csdata.cz - dns.ninja
csdata.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=1786754840 | ||||||
Subdomains
Same first word
Similar names
DNS History
18 records (7 active, 11 former)
●NSns.gransy.com2026-02-23 → 2026-08-15 · 3 obs
● 2026-02-23 23:16:46
● 2026-08-15 01:18:50
○NSns1.ignum.com2015-08-09 → 2015-11-30 · 4 obs
● 2015-11-30 10:15:22
○ 2016-03-18 10:39:52
○ 2026-08-15 01:18:50
○NSns1.sonexo.eu2016-03-18 → 2016-07-22 · 5 obs
● 2016-03-18 10:39:52
● 2016-07-22 03:11:48
○ 2018-01-03 14:11:40
○ 2026-08-15 01:18:50
●NSns2.gransy.com2026-02-23 → 2026-08-15 · 3 obs
● 2026-02-23 23:16:46
● 2026-08-15 01:18:50
○NSns2.ignum.cz2015-08-09 → 2015-11-30 · 4 obs
● 2015-11-30 10:15:22
○ 2016-03-18 10:39:52
○ 2026-08-15 01:18:50
○NSns2.sonexo.com2016-03-18 → 2016-07-22 · 5 obs
● 2016-03-18 10:39:52
● 2016-07-22 03:11:48
○ 2018-01-03 14:11:40
○ 2026-08-15 01:18:50
●NSns3.gransy.com2026-02-23 → 2026-08-15 · 3 obs
● 2026-02-23 23:16:46
● 2026-08-15 01:18:50
●NSns4.gransy.com2026-02-23 → 2026-08-15 · 3 obs
● 2026-02-23 23:16:46
● 2026-08-15 01:18:50
●NSns5.gransy.com2026-02-23 → 2026-08-15 · 3 obs
● 2026-02-23 23:16:46
● 2026-08-15 01:18:50
○MXcsdata-cz.mail.protection.outlook.com2015-08-09 → 2015-11-30 · 4 obs
● 2015-11-30 10:15:22
○ 2016-03-18 10:39:52
○ 2026-08-15 01:18:50
○MXmail2.csdata.cz2015-08-09 → 2015-11-30 · 4 obs
● 2015-11-30 10:15:22
○ 2016-03-18 10:39:52
○ 2026-08-15 01:18:50
○MXmail3.csdata.cz2015-08-09 → 2015-11-30 · 4 obs
● 2015-11-30 10:15:22
○ 2016-03-18 10:39:52
○ 2026-08-15 01:18:50
○MXmail4.csdata.cz2015-08-09 → 2015-11-30 · 4 obs
● 2015-11-30 10:15:22
○ 2016-03-18 10:39:52
○ 2026-08-15 01:18:50
●MXmx.yandex.net2026-02-23 → 2026-08-15 · 3 obs
● 2026-02-23 23:16:46
● 2026-08-15 01:18:50
○MXmx2.ha-vel.cz2015-08-09 → 2015-11-30 · 4 obs
● 2015-11-30 10:15:22
○ 2016-03-18 10:39:52
○ 2026-08-15 01:18:50
○A199.59.243.1202016-03-18 → 2016-07-22 · 5 obs
● 2016-03-18 10:39:52
● 2016-07-22 03:11:48
○ 2018-01-03 14:11:40
○ 2026-08-15 01:18:50
○A62.109.132.882015-08-09 → 2015-11-30 · 4 obs
● 2015-11-30 10:15:22
○ 2016-03-18 10:39:52
○ 2026-08-15 01:18:50
●A87.236.195.1402026-02-23 → 2026-08-15 · 3 obs
● 2026-02-23 23:16:46
● 2026-08-15 01:18:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, d.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz | - |
| csdata.cz | ns.gransy.com, ns2.gransy.com, ns3.gransy.com, ns4.gransy.com... | - |
✅ Authoritative Response
Server:95.179.136.180
NS records: ns.gransy.com, ns2.gransy.com, ns3.gransy.com, ns4.gransy.com, ns5.gransy.com
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 2345ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 87.236.195.140 |
| NS | 5 | ns5.gransy.com, ns2.gransy.com... |
| MX | 1 | mx.yandex.net (pri: 10) |
| TXT | 2 | yandex-verification: 18795e33908307a0, v=spf1 redirect=_spf.yandex.net |
| SOA | 1 | ns.gransy.com root.gransy.com |
Analysis
Hierarchy
praha.csdata.cz, firewall.csdata.cz, mail.csdata.cz, mail3.csdata.cz and *.csdata.cz are all subdomains of csdata.cz.
IP Addresses
csdata.cz directs to one IP number, which is 87.236.195.140.
Among the host names that share IP numbers with csdata.cz are ruu.cz, esxi.cz, eurogid.cz and two others.
Name Servers
The authoritative name servers for csdata.cz are ns2.gransy.com, ns3.gransy.com, ns4.gransy.com and two others.
The name servers of csdata.cz overlap at least partially with those of other domains — among them gluchman.cz, hajn.cz, aloeverajuice.at and two more.
These name servers are routinely co-deployed with the name servers ns5.gransy.com, ns.gransy.com, ns2.internetserver.cz and two others.
Hostnames that point to five IP numbers:
ns2.gransy.com directs to 95.179.192.121, 217.16.185.221, 217.69.4.49 and two other IP addresses.
ns3.gransy.com directs to 46.21.100.103, 77.78.126.35, 109.74.7.71 and two other IP addresses.
Hosts pointing to four IP addresses:
ns4.gransy.com resolves to 66.42.94.136, 80.67.7.209, 2001:19f0:5401:69b:5400:1ff:fec5:8f3f and 2a00:1a28:2010:1::89.
ns.gransy.com resolves to 45.76.90.43, 77.78.104.149, 95.179.136.180 and 2001:19f0:5001:1caf:5400:1ff:fec5:8d50.
Hosts with two IP numbers each:
ns5.gransy.com directs traffic to 31.192.227.223 and 2a02:750:5::538.
Mail Servers
csdata.cz routes its mail through a single mail server, mx.yandex.net.
csdata.cz has the same mail server arrangement as a number of other domains, for example okmebel24.ru, www.shablin.ru, azdrivers.ru and two more.
csdata.cz shares at least some of its mail servers with other domains — for example meamou.ru, edufuture.biz, mersibo.ru and two more.
mx.yandex.net resolves to two IP numbers — 77.88.21.249 and 2a02:6b8::311.