algocourses.ru - robtex.com
algocourses.ru
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=4068862 | ||||||
Subdomains
wiki.algocourses.ru |
Same first word
algocourses.ru |
Similar names
agrsolucoes.com |
goalcourses.com |
acolseguros.com |
coalseguros.com |
sourcegoals.com |
agrsolucoes.com.br |
coursegoals.com |
DNS History
9 records (9 active, 0 former)
●NSns1.selectel.org2026-04-12 → 2026-05-13 · 2 obs
● 2026-05-13 17:42:26
●NSns1.selectel.ru2026-04-12 → 2026-05-13 · 2 obs
● 2026-05-13 17:42:26
●NSns2.selectel.org2026-04-12 → 2026-05-13 · 2 obs
● 2026-05-13 17:42:26
●NSns2.selectel.ru2026-04-12 → 2026-05-13 · 2 obs
● 2026-05-13 17:42:26
●NSns3.selectel.org2026-04-12 → 2026-05-13 · 2 obs
● 2026-05-13 17:42:26
●NSns3.selectel.ru2026-04-12 → 2026-05-13 · 2 obs
● 2026-05-13 17:42:26
●NSns4.selectel.org2026-04-12 → 2026-05-13 · 2 obs
● 2026-05-13 17:42:26
●NSns4.selectel.ru2026-04-12 → 2026-05-13 · 2 obs
● 2026-05-13 17:42:26
●A82.148.21.1062026-04-12 → 2026-05-13 · 2 obs
● 2026-05-13 17:42:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ru | a.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net, e.dns.ripn.net... | - |
| algocourses.ru | ns3.selectel.org, ns2.selectel.org, ns1.selectel.org, ns4.selectel.org | - |
✅ Authoritative Response
Server:188.68.203.5
NS records: ns3.selectel.org, ns2.selectel.org, ns1.selectel.org, ns4.selectel.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for algocourses.ru (unsigned zone)
⏱️ Timing
Total: 2631ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 82.148.21.106 |
| NS | 4 | ns4.selectel.ru, ns2.selectel.ru... |
| SOA | 1 | ns1.selectel.ru support.selectel.ru |
Analysis
Hierarchy
wiki.algocourses.ru is a child of algocourses.ru.
IP Addresses
algocourses.ru resolves to one IP number: 82.148.21.106.
Other host names, for example wiki.algocourses.ru, share IP numbers with algocourses.ru.
Name Servers
algocourses.ru is delegated to eight name servers: ns1.selectel.org, ns2.selectel.org, ns3.selectel.org, ns4.selectel.org, ns1.selectel.ru, ns2.selectel.ru, ns3.selectel.ru and ns4.selectel.ru.
algocourses.ru at least partially shares name servers with other domains, including machines.ru, i.13.yt, web-str3.ru, sibkom.tomsk.ru and moya-planeta.ru.
These name servers are commonly used with ns8-l2.nic.ru.
Host names with two IP numbers
The host names resolve to pairs of IP numbers:
ns1.selectel.org points to 2a00:ab00:800::53 and 188.68.203.10.
ns2.selectel.org points to 2a00:ab00:801::53 and 77.223.114.5.
ns3.selectel.org points to 2a00:ab00:802::53 and 188.68.203.5.
ns4.selectel.org points to 2a00:ab00:803::53 and 77.223.114.10.
ns1.selectel.ru points to 2a00:ab00:800::53 and 188.68.203.10.
ns2.selectel.ru points to 2a00:ab00:801::53 and 77.223.114.5.
ns3.selectel.ru points to 2a00:ab00:802::53 and 188.68.203.5.
ns4.selectel.ru points to 2a00:ab00:803::53 and 77.223.114.10.
Names that resolve to 2a00:ab00:800::53: ns1.selectel.org and ns1.selectel.ru.
Names that resolve to 188.68.203.10: ns1.selectel.org and ns1.selectel.ru.
Names that resolve to 2a00:ab00:801::53: ns2.selectel.org and ns2.selectel.ru.
Names that resolve to 77.223.114.5: ns2.selectel.org and ns2.selectel.ru.
Names that resolve to 2a00:ab00:802::53: ns3.selectel.org and ns3.selectel.ru.
Names that resolve to 188.68.203.5: ns3.selectel.org and ns3.selectel.ru.
Names that resolve to 2a00:ab00:803::53: ns4.selectel.org and ns4.selectel.ru.
Names that resolve to 77.223.114.10: ns4.selectel.org and ns4.selectel.ru.