sem.su - robtex.com
sem.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=650209915 | ||||||
Same first word
Similar names
DNS History
16 records (12 active, 4 former)
●NSns.masterhost.ru2026-02-20 → 2026-07-21 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-21 09:23:54
○NSns1.hc.ru2015-07-23 → 2017-09-21 · 4 obs
● 2017-09-21 19:26:50
○ 2026-02-20 09:56:46
○ 2026-07-21 09:23:54
●NSns1.masterhost.ru2026-02-20 → 2026-07-21 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-21 09:23:54
○NSns2.hc.ru2015-07-23 → 2017-09-21 · 4 obs
● 2017-09-21 19:26:50
○ 2026-02-20 09:56:46
○ 2026-07-21 09:23:54
●NSns2.masterhost.ru2026-02-20 → 2026-07-21 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-21 09:23:54
○MXmx.cm.hc.ru2015-07-23 → 2017-09-21 · 4 obs
● 2017-09-21 19:26:50
○ 2026-02-20 09:56:46
○ 2026-07-21 09:23:54
●MXmx1.masterhost.ru2026-02-20 → 2026-07-21 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-21 09:23:54
●A2a00:15f8:a000:5:1:11:8:4cf32026-02-20 → 2026-07-21 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-21 09:23:54
●A2a00:15f8:a000:5:1:12:8:4cf32026-02-20 → 2026-07-21 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-21 09:23:54
●A2a00:15f8:a000:5:1:13:8:4cf32026-02-20 → 2026-07-21 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-21 09:23:54
●A2a00:15f8:a000:5:1:14:8:4cf32026-02-20 → 2026-07-21 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-21 09:23:54
○A89.111.176.1212015-07-23 → 2017-09-21 · 4 obs
● 2017-09-21 19:26:50
○ 2026-02-20 09:56:46
○ 2026-07-21 09:23:54
●A90.156.201.132026-02-20 → 2026-07-21 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-21 09:23:54
●A90.156.201.382026-02-20 → 2026-07-21 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-21 09:23:54
●A90.156.201.412026-02-20 → 2026-07-21 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-21 09:23:54
●A90.156.201.792026-02-20 → 2026-07-21 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-21 09:23:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| su | e.dns.ripn.net, a.dns.ripn.net, f.dns.ripn.net, b.dns.ripn.net... | - |
| sem.su | ns.masterhost.ru, ns1.masterhost.ru, ns2.masterhost.ru | - |
✅ Authoritative Response
Server:90.156.133.161
NS records: ns.masterhost.ru, ns1.masterhost.ru, ns2.masterhost.ru
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sem.su (unsigned zone)
⏱️ Timing
Total: 1277ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 4 | 90.156.201.79, 90.156.201.13... |
| AAAA | 4 | 2a00:15f8:a000:5:1:11:8:4cf3, 2a00:15f8:a000:5:1:14:8:4cf3... |
| NS | 3 | ns2.masterhost.ru, ns1.masterhost.ru... |
| MX | 1 | mx1.masterhost.ru (pri: 10) |
| SOA | 1 | ns1.masterhost.ru hostmaster.masterhost. |
Analysis
IP Addresses
sem.su has 8 IP addresses — 90.156.201.13, 90.156.201.38, 90.156.201.41 and 5 more.
shop.infotropic.ru, open-unn.ru, russiansteamtour.com and two other host names share IP numbers with sem.su.
Name Servers
sem.su is served by three name servers: ns1.masterhost.ru, ns2.masterhost.ru and ns.masterhost.ru.
sem.su partially shares its NS delegation with several other domains, including dtg-printer.ru, bus27.ru, exeed.ru and two others.
The hostnames ns1.masterhost.ru, ns2.masterhost.ru and ns.masterhost.ru each direct to two 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
Mail for sem.su is handled by a single mail server, mx1.masterhost.ru.
sem.su uses an identical mail server configuration to several other domains — among them xn----7sbfedebebzdrkbi5bmwkezhiw8r1a.xn--p1ai, board.ru, descol.ru and two more.
mx1.masterhost.ru resolves to 90.156.132.120 and no other IP number.