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=1784296233 | ||||||
ru
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.dns.ripn.net ⭐ | ||||||
| NS | b.dns.ripn.net | ||||||
| NS | c.tld-servers.ru | ||||||
| NS | d.dns.ripn.net | ||||||
| NS | e.dns.ripn.net | ||||||
| NS | f.dns.ripn.net | ||||||
| SOA | a.dns.ripn.nethostmaster@ripn.net serial=4069811 | ||||||
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.io |
studyit.net |
studyit.co.nz |
studyit.govt.nz |
studyit.de |
DNS History
9 records (7 active, 2 former)
●NSns1.netangels.ru2015-06-24 → 2026-07-31 · 2 obs
● 2026-07-31 05:20:24
●NSns2.netangels.ru2015-06-24 → 2026-07-31 · 2 obs
● 2026-07-31 05:20:24
●NSns3.netangels.ru2016-08-03 → 2026-07-31 · 3 obs
● 2016-08-03 10:46:14
● 2026-07-31 05:20:24
●NSns4.netangels.ru2016-08-03 → 2026-07-31 · 3 obs
● 2016-08-03 10:46:14
● 2026-07-31 05:20:24
●MXmx0.itstudy.ru2015-06-24 → 2026-07-31 · 2 obs
● 2026-07-31 05:20:24
●MXmx1.itstudy.ru2015-06-24 → 2026-07-31 · 2 obs
● 2026-07-31 05:20:24
○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
○ 2026-07-31 05:20:24
●A91.201.52.1762026-02-21 → 2026-07-31 · 3 obs
● 2026-02-21 00:46:00
● 2026-07-31 05:20:24
○A91.201.52.482015-06-24 → 2016-01-28 · 4 obs
● 2016-01-28 07:52:22
○ 2016-04-24 03:41:26
○ 2026-07-31 05:20:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ru | a.dns.ripn.net, c.tld-servers.ru, b.dns.ripn.net, d.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: 1090ms | 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 (ns1.netangels.ru, ns2.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
The authoritative name servers for itstudy.ru are 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.