itstudy.ru - dns.ninja
itstudy.ru
| DNSSEC | ⚠️ Not signed | ||||||
| A | 91.201.52.176🇷🇺 INTERNET-PRO-AS91.201.52.0/24 | ||||||
| PTR | h46.netangels.ru | ||||||
| NS | ns1.netangels.ru ⭐ | ||||||
| A | 91.201.54.2🇷🇺 INTERNET-PRO-AS91.201.54.0/23 NetAngels.RU network in Yekaterinburg | ||||||
| PTR | ns1.netangels.ru | ||||||
| NS | ns2.netangels.ru | ||||||
| A | 91.201.52.2🇷🇺 INTERNET-PRO-AS91.201.52.0/24 | ||||||
| PTR | ns2.netangels.ru | ||||||
| NS | ns3.netangels.ru ⚠️ Not in parent delegation | ||||||
| A | 45.86.39.2🇷🇺 INTERNET-PRO-AS45.86.39.0/24 | ||||||
| NS | ns4.netangels.ru ⚠️ Not in parent delegation | ||||||
| A | 80.87.101.2🇷🇺 INTERNET-PRO-AS80.87.101.0/24 | ||||||
| MX | mx0.itstudy.ru ⭐ | ||||||
| A | 91.201.54.7🇷🇺 INTERNET-PRO-AS91.201.54.0/23 NetAngels.RU network in Yekaterinburg | ||||||
| PTR | mx0.netangels.ru | ||||||
| MX | mx1.itstudy.ru(5) | ||||||
| A | 91.201.54.8🇷🇺 INTERNET-PRO-AS91.201.54.0/23 NetAngels.RU network in Yekaterinburg | ||||||
| PTR | mx1.netangels.ru | ||||||
| TXT | v=spf1 redirect=netangels.ru | ||||||
| TXT | v=spf1 a include:netangels.ru ~all | ||||||
| SOA | ns1.netangels.ruhostmaster@netangels.ru serial=1780592636 | ||||||
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=4069196 | ||||||
Subdomains
Same first word
itstudy.ru |
itstudy.org |
itstudy.or.kr |
itstudy.com |
itstudy.cn |
itstudy.uz |
itstudy.co.kr |
itstudy.hu |
itstudy.net |
itstudy.eu |
itstudy.cc |
Similar names
studyit.eu |
studyit.org |
studyit.info |
studity.com |
studyit.shop |
studyit.org.nz |
itsduty.com |
studyit.co.uk |
studyit.com |
studyit.nl |
studyit.net |
studyit.co.nz |
studyit.govt.nz |
studyit.de |
DNS History
9 records (7 active, 2 former)
●NSns1.netangels.ru2015-06-24 → 2026-06-09 · 2 obs
● 2026-06-09 21:52:00
●NSns2.netangels.ru2015-06-24 → 2026-06-09 · 2 obs
● 2026-06-09 21:52:00
●NSns3.netangels.ru2016-08-03 → 2026-06-09 · 3 obs
● 2016-08-03 10:46:14
● 2026-06-09 21:52:00
●NSns4.netangels.ru2016-08-03 → 2026-06-09 · 3 obs
● 2016-08-03 10:46:14
● 2026-06-09 21:52:00
●MXmx0.itstudy.ru2015-06-24 → 2026-06-09 · 2 obs
● 2026-06-09 21:52:00
●MXmx1.itstudy.ru2015-06-24 → 2026-06-09 · 2 obs
● 2026-06-09 21:52:00
○A185.93.108.482016-04-24 → 2017-01-08 · 5 obs
● 2016-04-24 03:41:26
● 2017-01-08 11:00:20
○ 2026-02-21 00:46:00
○ 2026-06-09 21:52:00
●A91.201.52.1762026-02-21 → 2026-06-09 · 3 obs
● 2026-02-21 00:46:00
● 2026-06-09 21:52:00
○A91.201.52.482015-06-24 → 2016-01-28 · 4 obs
● 2016-01-28 07:52:22
○ 2016-04-24 03:41:26
○ 2026-06-09 21:52:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ru | a.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net, e.dns.ripn.net... | - |
| itstudy.ru | ns1.netangels.ru, ns2.netangels.ru | 2 records |
✅ Authoritative Response
Server:91.201.52.2
NS records: ns1.netangels.ru, ns2.netangels.ru
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for itstudy.ru (unsigned zone)
⏱️ Timing
Total: 788ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 91.201.52.176 |
| NS | 4 | ns1.netangels.ru, ns2.netangels.ru... |
| MX | 2 | mx0.itstudy.ru (pri: 1), mx1.itstudy.ru (pri: 5) |
| TXT | 2 | v=spf1 redirect=netangels.ru, v=spf1 a include:netangels.ru ~all |
| SOA | 1 | ns1.netangels.ru hostmaster.netangels.ru |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns2.netangels.ru, ns1.netangels.ru)
Analysis
Hierarchy
mx0.itstudy.ru and mx1.itstudy.ru are both subdomains of itstudy.ru.
IP Addresses
itstudy.ru resolves to one IP address: 91.201.52.176.
ortho-ural.ru, www.print2pdf.ru, electra-hvac.ru and two other host names share IP numbers with itstudy.ru.
Name Servers
itstudy.ru is served by 4 authoritative name servers: ns1.netangels.ru, ns2.netangels.ru, ns3.netangels.ru and ns4.netangels.ru.
At least some of itstudy.ru's name servers are shared with other domains, for example ra-kolibri.com, farfourhotel.com, grinvich-cinema.ru and two more.
Each of the four hosts ns1.netangels.ru, ns2.netangels.ru, ns3.netangels.ru and ns4.netangels.ru points to a single IP address — ns1.netangels.ru points to 91.201.54.2, ns2.netangels.ru points to 91.201.52.2, ns3.netangels.ru points to 45.86.39.2 and ns4.netangels.ru points to 80.87.101.2.
Mail Servers
Mail for itstudy.ru is handled by two mail servers — mx0.itstudy.ru and mx1.itstudy.ru.
Each of mx0.itstudy.ru and mx1.itstudy.ru has one IP address: mx0.itstudy.ru uses 91.201.54.7 and mx1.itstudy.ru uses 91.201.54.8.