estud.ru - robtex.com
estud.ru
| DNSSEC | ⚠️ Not signed | ||||||
| A | 31.41.40.19🇷🇺 ASRELINK31.41.40.0/21 RelinkRoute | ||||||
| PTR | s19.cishost.ru | ||||||
| NS | s19.cishost.ru ⭐ | ||||||
| A | 2a05:1700:0:19::2🇷🇺 ASRELINK2a05:1700::/48 RelinkRouteIPv6 | ||||||
| PTR | s19.cishost.ru | ||||||
| A | 31.41.40.19🇷🇺 ASRELINK31.41.40.0/21 RelinkRoute | ||||||
| PTR | s19.cishost.ru | ||||||
| NS | ns1.cishost.ru | ||||||
| A | 2a05:1700::a🇷🇺 ASRELINK2a05:1700::/48 RelinkRouteIPv6 | ||||||
| PTR | ns1.cishost.ru | ||||||
| A | 31.41.42.43🇷🇺 ASRELINK31.41.40.0/21 RelinkRoute | ||||||
| PTR | ns1.cishost.ru | ||||||
| NS | ns2.cishost.ru | ||||||
| A | 2a05:1700:2::3🇷🇺 ASRELINK2a05:1700:2::/48 RelinkRouteIPv6 | ||||||
| A | 185.68.92.3🇷🇺 ASRELINK185.68.92.0/22 RelinkRoute | ||||||
| PTR | ns2.cishost.ru | ||||||
| MX | mail.estud.ru(20) | ||||||
| A | 31.41.40.19🇷🇺 ASRELINK31.41.40.0/21 RelinkRoute | ||||||
| PTR | s19.cishost.ru | ||||||
| TXT | v=spf1 ip4:31.41.40.19 a mx ~all | ||||||
| SOA | s19.cishost.rusupport@cishost.ru 2025-12-31 #0 | ||||||
ru
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| 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 | ||||||
| SOA | a.dns.ripn.nethostmaster@ripn.net serial=4068147 | ||||||
Subdomains
mail.estud.ru |
Same first word
Similar names
DNS History
9 records (5 active, 4 former)
●NSns1.cishost.ru2026-02-20 → 2026-03-21 · 3 obs
● 2026-02-20 08:10:18
● 2026-03-21 05:04:32
○NSns1.sevhost.info2015-05-19 → 2017-03-13 · 4 obs
● 2017-03-13 04:08:56
○ 2026-02-20 08:10:18
○ 2026-03-21 05:04:32
●NSns2.cishost.ru2026-02-20 → 2026-03-21 · 3 obs
● 2026-02-20 08:10:18
● 2026-03-21 05:04:32
○NSns2.sevhost.info2015-05-19 → 2017-03-13 · 4 obs
● 2017-03-13 04:08:56
○ 2026-02-20 08:10:18
○ 2026-03-21 05:04:32
●NSs19.cishost.ru2026-02-20 → 2026-03-21 · 3 obs
● 2026-02-20 08:10:18
● 2026-03-21 05:04:32
●MXmail.estud.ru2015-05-19 → 2026-03-21 · 2 obs
● 2026-03-21 05:04:32
○A178.218.208.832016-04-19 → 2017-03-13 · 5 obs
● 2016-04-19 12:19:16
● 2017-03-13 04:08:56
○ 2026-02-20 08:10:18
○ 2026-03-21 05:04:32
●A31.41.40.192026-02-20 → 2026-03-21 · 3 obs
● 2026-02-20 08:10:18
● 2026-03-21 05:04:32
○A91.189.87.2352015-05-19 → 2016-01-31 · 4 obs
● 2016-01-31 03:58:14
○ 2016-04-19 12:19:16
○ 2026-03-21 05:04:32
🔍 DNS Trace
Analysis
Hierarchy
The parent of mail.estud.ru is estud.ru.
IP Addresses
estud.ru points to a single IP address: 31.41.40.19.
Other host names such as mail.efremov.pro, xn--80ahcc7avfgj.xn--p1ai, mail.0vs.ru, bastion52.ru and mail.ifuocn.com share IPs with estud.ru.
Name Servers
estud.ru is delegated to three name servers: ns1.cishost.ru, ns2.cishost.ru and s19.cishost.ru.
estud.ru at least partially shares name servers with other domains, for example vkusnyi-dom.ru, ispss.ru, baninavode.ru, avto-evacuator-nn.ru and illumination.ru.
these name servers are commonly used with the following name servers: s12.cishost.ru, g2.cishost.ru, s18.cishost.ru, s10.cishost.ru, m2.cishost.ru, s16.cishost.ru, s15.cishost.ru, s13.cishost.ru, b1.cishost.ru and dns.
Host names with two IP numbers:
ns1.cishost.ru points to 2a05:1700::a and 31.41.42.43
ns2.cishost.ru points to 2a05:1700:2::3 and 185.68.92.3
s19.cishost.ru points to 2a05:1700:0:19::2 and 31.41.40.19
Mail Servers
The mail.estud.ru mail server handles estud.ru.
mail.estud.ru points to a single IP number: 31.41.40.19.