1class.su - dns.ninja
1class.su
su
| 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=650209816 | ||||||
Same first word
1class.co.il |
1class.at |
1class.se |
1class.info |
1class.ro |
1class.app |
1class.su |
1class.dk |
1class.net |
1class.it |
1class.co.uk |
1class.ru |
1class.kg |
1class.com |
1class.de |
Similar names
class1.cz |
class1.k12.ar.us |
class1.com.br |
class1.com |
class1.co.kr |
class1.media |
class1.dk |
class1.co.uk |
class1.jp |
class1.net |
class1.fi |
class1.ru |
class1.cn |
class1.de |
DNS History
17 records (12 active, 5 former)
●NSns.masterhost.ru2015-07-04 → 2026-07-13 · 2 obs
● 2026-07-13 03:20:12
●NSns1.masterhost.ru2015-07-04 → 2026-07-13 · 2 obs
● 2026-07-13 03:20:12
●NSns2.masterhost.ru2015-07-04 → 2026-07-13 · 2 obs
● 2026-07-13 03:20:12
●MXmx1.masterhost.ru2015-07-04 → 2026-07-13 · 2 obs
● 2026-07-13 03:20:12
●A2a00:15f8:a000:5:1:11:0:98752015-07-04 → 2026-07-13 · 2 obs
● 2026-07-13 03:20:12
●A2a00:15f8:a000:5:1:12:0:98752015-07-04 → 2026-07-13 · 2 obs
● 2026-07-13 03:20:12
●A2a00:15f8:a000:5:1:13:0:98752015-07-04 → 2026-07-13 · 2 obs
● 2026-07-13 03:20:12
●A2a00:15f8:a000:5:1:14:0:98752015-07-04 → 2026-07-13 · 2 obs
● 2026-07-13 03:20:12
○A90.156.201.1002015-07-04 → 2017-02-14 · 4 obs
● 2017-02-14 16:08:04
○ 2026-02-15 13:33:24
○ 2026-07-13 03:20:12
○A90.156.201.1042016-06-29 → 2017-02-14 · 5 obs
● 2016-06-29 16:11:04
● 2017-02-14 16:08:04
○ 2026-02-15 13:33:24
○ 2026-07-13 03:20:12
●A90.156.201.1102026-02-15 → 2026-07-13 · 3 obs
● 2026-02-15 13:33:24
● 2026-07-13 03:20:12
●A90.156.201.1112026-02-15 → 2026-07-13 · 3 obs
● 2026-02-15 13:33:24
● 2026-07-13 03:20:12
○A90.156.201.312015-07-04 → 2016-05-30 · 4 obs
● 2016-05-30 23:04:50
○ 2016-06-29 16:11:04
○ 2026-07-13 03:20:12
○A90.156.201.412015-07-04 → 2017-02-14 · 4 obs
● 2017-02-14 16:08:04
○ 2026-02-15 13:33:24
○ 2026-07-13 03:20:12
●A90.156.201.802026-02-15 → 2026-07-13 · 3 obs
● 2026-02-15 13:33:24
● 2026-07-13 03:20:12
○A90.156.201.832015-07-04 → 2017-02-14 · 4 obs
● 2017-02-14 16:08:04
○ 2026-02-15 13:33:24
○ 2026-07-13 03:20:12
●A90.156.201.932026-02-15 → 2026-07-13 · 3 obs
● 2026-02-15 13:33:24
● 2026-07-13 03:20:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| su | a.dns.ripn.net, f.dns.ripn.net, e.dns.ripn.net, b.dns.ripn.net... | 10 records |
| 1class.su | ns1.masterhost.ru, ns2.masterhost.ru, ns.masterhost.ru | - |
✅ Authoritative Response
Server:90.156.137.50
NS records: ns1.masterhost.ru, ns2.masterhost.ru, ns.masterhost.ru
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 1class.su (unsigned zone)
⏱️ Timing
Total: 1536ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 4 | 90.156.201.110, 90.156.201.111... |
| AAAA | 4 | 2a00:15f8:a000:5:1:13:0:9875, 2a00:15f8:a000:5:1:12:0:9875... |
| NS | 3 | ns.masterhost.ru, ns2.masterhost.ru... |
| MX | 1 | mx1.masterhost.ru (pri: 10) |
| SOA | 1 | ns1.masterhost.ru hostmaster.masterhost. |
📌 Glue Records Collected
Total: 10
Out-of-bailiwick: 10 (f.dns.ripn.net, e.dns.ripn.net, d.dns.ripn.net...)
Analysis
IP Addresses
1class.su points to 8 IP addresses, including 90.156.201.80, 90.156.201.93 and 90.156.201.110, plus 5 other.
restus.ru, senate.gob.su, moviestars.ru plus two other host names have IP numbers in common with 1class.su.
Name Servers
1class.su carries NS records delegating to ns1.masterhost.ru, ns2.masterhost.ru and ns.masterhost.ru.
1class.su partially shares its NS delegation with several other domains, including vodafilter.ru, sonictrade.ru, niikamin.ru and two others.
ns1.masterhost.ru, ns2.masterhost.ru and ns.masterhost.ru are three hostnames that each resolve to a pair of IP addresses: ns1.masterhost.ru to 90.156.137.50 and 2a00:15f8:a000:11:1:1:1:53, ns2.masterhost.ru to 90.156.133.161 and 2a00:15f8:a000:12:1:1:2:53, and ns.masterhost.ru to 90.156.136.116 and 2a00:15f8:a000:10:1:1:0:53.
Mail Servers
1class.su uses one mail server — mx1.masterhost.ru.
The mail server setup of 1class.su matches that of other domains such as a-v-g.ru, maxi-samara.ru, vag.su and two others.
1class.su uses mail servers that are also used by other domains, including acsm.ru, oko-capitalgroup.com and aquapure.ru.
mx1.masterhost.ru carries a single IP number, which is 90.156.132.120.