czstudy.ru - robtex.com

czstudy.ru

DNSSEC⚠️ Not signed
A213.136.85.7🇩🇪 CONTABO213.136.84.0/23
PTRm31607.contaboserver.net
NSa.ns.selectel.ru ⭐
A2a00:ab00:800::2:53🇷🇺 SELECTEL2a00:ab00::/32 Selectel IPv6
A188.68.203.1🇷🇺 SELECTEL188.68.203.0/24 Selectel Route Object
PTRa.ns.selectel.ru
NSb.ns.selectel.ru
A2a00:ab00:801::2:53🇷🇺 SELECTEL2a00:ab00::/32 Selectel IPv6
A77.223.114.2🇷🇺 SELECTEL77.223.114.0/24 Selectel Route Object
PTRb.ns.selectel.ru
NSc.ns.selectel.ru
A2a00:ab00:802::2:53🇷🇺 SELECTEL2a00:ab00::/32 Selectel IPv6
A188.68.203.3🇷🇺 SELECTEL188.68.203.0/24 Selectel Route Object
PTRc.ns.selectel.ru
NSd.ns.selectel.ru
A2a00:ab00:803::2:53🇷🇺 SELECTEL2a00:ab00::/32 Selectel IPv6
A77.223.114.4🇷🇺 SELECTEL77.223.114.0/24 Selectel Route Object
PTRd.ns.selectel.ru
SOAa.ns.selectel.rusupport@selectel.ru 2026-04-05 #3

ru

DNSSEC🔒 Signed (DS record present)
NSa.dns.ripn.net ⭐
NSb.dns.ripn.net
NSd.dns.ripn.net
NSe.dns.ripn.net
NSf.dns.ripn.net
SOAa.dns.ripn.nethostmaster@ripn.net serial=4068483
WOT: SAFE (72/100)
📈 Tranco rank: #654,122

Subdomains

davlekanovo.czstudy.ru
abaza.czstudy.ru
eisk.czstudy.ru
porhov.czstudy.ru
lysva.czstudy.ru
krasnii-kut.czstudy.ru
aleksandrov.czstudy.ru
melenki.czstudy.ru
gai.czstudy.ru
agidel.czstudy.ru
abdulino.czstudy.ru
donskoi.czstudy.ru
millerovo.czstudy.ru
bronnitsy.czstudy.ru
kamyshin.czstudy.ru
aniva.czstudy.ru
belii.czstudy.ru
alushta.czstudy.ru
kem.czstudy.ru
lyskovo.czstudy.ru
belebei.czstudy.ru
semiluki.czstudy.ru
narimanov.czstudy.ru
abinsk.czstudy.ru

Same first word

czstudy.ru

Similar names

studycz.com

DNS History

25 records (5 active, 20 former)

