WWW.RTSAK.COM - undefined.ru
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undefined.ru checked at 2025-10-31T18:21:15.621Z 1796ms 67/67/67 100% R:10undefined.ru
| NS | dns1.yandex.net | ||||||
| A | 2a02:6b8::213 🇷🇺 YANDEX | ||||||
| PTR | dns1.yandex.net | ||||||
| A | 213.180.204.213🇷🇺 TELETECH | ||||||
| PTR | dns1.yandex.net | ||||||
| NS | dns2.yandex.net | ||||||
| A | 2a02:6b8:0:1::213 🇷🇺 YANDEX | ||||||
| PTR | dns2.yandex.net | ||||||
| A | 93.158.134.213🇷🇺 TELETECH | ||||||
| PTR | dns2.yandex.net | ||||||
| MX | mx.yandex.ru | ||||||
| A | 2a02:6b8::311 🇷🇺 YANDEX | ||||||
| PTR | mxfront.stable.qloud-b.yandex.net | ||||||
| A | 77.88.21.249🇷🇺 TELETECH | ||||||
| PTR | mxfront.stable.qloud-b.yandex.net | ||||||
ru
| NS | a.dns.ripn.net | ||||||
| NS | b.dns.ripn.net | ||||||
| NS | d.dns.ripn.net | ||||||
| NS | e.dns.ripn.net | ||||||
| NS | f.dns.ripn.net | ||||||
Starts with same word
Starts similarily
AI analysis
undefined.ru is delegated to two name servers: dns1.yandex.net and dns2.yandex.net. 
undefined.ru uses the same name server setup as other domains such as glavbuh.info, magicktoys.ru, dabs-studio.ru, groupbms.ru and zongshen.ru.
Host names with two IP numbers:
dns1.yandex.net points to 2a02:6b8::213 and 213.180.204.213; dns2.yandex.net points to 2a02:6b8:0:1::213 and 93.158.134.213.
undefined.ru is handled by a single mail server, mx.yandex.ru.
undefined.ru shares the same mail server setup as other domains, for instance sobinka.net, perm.beboss.ru, gilds.ru, meltor.ru and xn-----6kcb6ak9bsk0c.xn--p1ai.
undefined.ru shares mail servers with other domains at least partially; for instance mebel-stroy.ru, xn-----6kccsb1blldji2t.xn--p1ai, 111y.ru, spchs.ru and universalservice.ru.
these mail servers are commonly used with the mail servers mx.yandex.net.
mx.yandex.ru resolves to two IPs: 2a02:6b8::311 and 77.88.21.249.