crystalcz.com - robtex.com
crystalcz.com
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1786629429 | ||||||
Subdomains
www.crystalcz.com |
Same first word
crystalcz.com |
DNS History
10 records (8 active, 2 former)
●NSns1.regzone.cz2015-06-18 → 2026-08-13 · 2 obs
● 2026-08-13 14:05:52
●NSns1.regzone.de2015-06-18 → 2026-08-13 · 2 obs
● 2026-08-13 14:05:52
●NSns1.regzone.info2015-06-18 → 2026-08-13 · 2 obs
● 2026-08-13 14:05:52
●A217.198.114.162015-11-01 → 2026-08-13 · 3 obs
● 2015-11-01 01:38:02
● 2026-08-13 14:05:52
○A217.198.114.352015-06-18 → 2015-06-18 · 3 obs
○ 2015-11-01 01:38:02
○ 2026-08-13 14:05:52
●A2a00:19a0:3:72:0:d9c6:7210:12015-11-01 → 2026-08-13 · 3 obs
● 2015-11-01 01:38:02
● 2026-08-13 14:05:52
○A2a00:19a0:3:72:0:d9c6:7223:12015-06-18 → 2015-06-18 · 3 obs
○ 2015-11-01 01:38:02
○ 2026-08-13 14:05:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | h.gtld-servers.net, j.gtld-servers.net, i.gtld-servers.net, d.gtld-servers.net... | - |
| crystalcz.com | ns1.regzone.info, ns1.regzone.cz, ns1.regzone.de | - |
✅ Authoritative Response
Server:23.92.29.43
NS records: ns1.regzone.info, ns1.regzone.cz, ns1.regzone.de
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 851ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 217.198.114.16 |
| AAAA | 1 | 2a00:19a0:3:72:0:d9c6:7210:1 |
| NS | 3 | ns1.regzone.cz, ns1.regzone.de... |
| MX | 3 | relay.zoner.com (pri: 1), 10mx.zoner.com (pri: 10)... |
| SOA | 1 | ns1.regzone.cz administrator.czechia.cz |
Analysis
Hierarchy
crystalcz.com is a parent domain of www.crystalcz.com.
IP Addresses
crystalcz.com directs to two IP numbers, 217.198.114.16 and 2a00:19a0:3:72:0:d9c6:7210:1
Two other host names, along with www.crystalcz.com, eruca.cz and mepco.cz, also share IP numbers with crystalcz.com.
Name Servers
crystalcz.com has three name servers — ns1.regzone.cz, ns1.regzone.de and ns1.regzone.info.
crystalcz.com shares at least some of its name servers with other domains, including cibis.eu, stroje-atol.cz, sulc.eu and two others.
Each of ns1.regzone.cz, ns1.regzone.de and ns1.regzone.info points to two IP numbers. ns1.regzone.cz points to 217.198.113.10 and 2a00:19a0:3:71:0:d9c6:710a:1. ns1.regzone.de points to 23.92.29.43 and 2600:3c02::f03c:91ff:fedb:a6e7. ns1.regzone.info points to 81.0.233.10 and 2001:1528:147::10.
Mail Servers
crystalcz.com is handled by three mail servers: 10mx.zoner.com, 15mx.zoner.com and relay.zoner.com.
There is at least a partial MX overlap between crystalcz.com and other domains, including dcneznalek.cz, ideamerit.com, nor.cz and two others.
These mail servers often co-occur with the mail servers mail.stormware.cz.
Each of the three hostnames points to exactly one IP address: 10mx.zoner.com points to 217.198.120.36, 15mx.zoner.com points to 81.0.233.6 and relay.zoner.com points to 217.198.120.100.