20162017201820192020202120222023202420252026NSa.ns.selectel.rub.ns.selectel.ruc.ns.selectel.rud.ns.selectel.rudion.ns.cloudflare.comdomain.park7.ruforsale.park7.runs1.peterhost.runs2.peterhost.ruval.ns.cloudflare.comMXmx2.peterhost.rumx3.peterhost.rumx4.peterhost.ruA213.136.85.7104.21.50.79168.222.183.248172.67.159.121188.114.96.0188.114.97.02606:4700:3035::6815:324f2606:4700:3037::ac43:9f792a06:98c1:3120::2a06:98c1:3121::80.93.62.24691.226.31.83
●NSa.ns.selectel.ru2026-03-26 → 2026-04-12 · 3 obs
○ 2026-02-17 03:51:54
● 2026-03-26 22:11:00
● 2026-04-12 04:47:32
●NSb.ns.selectel.ru2026-03-26 → 2026-04-12 · 3 obs
○ 2026-02-17 03:51:54
● 2026-03-26 22:11:00
● 2026-04-12 04:47:32
●NSc.ns.selectel.ru2026-03-26 → 2026-04-12 · 3 obs
○ 2026-02-17 03:51:54
● 2026-03-26 22:11:00
● 2026-04-12 04:47:32
●NSd.ns.selectel.ru2026-03-26 → 2026-04-12 · 3 obs
○ 2026-02-17 03:51:54
● 2026-03-26 22:11:00
● 2026-04-12 04:47:32
○NSdion.ns.cloudflare.com2026-02-16 → 2026-02-17 · 5 obs
○ 2018-06-11 00:32:36
● 2026-02-16 11:47:06
● 2026-02-17 03:51:54
○ 2026-03-26 22:11:00
○ 2026-04-12 04:47:32
○NSdomain.park7.ru2018-06-11 → 2018-06-11 · 4 obs
○ 2017-01-16 02:22:42
● 2018-06-11 00:32:36
○ 2026-02-16 11:47:06
○ 2026-04-12 04:47:32
○NSforsale.park7.ru2018-06-11 → 2018-06-11 · 4 obs
○ 2017-01-16 02:22:42
● 2018-06-11 00:32:36
○ 2026-02-16 11:47:06
○ 2026-04-12 04:47:32
○NSns1.peterhost.ru2015-08-28 → 2017-01-16 · 4 obs
● 2015-08-28 09:03:36
● 2017-01-16 02:22:42
○ 2018-06-11 00:32:36
○ 2026-04-12 04:47:32
○NSns2.peterhost.ru2015-08-28 → 2017-01-16 · 4 obs
● 2015-08-28 09:03:36
● 2017-01-16 02:22:42
○ 2018-06-11 00:32:36
○ 2026-04-12 04:47:32
○NSval.ns.cloudflare.com2026-02-16 → 2026-02-17 · 5 obs
○ 2018-06-11 00:32:36
● 2026-02-16 11:47:06
● 2026-02-17 03:51:54
○ 2026-03-26 22:11:00
○ 2026-04-12 04:47:32
○MXmx2.peterhost.ru2015-08-28 → 2026-02-17 · 4 obs
● 2015-08-28 09:03:36
● 2026-02-17 03:51:54
○ 2026-03-26 22:11:00
○ 2026-04-12 04:47:32
○MXmx3.peterhost.ru2015-08-28 → 2026-02-17 · 4 obs
● 2015-08-28 09:03:36
● 2026-02-17 03:51:54
○ 2026-03-26 22:11:00
○ 2026-04-12 04:47:32
○MXmx4.peterhost.ru2015-08-28 → 2026-02-17 · 4 obs
● 2015-08-28 09:03:36
● 2026-02-17 03:51:54
○ 2026-03-26 22:11:00
○ 2026-04-12 04:47:32
○A104.21.50.792026-02-16 → 2026-04-12 · 2 obs
○ 2026-02-16 11:47:06
○ 2026-04-12 04:47:32
○A168.222.183.2482026-03-26 → 2026-03-28 · 5 obs
○ 2026-02-17 03:51:54
● 2026-03-26 22:11:00
● 2026-03-28 13:44:40
○ 2026-04-12 04:47:30
○ 2026-04-12 04:47:32
○A172.67.159.1212026-02-16 → 2026-04-12 · 2 obs
○ 2026-02-16 11:47:06
○ 2026-04-12 04:47:32
○A188.114.96.02026-02-16 → 2026-02-17 · 5 obs
○ 2018-06-11 00:32:36
● 2026-02-16 11:47:06
● 2026-02-17 03:51:54
○ 2026-03-26 22:11:00
○ 2026-04-12 04:47:32
○A188.114.97.02026-02-16 → 2026-02-17 · 5 obs
○ 2018-06-11 00:32:36
● 2026-02-16 11:47:06
● 2026-02-17 03:51:54
○ 2026-03-26 22:11:00
○ 2026-04-12 04:47:32
●A213.136.85.72026-04-12 → 2026-04-12 · 3 obs
○ 2026-03-28 13:44:40
● 2026-04-12 04:47:30
● 2026-04-12 04:47:32
○A2606:4700:3035::6815:324f2026-02-16 → 2026-04-12 · 2 obs
○ 2026-02-16 11:47:06
○ 2026-04-12 04:47:32
○A2606:4700:3037::ac43:9f792026-02-16 → 2026-04-12 · 2 obs
○ 2026-02-16 11:47:06
○ 2026-04-12 04:47:32
○A2a06:98c1:3120::2026-02-16 → 2026-02-17 · 5 obs
○ 2018-06-11 00:32:36
● 2026-02-16 11:47:06
● 2026-02-17 03:51:54
○ 2026-03-26 22:11:00
○ 2026-04-12 04:47:32
○A2a06:98c1:3121::2026-02-16 → 2026-02-17 · 5 obs
○ 2018-06-11 00:32:36
● 2026-02-16 11:47:06
● 2026-02-17 03:51:54
○ 2026-03-26 22:11:00
○ 2026-04-12 04:47:32
○A80.93.62.2462015-08-28 → 2017-01-16 · 4 obs
● 2015-08-28 09:03:36
● 2017-01-16 02:22:42
○ 2018-06-11 00:32:36
○ 2026-04-12 04:47:32
○A91.226.31.832018-06-11 → 2018-06-11 · 4 obs
○ 2017-01-16 02:22:42
● 2018-06-11 00:32:36
○ 2026-02-16 11:47:06
○ 2026-04-12 04:47:32

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
rue.dns.ripn.net, a.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net...-
czstudy.ruc.ns.selectel.ru, d.ns.selectel.ru, a.ns.selectel.ru, b.ns.selectel.ru4 records

✅ Authoritative Response

Server:188.68.203.3

NS records: c.ns.selectel.ru, d.ns.selectel.ru, a.ns.selectel.ru, b.ns.selectel.ru

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for czstudy.ru (unsigned zone)

⏱️ Timing

Total: 638ms | Queries: -

📄 Records

TypeCountSample Data
A1213.136.85.7
NS4d.ns.selectel.ru, b.ns.selectel.ru...
SOA1a.ns.selectel.ru support.selectel.ru

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (d.ns.selectel.ru, c.ns.selectel.ru, b.ns.selectel.ru...)

Analysis

Hierarchy

czstudy.ru is a parent of davlekanovo.czstudy.ru, abaza.czstudy.ru, eisk.czstudy.ru, porhov.czstudy.ru, lysva.czstudy.ru and a few other host names.

IP Addresses

czstudy.ru points to a single IP address: 213.136.85.7.

Other host names such as monar-os.ru, karachev.helpdissertation.ru, semenov.isuzu-altai.ru, kozlovka.mmc-pro.ru and okulovka.tz-perm.ru share IPs with czstudy.ru.

Name Servers

czstudy.ru is delegated to four name servers: a.ns.selectel.ru, b.ns.selectel.ru, c.ns.selectel.ru and d.ns.selectel.ru.

czstudy.ru at least partially shares name servers with other domains, for example razbor54.ru, hobbywing-russia.ru, buzoola.com, ka12.ru and kb-12.com.

Host names with two IP numbers:

a.ns.selectel.ru points to: 2a00:ab00:800::2:53 and 188.68.203.1

b.ns.selectel.ru points to: 2a00:ab00:801::2:53 and 77.223.114.2

c.ns.selectel.ru points to: 2a00:ab00:802::2:53 and 188.68.203.3

d.ns.selectel.ru points to: 2a00:ab00:803::2:53 and 77.223.114.4