 WEB4U | ||||||
| PTR | php7.web4u.cz | ||||||
cz
| NS | a.ns.nic.cz | ||||||
| NS | b.ns.nic.cz | ||||||
| NS | c.ns.nic.cz | ||||||
| NS | d.ns.nic.cz | ||||||
AI analysis
undefined.cz points to two IP numbers: 2001:1568::14 and 81.91.86.14.
IP numbers are shared by undefined.cz with other host names like mail.rychlazelva.cz, axa-ns.rychlydrat.cz, vs233.server4u.cz, vs472.server4u.cz, and mail.evanescence.cz.
Two name servers, ns2.web4u.cz and ns.web4u.cz, are delegated to undefined.cz.
The name server setup of undefined.cz is shared with other domains such as fein-naradi.cz, umb.cz, paex.cz, cutnest.com, and natural-world.eu.
ns2.web4u.cz and ns.web4u.cz each point to two IP numbers: 2a02:a40:100:28ff::12, 85.207.53.12 and 2001:1568:fd::241, 185.14.224.241 respectively.
The mail server mx.web4u.cz is responsible for handling undefined.cz.
Just like the domains slezanka.cz, valanga.eu, montessori-podebrady.cz, cdmotor.cz, and kubak.cz, undefined.cz also has the same mail server setup.
The domain undefined.cz partially shares some mail servers with other domains, such as retailguide.cz.
mx.web4u.cz points to two IP numbers: 2001:1568::7012 and 81.91.87.12.
dbq