studd.ru - robtex.com
studd.ru
| DNSSEC | ⚠️ Not signed | ||||||
| A | 78.24.221.104🇷🇺 RU-JSCIOT78.24.216.0/21 | ||||||
| PTR | ctgrupp.ru | ||||||
| NS | firstvds.ru ⭐ | ||||||
| A | 37.230.118.233🇷🇺 RU-JSCIOT37.230.118.0/23 | ||||||
| PTR | firstvds.ru | ||||||
| NS | ns1.firstvds.ru | ||||||
| A | 2a01:230:2:74::3🇷🇺 RU-JSCIOT2a01:230:2::/48 | ||||||
| A | 82.146.43.2🇷🇺 RU-JSCIOT82.146.40.0/21 | ||||||
| PTR | ns1.firstvds.ru | ||||||
| NS | ns2.firstvds.ru | ||||||
| A | 2a01:230:2:75::3🇷🇺 RU-JSCIOT2a01:230:2::/48 | ||||||
| A | 94.250.248.160🇷🇺 RU-JSCIOT94.250.248.0/23 | ||||||
| PTR | ns2.firstvds.ru | ||||||
| MX | mail.studd.ru ⭐ | ||||||
| A | 78.24.221.104🇷🇺 RU-JSCIOT78.24.216.0/21 | ||||||
| PTR | ctgrupp.ru | ||||||
| TXT | v=spf1 ip4:78.24.221.104 a mx ~all | ||||||
| SOA | firstvds.ruroot@ctgrupp.ru 2022-07-20 #0 | ||||||
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=4070020 | ||||||
Previously MX for
studd.ru |
Subdomains
Same first word
Similar names
uddst.com |
dustd.dev |
ddust.com |
dstud.io |
dstud.ru |
ddstu.cn |
dusdt.vip |
dusdt.com |
ddust.it |
dstud.com |
dsdut.org |
dustd.com |
dduts.com |
DNS History
15 records (5 active, 10 former)
●NSfirstvds.ru2026-06-08 → 2026-08-17 · 3 obs
● 2026-06-08 13:48:10
● 2026-08-17 11:43:30
●NSns1.firstvds.ru2026-06-08 → 2026-08-17 · 3 obs
● 2026-06-08 13:48:10
● 2026-08-17 11:43:30
●NSns2.firstvds.ru2026-06-08 → 2026-08-17 · 3 obs
● 2026-06-08 13:48:10
● 2026-08-17 11:43:30
○NSns215.host-telecom.com2015-07-21 → 2016-07-15 · 4 obs
● 2016-07-15 10:20:54
○ 2017-03-25 22:59:36
○ 2026-08-17 11:43:30
○NSns216.host-telecom.com2015-07-21 → 2016-07-15 · 4 obs
● 2016-07-15 10:20:54
○ 2017-03-25 22:59:36
○ 2026-08-17 11:43:30
○NSns4.ukrdns.biz2017-03-25 → 2017-03-25 · 4 obs
● 2017-03-25 22:59:36
○ 2026-06-08 13:48:10
○ 2026-08-17 11:43:30
○NSns5.ukrdns.biz2017-03-25 → 2017-03-25 · 4 obs
● 2017-03-25 22:59:36
○ 2026-06-08 13:48:10
○ 2026-08-17 11:43:30
○NSns6.ukrdns.biz2017-03-25 → 2017-03-25 · 4 obs
● 2017-03-25 22:59:36
○ 2026-06-08 13:48:10
○ 2026-08-17 11:43:30
●MXmail.studd.ru2026-06-08 → 2026-08-17 · 3 obs
● 2026-06-08 13:48:10
● 2026-08-17 11:43:30
○MXmail2.hosting.ua2017-03-25 → 2017-03-25 · 4 obs
● 2017-03-25 22:59:36
○ 2026-06-08 13:48:10
○ 2026-08-17 11:43:30
○MXstudd.ru2015-07-21 → 2016-07-15 · 4 obs
● 2016-07-15 10:20:54
○ 2017-03-25 22:59:36
○ 2026-08-17 11:43:30
○A78.109.16.372017-03-25 → 2017-03-25 · 4 obs
● 2017-03-25 22:59:36
○ 2026-06-08 13:48:10
○ 2026-08-17 11:43:30
●A78.24.221.1042026-06-08 → 2026-08-17 · 3 obs
● 2026-06-08 13:48:10
● 2026-08-17 11:43:30
○A89.188.104.92015-07-21 → 2015-07-21 · 3 obs
○ 2015-12-19 05:11:36
○ 2026-08-17 11:43:30
○A91.109.201.1192015-12-19 → 2016-07-15 · 5 obs
● 2015-12-19 05:11:36
● 2016-07-15 10:20:54
○ 2017-03-25 22:59:36
○ 2026-08-17 11:43:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ru | a.dns.ripn.net, b.dns.ripn.net, c.tld-servers.ru, d.dns.ripn.net... | - |
| studd.ru | ns1.firstvds.ru, ns2.firstvds.ru | 2 records |
✅ Authoritative Response
Server:94.250.248.160
NS records: ns1.firstvds.ru, ns2.firstvds.ru
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for studd.ru (unsigned zone)
⏱️ Timing
Total: 704ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 78.24.221.104 |
| NS | 2 | ns1.firstvds.ru, ns2.firstvds.ru |
| MX | 2 | mail.studd.ru (pri: 10), mail.studd.ru (pri: 20) |
| TXT | 1 | v=spf1 ip4:78.24.221.104 a mx ~all |
| SOA | 1 | firstvds.ru root.ctgrupp.ru |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns2.firstvds.ru, ns1.firstvds.ru)
Analysis
Hierarchy
studd.ru is the parent domain of www.studd.ru and mail.studd.ru.
IP Addresses
studd.ru points to a single IP number: 78.24.221.104.
Additional host names — mail.kinowizard.ru, academydance.ru, gazeta42.ru and two others — share IP numbers with studd.ru.
Name Servers
studd.ru is delegated to three name servers: firstvds.ru, ns1.firstvds.ru and ns2.firstvds.ru.
There is at least partial name server overlap between studd.ru and other domains — jks-trg.ru, vakir.ru, kasta72.ru and two more among them.
These name servers tend to appear in combination with the name servers ns1.example.com, ns2.example.com, intai.ru and miklbel18.ru.
Host names with two IP numbers:
ns1.firstvds.ru points to 82.146.43.2 and 2a01:230:2:74::3.
ns2.firstvds.ru points to 94.250.248.160 and 2a01:230:2:75::3.
Host names pointing to a single IP address:
firstvds.ru points to 37.230.118.233.
Mail Servers
studd.ru has one mail server: mail.studd.ru.
mail.studd.ru resolves to a single IP number: 78.24.221.104.