java-course.ru - robtex.com
java-course.ru
| DNSSEC | ⚠️ Not signed | ||||||
| A | 37.230.118.213🇷🇺 RU-JSCIOT37.230.118.0/23 | ||||||
| PTR | lake.multihost.cloud | ||||||
| NS | ns1.multihost.ru ⭐ | ||||||
| A | 82.202.173.207🇷🇺 RU-JSCIOT82.202.172.0/23 | ||||||
| PTR | ns1.multihost.ru | ||||||
| NS | ns2.multihost.ru | ||||||
| A | 188.120.255.7🇷🇺 RU-JSCIOT188.120.254.0/23 | ||||||
| PTR | ns2.multihost.ru | ||||||
| NS | ns3.multihost.ru ⚠️ Not in parent delegation | ||||||
| A | 188.120.255.7🇷🇺 RU-JSCIOT188.120.254.0/23 | ||||||
| PTR | ns2.multihost.ru | ||||||
| MX | java-course.ru ⭐ | ||||||
| A | 37.230.118.213🇷🇺 RU-JSCIOT37.230.118.0/23 | ||||||
| PTR | lake.multihost.cloud | ||||||
| TXT | v=spf1 ip4:37.230.118.213 ip4:37.230.118.162 ip4:37.230.118.162 ip4:185.42.12... | ||||||
| SOA | ns1.multihost.ruroot@lake.multihost.cloud 2026-05-05 #0 | ||||||
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=4069192 | ||||||
MX for
java-course.ru |
Same first word
java-course.ru |
Similar names
DNS History
6 records (5 active, 1 former)
●NSns1.multihost.ru2015-07-25 → 2026-06-09 · 2 obs
● 2026-06-09 15:27:02
●NSns2.multihost.ru2015-07-25 → 2026-06-09 · 2 obs
● 2026-06-09 15:27:02
●NSns3.multihost.ru2026-02-24 → 2026-06-09 · 3 obs
● 2026-02-24 04:57:46
● 2026-06-09 15:27:02
●MXjava-course.ru2015-07-25 → 2026-06-09 · 2 obs
● 2026-06-09 15:27:02
○A185.42.12.162015-07-25 → 2017-04-04 · 4 obs
● 2017-04-04 19:44:40
○ 2026-02-24 04:57:46
○ 2026-06-09 15:27:02
●A37.230.118.2132026-02-24 → 2026-06-09 · 3 obs
● 2026-02-24 04:57:46
● 2026-06-09 15:27:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ru | a.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net, e.dns.ripn.net... | - |
| java-course.ru | ns1.multihost.ru, ns2.multihost.ru | 2 records |
✅ Authoritative Response
Server:188.120.255.7
NS records: ns1.multihost.ru, ns2.multihost.ru
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for java-course.ru (unsigned zone)
⏱️ Timing
Total: 671ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 37.230.118.213 |
| NS | 3 | ns2.multihost.ru, ns3.multihost.ru... |
| MX | 1 | java-course.ru (pri: 0) |
| TXT | 1 | v=spf1 ip4:37.230.118.213 ip4:37.230.118 |
| SOA | 1 | ns1.multihost.ru root.lake.multihost.clo |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns2.multihost.ru, ns1.multihost.ru)
Analysis
Mail Server Role
java-course.ru handles its own mail, functioning as its own mail server.
IP Addresses
java-course.ru resolves to just one IP address, 37.230.118.213.
Two other host names, along with kcepokc.com, eltehcom.com and alvarov.com, also share IP numbers with java-course.ru.
Name Servers
java-course.ru carries NS records delegating to ns1.multihost.ru, ns2.multihost.ru and ns3.multihost.ru.
java-course.ru partially shares its NS delegation with several other domains, including r-ma.ru, culturerf.ru, delif.ru and two others.
These name servers are regularly seen alongside ex1.uninic.ru and ex2.uninic.ru as name servers.
Each of ns1.multihost.ru, ns2.multihost.ru and ns3.multihost.ru resolves to one IP address: ns1.multihost.ru to 82.202.173.207, and both ns2.multihost.ru and ns3.multihost.ru to 188.120.255.7.
ns2.multihost.ru along with ns3.multihost.ru each resolve to 188.120.255.7 IP addresses.
Mail Servers
java-course.ru is served by just one mail server: java-course.ru.
java-course.ru carries a single IP number, which is 37.230.118.213.