grandstudy.ru - robtex.com
grandstudy.ru
| DNSSEC | ⚠️ Not signed | ||||||
| A | 185.43.6.7🇷🇺 RU-JSCIOT185.43.6.0/23 | ||||||
| PTR | sisweb.ru | ||||||
| NS | grandstudy.ru ⭐ | ||||||
| A | 185.43.6.7🇷🇺 RU-JSCIOT185.43.6.0/23 | ||||||
| PTR | sisweb.ru | ||||||
| NS | ns.grandstudy.ru | ||||||
| A | 185.43.6.7🇷🇺 RU-JSCIOT185.43.6.0/23 | ||||||
| PTR | sisweb.ru | ||||||
| NS | ns.sisweb.ru | ||||||
| A | 185.43.6.7🇷🇺 RU-JSCIOT185.43.6.0/23 | ||||||
| PTR | sisweb.ru | ||||||
| MX | grandstudy.ru ⭐ | ||||||
| A | 185.43.6.7🇷🇺 RU-JSCIOT185.43.6.0/23 | ||||||
| PTR | sisweb.ru | ||||||
| SOA | grandstudy.rudns@grandstudy.ru serial=2026020001 | ||||||
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=4068147 | ||||||
NS for
grandstudy.ru |
MX for
grandstudy.ru |
Subdomains
ns.grandstudy.ru |
Same first word
grandstudy.ru |
grandstudy.com |
DNS History
12 records (5 active, 7 former)
●NSgrandstudy.ru2015-06-26 → 2026-03-22 · 5 obs
● 2017-01-08 01:16:10
○ 2018-05-11 14:21:30
● 2026-03-01 12:14:56
● 2026-03-22 16:13:36
○NSmobi-host.com2018-05-11 → 2018-05-11 · 4 obs
● 2018-05-11 14:21:30
○ 2026-03-01 12:14:56
○ 2026-03-22 16:13:36
●NSns.grandstudy.ru2015-06-26 → 2026-03-22 · 5 obs
● 2017-01-08 01:16:10
○ 2018-05-11 14:21:30
● 2026-03-01 12:14:56
● 2026-03-22 16:13:36
●NSns.sisweb.ru2015-06-26 → 2026-03-22 · 5 obs
● 2017-01-08 01:16:10
○ 2018-05-11 14:21:30
● 2026-03-01 12:14:56
● 2026-03-22 16:13:36
○NSns5.hosting.reg.ru2018-05-11 → 2018-05-11 · 4 obs
● 2018-05-11 14:21:30
○ 2026-03-01 12:14:56
○ 2026-03-22 16:13:36
○NSns6.hosting.reg.ru2018-05-11 → 2018-05-11 · 4 obs
● 2018-05-11 14:21:30
○ 2026-03-01 12:14:56
○ 2026-03-22 16:13:36
○MXemx.mail.ru2017-01-08 → 2017-01-08 · 3 obs
○ 2018-05-11 14:21:30
○ 2026-03-22 16:13:36
●MXgrandstudy.ru2026-03-01 → 2026-03-22 · 3 obs
● 2026-03-01 12:14:56
● 2026-03-22 16:13:36
○MXmail.grandstudy.ru2018-05-11 → 2018-05-11 · 4 obs
● 2018-05-11 14:21:30
○ 2026-03-01 12:14:56
○ 2026-03-22 16:13:36
○A178.63.95.1312015-06-26 → 2017-01-08 · 4 obs
● 2017-01-08 01:16:10
○ 2018-05-11 14:21:30
○ 2026-03-22 16:13:36
●A185.43.6.72026-03-01 → 2026-03-22 · 3 obs
● 2026-03-01 12:14:56
● 2026-03-22 16:13:36
○A194.58.121.882018-05-11 → 2018-05-11 · 4 obs
● 2018-05-11 14:21:30
○ 2026-03-01 12:14:56
○ 2026-03-22 16:13:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ru | a.dns.ripn.net, e.dns.ripn.net, f.dns.ripn.net, b.dns.ripn.net... | - |
| grandstudy.ru | ns.grandstudy.ru, ns.sisweb.ru | 2 records |
✅ Authoritative Response
Server: 185.43.6.7
NS records: ns.grandstudy.ru, ns.sisweb.ru
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for grandstudy.ru (unsigned zone)
⏱️ Timing
Total: 679ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 185.43.6.7 |
| NS | 2 | ns.sisweb.ru, ns.grandstudy.ru |
| MX | 1 | grandstudy.ru (pri: 10) |
| SOA | 1 | grandstudy.ru dns.grandstudy.ru |
📌 Glue Records Collected
Total: 2
In-bailiwick: 1 (ns.grandstudy.ru)
Out-of-bailiwick: 1 (ns.sisweb.ru)
Analysis
Hierarchy
grandstudy.ru is the parent of ns.grandstudy.ru.
Name Server Role
For grandstudy.ru, grandstudy.ru serves as a name server for grandstudy.ru.
ns.grandstudy.ru and ns.sisweb.ru commonly serve as name servers together with grandstudy.ru.
Mail Server Role
grandstudy.ru serves as the mail server for grandstudy.ru.
IP Addresses
grandstudy.ru points to IP number 185.43.6.7.
For instance, other host names ns.sisweb.ru, btis.ru, ns.grandstudy.ru, 24-shops.ru and sisweb.ru share IP numbers with grandstudy.ru.
Name Servers
grandstudy.ru is delegated to three name servers: grandstudy.ru, ns.grandstudy.ru and ns.sisweb.ru.
grandstudy.ru shares name servers with other domains at least partially, for example ribnic.ru, rfpay.ru, mixh.ru, enjoynow.ru and btis.ru.
Host names with one IP number:
grandstudy.ru points to: 185.43.6.7
ns.grandstudy.ru points to: 185.43.6.7
ns.sisweb.ru points to: 185.43.6.7
Host names that point to 185.43.6.7: grandstudy.ru, ns.grandstudy.ru and ns.sisweb.ru
Mail Servers
grandstudy.ru is handled by a single mail server, grandstudy.ru.