coursealgorithm.ru - robtex.com
coursealgorithm.ru
| DNSSEC | ⚠️ Not signed | ||||||
| A | 185.65.148.19🇷🇺 HLL-AS185.65.148.0/23 HLL | ||||||
| NS | ns2.getcourse.ru ⭐ | ||||||
| NS | ns1.getcourse.ru | ||||||
| A | 95.213.207.67🇷🇺 SELECTEL95.213.207.0/24 -NET | ||||||
| NS | ns2.gcloudns.com | ||||||
| A | 77.105.172.20🇷🇺 SELECTEL-MSK77.105.172.0/23 Selectel Route Object | ||||||
| NS | ns3.getcourse.ru | ||||||
| A | 31.41.155.39🇷🇺 SELECTEL31.41.154.0/23 Selectel Route Object | ||||||
| MX | emx.mail.ru ⭐ | ||||||
| A | 94.100.180.180🇷🇺 VK-AS94.100.176.0/20 Moscow region | ||||||
| PTR | emx.mail.ru | ||||||
| A | 217.69.139.180🇷🇺 VK-AS217.69.128.0/20 Moscow region | ||||||
| PTR | emx.mail.ru | ||||||
| TXT | mailru-domain: qdwPJ6PD1GHsdyyH | ||||||
| TXT | v=spf1 include:58b0857493af2f67a217a9727f0dfb24.gca.to include:_spf.mail.ru ~all | ||||||
| SOA | ns2.getcourse.ruhostmaster@coursealgorithm.ru serial=2 | ||||||
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=4070486 | ||||||
Same first word
coursealgorithm.ru |
Similar names
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DNS History
6 records (6 active, 0 former)
●NSns1.getcourse.ru2026-09-19 → 2026-09-25 · 2 obs
● 2026-09-25 01:59:32
●NSns2.gcloudns.com2026-09-19 → 2026-09-25 · 2 obs
● 2026-09-25 01:59:32
●NSns2.getcourse.ru2026-09-25 → 2026-09-25 · 3 obs
● 2026-09-25 01:59:28
● 2026-09-25 01:59:32
●NSns3.getcourse.ru2026-09-19 → 2026-09-25 · 2 obs
● 2026-09-25 01:59:32
●A185.65.148.192026-09-19 → 2026-09-25 · 2 obs
● 2026-09-25 01:59:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ru | a.dns.ripn.net, b.dns.ripn.net, c.tld-servers.ru, d.dns.ripn.net... | - |
| coursealgorithm.ru | ns1.getcourse.ru, ns2.gcloudns.com, ns3.getcourse.ru | - |
✅ Authoritative Response
Server:31.41.155.39
NS records: ns1.getcourse.ru, ns2.gcloudns.com, ns3.getcourse.ru
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for coursealgorithm.ru (unsigned zone)
⏱️ Timing
Total: 1451ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 185.65.148.19 |
| NS | 3 | ns3.getcourse.ru, ns2.gcloudns.com... |
| MX | 1 | emx.mail.ru (pri: 10) |
| TXT | 2 | mailru-domain: qdwPJ6PD1GHsdyyH, v=spf1 include:58b0857493af2f67a217a9727 |
| SOA | 1 | ns3.getcourse.ru hostmaster.coursealgori |
Analysis
IP Addresses
coursealgorithm.ru resolves to one IP address: 185.65.148.19.
selfyoga.ru, alena-mindfulnutrition.site, mail.webacadem.com and two other host names share IP numbers with coursealgorithm.ru.
Name Servers
The authoritative name servers for coursealgorithm.ru are ns2.gcloudns.com, ns1.getcourse.ru, ns2.getcourse.ru and ns3.getcourse.ru.
There is at least partial name server overlap between coursealgorithm.ru and other domains — marichevakurs.ru, facevitonika.com, udschool.info and two more among them.
These name servers frequently co-occur with the name servers ns1.gcloudns.com and ns3.gcloudns.com.
Three hostnames, one IP address apiece: ns2.gcloudns.com resolves to 77.105.172.20, ns1.getcourse.ru resolves to 95.213.207.67 and ns3.getcourse.ru resolves to 31.41.155.39.
Mail Servers
Mail for coursealgorithm.ru is handled by a single mail server, emx.mail.ru.
coursealgorithm.ru uses an identical mail server configuration to several other domains — among them stv-performance.ru, 25bowls.ru, accordlab.ru and two more.
coursealgorithm.ru has at least partial mail server overlap with other domains such as redkins.ru, verbaoptom.ru, contact23.ru and two more.
emx.mail.ru carries two IP numbers: 94.100.180.180 and 217.69.139.180.