irkstudy.ru - dns.ninja
irkstudy.ru
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=4069731 | ||||||
Subdomains
www.irkstudy.ru |
Same first word
irkstudy.ru |
DNS History
13 records (8 active, 5 former)
○NSexp1.nameself.com2026-03-16 → 2026-03-20 · 5 obs
● 2026-03-16 18:55:50
● 2026-03-20 21:38:00
○ 2026-04-04 04:04:30
○ 2026-07-24 12:46:54
○NSexp2.nameself.com2026-03-16 → 2026-03-20 · 5 obs
● 2026-03-16 18:55:50
● 2026-03-20 21:38:00
○ 2026-04-04 04:04:30
○ 2026-07-24 12:46:54
●NSns1.timeweb.ru2015-05-08 → 2026-07-24 · 6 obs
● 2026-03-11 04:04:04
○ 2026-03-16 18:55:50
○ 2026-03-20 21:38:00
● 2026-04-04 04:04:30
● 2026-07-24 12:46:54
●NSns2.timeweb.ru2015-05-08 → 2026-07-24 · 6 obs
● 2026-03-11 04:04:04
○ 2026-03-16 18:55:50
○ 2026-03-20 21:38:00
● 2026-04-04 04:04:30
● 2026-07-24 12:46:54
●NSns3.timeweb.org2015-05-08 → 2026-07-24 · 6 obs
● 2026-03-11 04:04:04
○ 2026-03-16 18:55:50
○ 2026-03-20 21:38:00
● 2026-04-04 04:04:30
● 2026-07-24 12:46:54
●NSns4.timeweb.org2015-05-08 → 2026-07-24 · 6 obs
● 2026-03-11 04:04:04
○ 2026-03-16 18:55:50
○ 2026-03-20 21:38:00
● 2026-04-04 04:04:30
● 2026-07-24 12:46:54
●MXmx.yandex.ru2015-05-08 → 2026-07-24 · 6 obs
● 2026-03-11 04:04:04
○ 2026-03-16 18:55:50
○ 2026-03-20 21:38:00
● 2026-04-04 04:04:30
● 2026-07-24 12:46:54
●MXmx2.yandex.ru2015-05-08 → 2026-07-24 · 6 obs
● 2026-03-11 04:04:04
○ 2026-03-16 18:55:50
○ 2026-03-20 21:38:00
● 2026-04-04 04:04:30
● 2026-07-24 12:46:54
●A2a03:6f00:1::5c35:608f2026-02-23 → 2026-07-24 · 7 obs
● 2026-02-23 00:10:08
● 2026-03-11 04:04:04
○ 2026-03-16 18:55:50
○ 2026-03-20 21:38:00
● 2026-04-04 04:04:30
● 2026-07-24 12:46:54
○A2a03:6f00:1::5c35:710a2015-05-08 → 2016-09-11 · 4 obs
● 2016-09-11 13:58:24
○ 2026-02-23 00:10:08
○ 2026-07-24 12:46:54
○A88.212.208.672026-03-16 → 2026-03-20 · 5 obs
● 2026-03-16 18:55:50
● 2026-03-20 21:38:00
○ 2026-04-04 04:04:30
○ 2026-07-24 12:46:54
○A92.53.113.102015-05-08 → 2016-09-11 · 4 obs
● 2016-09-11 13:58:24
○ 2026-02-23 00:10:08
○ 2026-07-24 12:46:54
●A92.53.96.1432026-02-23 → 2026-07-24 · 7 obs
● 2026-02-23 00:10:08
● 2026-03-11 04:04:04
○ 2026-03-16 18:55:50
○ 2026-03-20 21:38:00
● 2026-04-04 04:04:30
● 2026-07-24 12:46:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ru | a.dns.ripn.net, b.dns.ripn.net, c.tld-servers.ru, d.dns.ripn.net... | - |
| irkstudy.ru | ns1.timeweb.ru, ns2.timeweb.ru | 2 records |
✅ Authoritative Response
Server:85.193.93.85
NS records: ns1.timeweb.ru, ns2.timeweb.ru
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for irkstudy.ru (unsigned zone)
⏱️ Timing
Total: 3714ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 92.53.96.143 |
| AAAA | 1 | 2a03:6f00:1::5c35:608f |
| NS | 4 | ns4.timeweb.org, ns1.timeweb.ru... |
| MX | 2 | mx.yandex.ru (pri: 10), mx2.yandex.ru (pri: 20) |
| TXT | 1 | v=spf1 ip4:92.53.116.0/22 ip4:92.53.96.0 |
| SOA | 1 | ns1.timeweb.ru dns.timeweb.ru |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns2.timeweb.ru, ns1.timeweb.ru)
Analysis
Hierarchy
irkstudy.ru is the parent zone for www.irkstudy.ru.
IP Addresses
irkstudy.ru resolves to the IP addresses 92.53.96.143 and 2a03:6f00:1::5c35:608f
macrooptica.ru, www.autodiscover.oaodsm.ru, igs-russia.ru plus two other host names have IP numbers in common with irkstudy.ru.
Name Servers
Four name servers handle the delegation for irkstudy.ru: ns3.timeweb.org, ns4.timeweb.org, ns1.timeweb.ru and ns2.timeweb.ru.
irkstudy.ru partially shares its NS delegation with several other domains, including dbglab.ru, fenixforum.ru, environmentalgoods.ru and two others.
ns3.timeweb.org, ns4.timeweb.org, ns1.timeweb.ru and ns2.timeweb.ru each carry two IP addresses. ns3.timeweb.org has 217.78.234.130 and 2a03:6f07:4::2; ns4.timeweb.org has 139.45.249.139 and 2a00:65e0:6:5:232a::2; ns1.timeweb.ru has 85.193.93.93 and 2a03:6f04:dead:bee::1; ns2.timeweb.ru has 85.193.93.85 and 2a03:6f04:dead:bee::2.
Mail Servers
irkstudy.ru uses two mail servers, mx2.yandex.ru and mx.yandex.ru.
The mail server setup of irkstudy.ru matches that of other domains such as chiphome.ru, kodovoe-slovo.ru, giper-spb.ru and two others.
At least some of the mail servers used by irkstudy.ru are shared with other domains: r3r-srr.ru, www.ridcom.ru, ds01.nsportal.ru and two others among them.
The mail servers mx1.yandex.ru, mx3.yandex.ru and mx.yandex.net frequently co-occur with these mail servers.
Host names pointing to two IP addresses:
mx.yandex.ru maps to two IP addresses — 77.88.21.249 and 2a02:6b8::311.
Host names resolving to a single IP address:
mx2.yandex.ru points to the IP address 77.88.21.249.
These two host names — mx.yandex.ru and mx2.yandex.ru — each point to 77.88.21.249 IP addresses.