rwsystem.cz - robtex.com
rwsystem.cz
cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.ns.nic.cz ⭐ 🔒 | ||||||
| NS | b.ns.nic.cz 🔒 | ||||||
| NS | c.ns.nic.cz 🔒 | ||||||
| NS | d.ns.nic.cz 🔒 | ||||||
| SOA | a.ns.nic.czhostmaster@nic.cz serial=1771291036 | ||||||
Subdomains
Same first word
Similar names
DNS History
11 records (7 active, 4 former)
○NSns.grdns.cz2015-07-19 → 2017-08-31 · 3 obs
● 2017-08-31 13:31:54
○ 2026-03-24 05:10:48
○NSns.grdns.it2015-07-19 → 2017-08-31 · 3 obs
● 2017-08-31 13:31:54
○ 2026-03-24 05:10:48
●NSns1.websupport.sk2026-03-24 → 2026-03-24 · 2 obs
● 2026-03-24 05:10:48
●NSns2.websupport.sk2026-03-24 → 2026-03-24 · 2 obs
● 2026-03-24 05:10:48
●NSns3.websupport.sk2026-03-24 → 2026-03-24 · 2 obs
● 2026-03-24 05:10:48
●MXmailin1.rwsystem.cz2026-03-24 → 2026-03-24 · 1 obs
●MXmailin2.rwsystem.cz2026-03-24 → 2026-03-24 · 1 obs
○A212.96.164.2372015-07-19 → 2016-07-26 · 4 obs
● 2016-07-26 02:52:50
○ 2017-08-31 13:31:54
○ 2026-03-24 05:10:48
●A2a00:4b40:aaaa:2006::52026-03-24 → 2026-03-24 · 2 obs
● 2026-03-24 05:10:48
●A37.9.175.1652026-03-24 → 2026-03-24 · 2 obs
● 2026-03-24 05:10:48
○A37.9.175.222017-08-31 → 2017-08-31 · 3 obs
● 2017-08-31 13:31:54
○ 2026-03-24 05:10:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| rwsystem.cz | ns1.websupport.sk, ns2.websupport.sk, ns3.websupport.sk | - |
✅ Authoritative Response
Server:45.10.97.13
NS records: ns1.websupport.sk, ns2.websupport.sk, ns3.websupport.sk
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1081ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 37.9.175.165 |
| AAAA | 1 | 2a00:4b40:aaaa:2006::5 |
| NS | 3 | ns1.websupport.sk, ns2.websupport.sk... |
| MX | 2 | mailin1.rwsystem.cz (pri: 10), mailin2.rwsystem.cz (pri: 100) |
| TXT | 2 | v=spf1 a mx include:_spf.m1.websupport.s, spf2.0/pra a mx include:_sid.m1.websuppo |
| SOA | 1 | ns1.websupport.sk admin.websupport.sk |
Analysis
Hierarchy
rwsystem.cz is a parent of mailin1.rwsystem.cz and mailin2.rwsystem.cz.
IP Addresses
The entity rwsystem.cz points to two IP numbers: 2a00:4b40:aaaa:2006::5 and 37.9.175.165.
For instance, other host names www.kovosvoboda.cz, filuma.cz, kulgan.alltoys.cz, vestinu.eu and stredniskolastraznice.cz share IP numbers with rwsystem.cz.
Name Servers
The delegation for rwsystem.cz is handled by three name servers: ns1.websupport.sk, ns2.websupport.sk and ns3.websupport.sk.
rwsystem.cz shares name servers with other domains at least partially, for example prekop.eu, lameloveclony.sk, gremiklima.sk, bottleshop.sk and turboduchadlo.sk.
Host names with two IPs:
ns1.websupport.sk points to 2a10:bbc0::11 and 45.10.97.11
ns2.websupport.sk points to 2a02:250:3::12 and 185.71.159.12
ns3.websupport.sk points to 2a10:bbc0::13 and 45.10.97.13
Mail Servers
Two mail servers mailin1.rwsystem.cz and mailin2.rwsystem.cz handle rwsystem.cz.
Host names with two IP numbers:
mailin1.rwsystem.cz points to 2a00:4b40:aaaa:2101:45:13:137:9 and 45.13.137.8; mailin2.rwsystem.cz points to 2a00:4b40:aaaa:2101:45:13:137:7 and 45.13.137.9.