rfstud.ru - dns.ninja
rfstud.ru
| DNSSEC | ⚠️ Not signed | ||||||
| A | 217.112.35.74🇷🇺 BIGWEB-AS217.112.35.0/24 | ||||||
| PTR | v75-u.valuehost.ru | ||||||
| NS | ns1.valuehost.ru ⭐ | ||||||
| A | 217.112.42.27🇷🇺 L7GUARD-AS217.112.42.0/23 VALUEHOST MSK 4 | ||||||
| PTR | ns1.valuehost.ru | ||||||
| NS | ns2.valuehost.ru | ||||||
| A | 217.112.37.10🇷🇺 L7GUARD-AS217.112.36.0/23 BIGWEB.HOST | ||||||
| PTR | ns2.valuehost.ru | ||||||
| NS | ns3.valuehost.ru ⚠️ Not in parent delegation | ||||||
| A | 217.112.37.28🇷🇺 L7GUARD-AS217.112.36.0/23 BIGWEB.HOST | ||||||
| PTR | ns3.valuehost.ru | ||||||
| MX | mx25.valuehost.ru ⭐ | ||||||
| A | 217.112.35.101🇷🇺 BIGWEB-AS217.112.35.0/24 | ||||||
| PTR | mx25.valuehost.ru | ||||||
| SOA | ns1.valuehost.runoc@valuehost.ru 2015-09-23 #64 | ||||||
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=4069968 | ||||||
Same first word
rfstud.ru |
Similar names
DNS History
6 records (5 active, 1 former)
●NSns1.valuehost.ru2015-07-12 → 2026-08-13 · 2 obs
● 2026-08-13 04:11:02
●NSns2.valuehost.ru2015-07-12 → 2026-08-13 · 2 obs
● 2026-08-13 04:11:02
●NSns3.valuehost.ru2015-07-12 → 2026-08-13 · 2 obs
● 2026-08-13 04:11:02
●MXmx25.valuehost.ru2015-07-12 → 2026-08-13 · 2 obs
● 2026-08-13 04:11:02
○A217.112.35.722015-07-12 → 2015-07-12 · 3 obs
○ 2015-11-12 17:22:42
○ 2026-08-13 04:11:02
●A217.112.35.742015-11-12 → 2026-08-13 · 3 obs
● 2015-11-12 17:22:42
● 2026-08-13 04:11:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ru | a.dns.ripn.net, b.dns.ripn.net, c.tld-servers.ru, d.dns.ripn.net... | - |
| rfstud.ru | ns1.valuehost.ru, ns2.valuehost.ru | 2 records |
✅ Authoritative Response
Server:217.112.37.10
NS records: ns1.valuehost.ru, ns2.valuehost.ru
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for rfstud.ru (unsigned zone)
⏱️ Timing
Total: 764ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 217.112.35.74 |
| NS | 3 | ns2.valuehost.ru, ns1.valuehost.ru... |
| MX | 1 | mx25.valuehost.ru (pri: 100) |
| SOA | 1 | ns1.valuehost.ru noc.valuehost.ru |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.valuehost.ru, ns2.valuehost.ru)
Analysis
IP Addresses
rfstud.ru resolves to one IP address: 217.112.35.74.
www.tv-games.ru, envimarit.ru, vniipo.ru and two other host names share IP numbers with rfstud.ru.
Name Servers
rfstud.ru has three name servers — ns1.valuehost.ru, ns2.valuehost.ru and ns3.valuehost.ru.
rfstud.ru partially shares its NS delegation with several other domains, including posm.cz, r-p-c.ru, frodo.ru and two others.
These name servers regularly co-occur with the name servers ns1.valuehost.com, ns2.valuehost.com and ns3.valuehost.com.
Each of the three hostnames points to exactly one IP address: ns1.valuehost.ru points to 217.112.42.27, ns2.valuehost.ru points to 217.112.37.10 and ns3.valuehost.ru points to 217.112.37.28.
Mail Servers
Mail for rfstud.ru is handled by a single mail server, mx25.valuehost.ru.
rfstud.ru uses an identical mail server configuration to several other domains — among them foxterrier.su, udin.org, frap-kmv.ru and two more.
rfstud.ru partially shares its mail servers with other domains, priborzavod.ru and codenlp.ru being examples.
mx25.valuehost.ru points to one IP number — 217.112.35.101.