self-study.ru - dns.ninja
self-study.ru
| DNSSEC | ⚠️ Not signed | ||||||
| A | 37.143.11.11🇷🇺 EUROBYTE37.143.10.0/23 | ||||||
| PTR | vip-h6.ihc.ru | ||||||
| NS | ns1.ihc.ru ⭐ | ||||||
| A | 2a03:c980:beef:6002:46:254:23:52🇷🇺 EUROBYTE2a03:c980:beef::/48 | ||||||
| PTR | ns1.ihc.ru | ||||||
| A | 46.254.23.52🇷🇺 EUROBYTE46.254.23.0/24 | ||||||
| PTR | ns1.ihc.ru | ||||||
| NS | ns2.ihc.ru | ||||||
| A | 2001:41d0:1008:2c3b::1🇫🇷 OVH2001:41d0::/32 IPv6 | ||||||
| PTR | ns2.ihc.ru | ||||||
| A | 46.254.22.38🇷🇺 EUROBYTE46.254.22.0/24 | ||||||
| PTR | ns1.ihc.ru | ||||||
| A | 91.121.54.18🇫🇷 OVH91.121.0.0/16 ISP Paris, France | ||||||
| PTR | ns2.ihc.ru | ||||||
| MX | mail.self-study.ru ⭐ | ||||||
| A | 2a03:c980:dead:2a01:46:254:21:39🇷🇺 EUROBYTE2a03:c980:dead::/48 | ||||||
| PTR | vip-mail1.ihc.ru | ||||||
| A | 46.254.21.39🇷🇺 EUROBYTE46.254.20.0/23 | ||||||
| PTR | vip-mail1.ihc.ru | ||||||
| SOA | ns1.ihc.ruinfo@ihc.ru 2016-11-15 #1 | ||||||
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=4069464 | ||||||
Subdomains
mail.self-study.ru |
Same first word
Similar names
DNS History
6 records (4 active, 2 former)
●MXmail.self-study.ru2017-03-15 → 2026-07-02 · 2 obs
● 2026-07-02 06:39:44
○A2a03:c980::1:20:562017-03-15 → 2017-03-15 · 3 obs
○ 2020-01-18 08:28:46
○ 2026-07-02 06:39:44
○A2a03:c980:dead:1a06:37:143:11:112020-01-18 → 2020-01-18 · 4 obs
● 2020-01-18 08:28:46
○ 2026-02-23 07:42:52
○ 2026-07-02 06:39:44
●A37.143.11.112017-03-15 → 2026-07-02 · 2 obs
● 2026-07-02 06:39:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ru | a.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net, e.dns.ripn.net... | - |
| self-study.ru | ns2.ihc.ru, ns1.ihc.ru | 5 records |
✅ Authoritative Response
Server:46.254.23.52
NS records: ns2.ihc.ru, ns1.ihc.ru
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for self-study.ru (unsigned zone)
⏱️ Timing
Total: 1139ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 37.143.11.11 |
| NS | 2 | ns1.ihc.ru, ns2.ihc.ru |
| MX | 1 | mail.self-study.ru (pri: 10) |
| SOA | 1 | ns1.ihc.ru info.ihc.ru |
📌 Glue Records Collected
Total: 5
Out-of-bailiwick: 5 (ns2.ihc.ru, ns2.ihc.ru, ns1.ihc.ru...)
Analysis
Hierarchy
self-study.ru is the parent zone for mail.self-study.ru.
IP Addresses
self-study.ru points to a single IP number: 37.143.11.11.
Additional host names — ns2.it-prom.ru, urban-life.ru, consultingexpert.ru and two others — share IP numbers with self-study.ru.
Name Servers
self-study.ru has two authoritative name servers — ns1.ihc.ru and ns2.ihc.ru.
self-study.ru shares its name server setup with other domains, including bulcar.ru, summa-tech.ru, lookrussia.ru and two others.
The name servers for self-study.ru overlap at least partially with those of other domains — for example yampo.ru.
Host names with three IP numbers:
ns2.ihc.ru resolves to 46.254.22.38, 91.121.54.18 and 2001:41d0:1008:2c3b::1.
Host names with two IP numbers:
ns1.ihc.ru resolves to 46.254.23.52 and 2a03:c980:beef:6002:46:254:23:52.
Mail Servers
self-study.ru has one mail server: mail.self-study.ru.
The host mail.self-study.ru resolves to 46.254.21.39 and 2a03:c980:dead:2a01:46:254:21:39 — two IP addresses.