lessons.courses - dns.ninja
lessons.courses
| DNSSEC | ⚠️ Not signed | ||||||
| A | 37.48.249.96🇷🇺 SELECTEL-MSK37.48.248.0/23 Selectel Route Object | ||||||
| A | 77.223.121.8🇷🇺 SELECTEL-MSK77.223.120.0/23 Selectel Route Object | ||||||
| A | 185.189.195.45🇷🇺 SELECTEL-MSK185.189.195.0/24 Selectel Route Object | ||||||
| NS | ns1.chatium.io ⭐ | ||||||
| A | 158.160.211.254🇷🇺 YandexCloud158.160.0.0/16 | ||||||
| NS | ns2.chatium.io | ||||||
| A | 46.101.106.138🇩🇪 DIGITALOCEAN46.101.96.0/19 DigitalOcean | ||||||
| PTR | ns2.chatium.io | ||||||
| SOA | ns1.chatium.iohostmaster@lessons.courses 2026-07-21 #2 | ||||||
courses
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.nic.courses ⭐ | ||||||
| NS | b.nic.courses | ||||||
| NS | c.nic.courses | ||||||
| NS | x.nic.courses | ||||||
| NS | y.nic.courses | ||||||
| NS | z.nic.courses | ||||||
| SOA | a.nic.coursesadmin@tldns.godaddy serial=1784891663 | ||||||
Subdomains
www.lessons.courses |
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSns1.chatium.io2026-07-22 → 2026-07-24 · 2 obs
● 2026-07-24 11:26:14
●NSns2.chatium.io2026-07-22 → 2026-07-24 · 2 obs
● 2026-07-24 11:26:14
●A185.189.195.452026-07-22 → 2026-07-24 · 2 obs
● 2026-07-24 11:26:14
●A37.48.249.962026-07-22 → 2026-07-24 · 2 obs
● 2026-07-24 11:26:14
●A77.223.121.82026-07-22 → 2026-07-24 · 2 obs
● 2026-07-24 11:26:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| courses | a.nic.courses, b.nic.courses, c.nic.courses, x.nic.courses... | 12 records |
| lessons.courses | ns1.chatium.io, ns2.chatium.io | - |
✅ Authoritative Response
Server:158.160.211.254
NS records: ns1.chatium.io, ns2.chatium.io
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for lessons.courses (unsigned zone)
⏱️ Timing
Total: 638ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 3 | 77.223.121.8, 185.189.195.45... |
| NS | 2 | ns1.chatium.io, ns2.chatium.io |
| SOA | 1 | ns1.chatium.io hostmaster.lessons.course |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (a.nic.courses, a.nic.courses, b.nic.courses...)
Analysis
Hierarchy
lessons.courses is the parent zone for www.lessons.courses.
IP Addresses
The hostname lessons.courses resolves to three IP addresses: 37.48.249.96, 77.223.121.8 and 185.189.195.45.
puzzlebrain.ru, admin.funkeys.ru, studiomore.ru and two other host names share IP numbers with lessons.courses.
Name Servers
lessons.courses uses two name servers for its delegation: ns1.chatium.io and ns2.chatium.io.
lessons.courses uses the same name servers as several other domains — among them urmarsson-msk.ru, yunev.ru, elitdecor44.ru and two more.
ns1.chatium.io resolves to 158.160.211.254. ns2.chatium.io resolves to 46.101.106.138. Both host names point to a single IP number.