sem.su - dns.ninja
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=650209868 | ||||||
Same first word
Similar names
DNS History
16 records (12 active, 4 former)
●NSns.masterhost.ru2026-02-20 → 2026-07-17 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-17 12:01:14
○NSns1.hc.ru2015-07-23 → 2017-09-21 · 4 obs
● 2017-09-21 19:26:50
○ 2026-02-20 09:56:46
○ 2026-07-17 12:01:14
●NSns1.masterhost.ru2026-02-20 → 2026-07-17 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-17 12:01:14
○NSns2.hc.ru2015-07-23 → 2017-09-21 · 4 obs
● 2017-09-21 19:26:50
○ 2026-02-20 09:56:46
○ 2026-07-17 12:01:14
●NSns2.masterhost.ru2026-02-20 → 2026-07-17 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-17 12:01:14
○MXmx.cm.hc.ru2015-07-23 → 2017-09-21 · 4 obs
● 2017-09-21 19:26:50
○ 2026-02-20 09:56:46
○ 2026-07-17 12:01:14
●MXmx1.masterhost.ru2026-02-20 → 2026-07-17 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-17 12:01:14
●A2a00:15f8:a000:5:1:11:8:4cf32026-02-20 → 2026-07-17 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-17 12:01:14
●A2a00:15f8:a000:5:1:12:8:4cf32026-02-20 → 2026-07-17 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-17 12:01:14
●A2a00:15f8:a000:5:1:13:8:4cf32026-02-20 → 2026-07-17 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-17 12:01:14
●A2a00:15f8:a000:5:1:14:8:4cf32026-02-20 → 2026-07-17 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-17 12:01:14
○A89.111.176.1212015-07-23 → 2017-09-21 · 4 obs
● 2017-09-21 19:26:50
○ 2026-02-20 09:56:46
○ 2026-07-17 12:01:14
●A90.156.201.132026-02-20 → 2026-07-17 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-17 12:01:14
●A90.156.201.382026-02-20 → 2026-07-17 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-17 12:01:14
●A90.156.201.412026-02-20 → 2026-07-17 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-17 12:01:14
●A90.156.201.792026-02-20 → 2026-07-17 · 3 obs
● 2026-02-20 09:56:46
● 2026-07-17 12:01:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| su | a.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net, e.dns.ripn.net... | 10 records |
| 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: 1495ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 4 | 90.156.201.79, 90.156.201.41... |
| AAAA | 4 | 2a00:15f8:a000:5:1:14:8:4cf3, 2a00:15f8:a000:5:1:11:8:4cf3... |
| NS | 3 | ns1.masterhost.ru, ns.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 (a.dns.ripn.net, a.dns.ripn.net, b.dns.ripn.net...)
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
Three name servers are authoritative for sem.su: ns1.masterhost.ru, ns2.masterhost.ru and ns.masterhost.ru.
There is at least partial name server overlap between sem.su and other domains — dtg-printer.ru, bus27.ru, exeed.ru and two more among them.
ns1.masterhost.ru resolves to 90.156.137.50 and 2a00:15f8:a000:11:1:1:1:53. ns2.masterhost.ru resolves to 90.156.133.161 and 2a00:15f8:a000:12:1:1:2:53. ns.masterhost.ru resolves to 90.156.136.116 and 2a00:15f8:a000:10:1:1:0:53. All three hostnames point to two IP numbers each.
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.
There is one IP number for mx1.masterhost.ru: 90.156.132.120.