coursebook.ru - robtex.com
coursebook.ru
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=4069988 | ||||||
Subdomains
adobe-dns-2.coursebook.ru |
Same first word
coursebook.net |
coursebook.ru |
coursebook.co.uk |
coursebook.co.ke |
coursebook.de |
coursebook.xyz |
coursebook.ai |
coursebook.org |
coursebook.pl |
coursebook.eu |
coursebook.com |
Similar names
DNS History
14 records (9 active, 5 former)
●NSns1.beget.com2026-04-07 → 2026-08-14 · 3 obs
● 2026-04-07 21:27:38
● 2026-08-14 21:19:22
●NSns1.beget.pro2026-04-07 → 2026-08-14 · 3 obs
● 2026-04-07 21:27:38
● 2026-08-14 21:19:22
●NSns1.beget.ru2026-04-07 → 2026-08-14 · 6 obs
● 2026-04-07 21:27:38
● 2026-05-08 17:21:50
○ 2026-05-31 07:25:46
● 2026-06-09 14:47:06
● 2026-08-14 21:19:22
○NSns1.cishost.ru2015-05-29 → 2018-01-19 · 4 obs
● 2018-01-19 20:53:12
○ 2026-04-07 21:27:38
○ 2026-08-14 21:19:22
●NSns2.beget.com2026-04-07 → 2026-08-14 · 3 obs
● 2026-04-07 21:27:38
● 2026-08-14 21:19:22
●NSns2.beget.pro2026-04-07 → 2026-08-14 · 3 obs
● 2026-04-07 21:27:38
● 2026-08-14 21:19:22
●NSns2.beget.ru2026-04-07 → 2026-08-14 · 6 obs
● 2026-04-07 21:27:38
● 2026-05-08 17:21:50
○ 2026-05-31 07:25:46
● 2026-06-09 14:47:06
● 2026-08-14 21:19:22
○NSns2.cishost.ru2015-05-29 → 2018-01-19 · 4 obs
● 2018-01-19 20:53:12
○ 2026-04-07 21:27:38
○ 2026-08-14 21:19:22
○NSs10.cishost.ru2015-05-29 → 2018-01-19 · 4 obs
● 2018-01-19 20:53:12
○ 2026-04-07 21:27:38
○ 2026-08-14 21:19:22
●MXmx1.beget.com2026-04-07 → 2026-08-14 · 5 obs
● 2026-05-08 17:21:50
○ 2026-05-31 07:25:46
● 2026-06-09 14:47:06
● 2026-08-14 21:19:22
●MXmx2.beget.com2026-04-07 → 2026-08-14 · 5 obs
● 2026-05-08 17:21:50
○ 2026-05-31 07:25:46
● 2026-06-09 14:47:06
● 2026-08-14 21:19:22
○A109.234.159.2522015-05-29 → 2018-01-19 · 4 obs
● 2018-01-19 20:53:12
○ 2026-04-07 21:27:38
○ 2026-08-14 21:19:22
○A185.73.182.1052026-04-07 → 2026-05-08 · 5 obs
● 2026-04-07 21:27:38
● 2026-05-08 17:21:50
○ 2026-05-31 07:25:46
○ 2026-08-14 21:19:22
●A80.96.109.2362026-06-09 → 2026-08-14 · 3 obs
● 2026-06-09 14:47:06
● 2026-08-14 21:19:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ru | a.dns.ripn.net, d.dns.ripn.net, f.dns.ripn.net, b.dns.ripn.net... | - |
| coursebook.ru | ns1.beget.pro, ns1.beget.com, ns2.beget.pro, ns2.beget.com | - |
✅ Authoritative Response
Server:185.50.27.12
NS records: ns1.beget.pro, ns1.beget.com, ns2.beget.pro, ns2.beget.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for coursebook.ru (unsigned zone)
⏱️ Timing
Total: 1206ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 80.96.109.236 |
| NS | 6 | ns2.beget.ru, ns1.beget.ru... |
| MX | 2 | mx1.beget.com (pri: 10), mx2.beget.com (pri: 20) |
| TXT | 1 | v=spf1 redirect=beget.com |
| SOA | 1 | ns1.beget.com hostmaster.beget.com |
Analysis
Hierarchy
adobe-dns-2.coursebook.ru is delegated beneath coursebook.ru.
IP Addresses
coursebook.ru resolves to one IP address: 80.96.109.236.
5d3.ru, html.adobe-dns-2.coursebook.ru, php.html.apps.cvez.ru and two other host names share IP numbers with coursebook.ru.
Name Servers
coursebook.ru has 6 name servers — ns1.beget.com, ns2.beget.com, ns1.beget.pro and 3 others.
There is at least partial name server overlap between coursebook.ru and other domains — naviland.su, raian-rejnolds-lordfilm.ru, vyvod-iz-zapoya-rostov117.ru and two more among them.
The name servers ns2.beget.pro, ns1.beget.ru and ns2.beget.ru are often found in combination with these name servers.
Hosts with just one IP address:
ns1.beget.com resolves to 93.92.81.0.
ns2.beget.com resolves to 185.50.27.12.
ns1.beget.pro resolves to 93.92.81.0.
ns2.beget.pro resolves to 185.50.27.12.
ns1.beget.ru resolves to 5.101.159.11.
ns2.beget.ru resolves to 185.50.27.12.
The host names ns1.beget.com and ns1.beget.pro both resolve to 93.92.81.0 IP addresses.
The host names ns2.beget.com, ns2.beget.pro and ns2.beget.ru each resolve to 185.50.27.12.
Mail Servers
Mail for coursebook.ru is handled by two mail servers — mx1.beget.com and mx2.beget.com.
coursebook.ru uses an identical mail server configuration to several other domains — among them fob-india.ru, seo-kejsy2.ru, www.pav.ru and two more.
coursebook.ru and other domains — focusgroupmsk.com for instance — share at least some mail servers.
Hosts mx1.beget.com and mx2.beget.com resolve to four IP addresses each: mx1.beget.com points to 5.101.158.67, 5.101.158.68, 185.78.30.95 and 185.78.30.126, whereas mx2.beget.com points to 185.78.30.48, 185.78.30.71, 185.78.30.95 and 185.78.30.126.
The host names mx1.beget.com and mx2.beget.com both resolve to 185.78.30.95 IP addresses.
The host names mx1.beget.com and mx2.beget.com both resolve to 185.78.30.126 IP addresses.