cla.su - dns.ninja
cla.su
su
| 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=650210158 | ||||||
Subdomains
Same first word
Similar names
DNS History
11 records (6 active, 5 former)
●NSa.ns.selectel.ru2026-02-15 → 2026-08-10 · 3 obs
● 2026-02-15 21:09:58
● 2026-08-10 14:05:48
●NSb.ns.selectel.ru2026-02-15 → 2026-08-10 · 3 obs
● 2026-02-15 21:09:58
● 2026-08-10 14:05:48
●NSc.ns.selectel.ru2026-02-15 → 2026-08-10 · 3 obs
● 2026-02-15 21:09:58
● 2026-08-10 14:05:48
●NSd.ns.selectel.ru2026-02-15 → 2026-08-10 · 3 obs
● 2026-02-15 21:09:58
● 2026-08-10 14:05:48
○NSns.masterhost.ru2015-08-18 → 2017-07-28 · 4 obs
● 2017-07-28 08:37:34
○ 2026-02-15 21:09:58
○ 2026-08-10 14:05:48
○NSns1.masterhost.ru2015-08-18 → 2017-07-28 · 4 obs
● 2017-07-28 08:37:34
○ 2026-02-15 21:09:58
○ 2026-08-10 14:05:48
○NSns2.masterhost.ru2015-08-18 → 2017-07-28 · 4 obs
● 2017-07-28 08:37:34
○ 2026-02-15 21:09:58
○ 2026-08-10 14:05:48
●MXmail.cla.su2015-08-18 → 2026-08-10 · 2 obs
● 2026-08-10 14:05:48
○A195.114.112.122015-08-18 → 2017-01-28 · 4 obs
● 2017-01-28 21:35:14
○ 2017-03-16 11:56:50
○ 2026-08-10 14:05:48
○A195.114.112.1962017-03-16 → 2026-05-26 · 5 obs
● 2017-03-16 11:56:50
● 2026-05-26 04:39:30
○ 2026-06-29 13:06:00
○ 2026-08-10 14:05:48
●A195.114.112.1982026-06-29 → 2026-08-10 · 3 obs
● 2026-06-29 13:06:00
● 2026-08-10 14:05:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| su | a.dns.ripn.net, b.dns.ripn.net, c.tld-servers.ru, d.dns.ripn.net... | - |
| cla.su | a.ns.selectel.ru, b.ns.selectel.ru, c.ns.selectel.ru, d.ns.selectel.ru | - |
✅ Authoritative Response
Server:77.223.114.4
NS records: a.ns.selectel.ru, b.ns.selectel.ru, c.ns.selectel.ru, d.ns.selectel.ru
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cla.su (unsigned zone)
⏱️ Timing
Total: 1275ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 195.114.112.198 |
| NS | 4 | a.ns.selectel.ru, c.ns.selectel.ru... |
| MX | 1 | mail.cla.su (pri: 10) |
| TXT | 2 | v=spf1 mx ip4:195.114.112.12 ip4:94.247., google-site-verification=eH6UuJqr9kOJGs_ |
| SOA | 1 | a.ns.selectel.ru support.selectel.ru |
Analysis
Hierarchy
cla.su is the parent domain of www.cla.su and mail.cla.su.
IP Addresses
cla.su points to a single IP number: 195.114.112.198.
Other host names, among them class-assistance.com and at.com.ru, have IP numbers in common with cla.su.
Name Servers
cla.su has four authoritative name servers: a.ns.selectel.ru, b.ns.selectel.ru, c.ns.selectel.ru and d.ns.selectel.ru.
At least some of cla.su's name servers are shared with other domains, for example guide-by.com, ukit.space, auto-crane.ru and two more.
Four hostnames, each resolving to a pair of IP addresses: a.ns.selectel.ru directs to 188.68.203.1 and 2a00:ab00:800::2:53; b.ns.selectel.ru directs to 77.223.114.2 and 2a00:ab00:801::2:53; c.ns.selectel.ru directs to 188.68.203.3 and 2a00:ab00:802::2:53; d.ns.selectel.ru directs to 77.223.114.4 and 2a00:ab00:803::2:53.
Mail Servers
cla.su has one mail server: mail.cla.su.
cla.su, class-assistance.ru and class-assistance.com all share the same mail server setup.
mail.cla.su points to one IP number — 195.114.112.12.