dev.cz - robtex.com
dev.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=1783153040 | ||||||
Same first word
Similar names
DNS History
7 records (6 active, 1 former)
●NSalfa.ns.active24.cz2008-10-13 → 2026-07-04 · 2 obs
● 2026-07-04 08:36:02
●NSbeta.ns.active24.cz2008-10-13 → 2026-07-04 · 2 obs
● 2026-07-04 08:36:02
●NSgama.ns.active24.sk2015-08-07 → 2026-07-04 · 3 obs
● 2015-08-07 18:57:04
● 2026-07-04 08:36:02
●MXgw.mediafactory.cz2008-10-13 → 2026-07-04 · 2 obs
● 2026-07-04 08:36:02
○MXmx.smtp.cz2008-10-13 → 2017-05-25 · 4 obs
● 2017-05-25 15:26:04
○ 2020-12-04 02:07:36
○ 2026-07-04 08:36:02
●MXmx2.active24.com2020-12-04 → 2026-07-04 · 3 obs
● 2020-12-04 02:07:36
● 2026-07-04 08:36:02
●A88.208.100.2082008-10-13 → 2026-07-04 · 2 obs
● 2026-07-04 08:36:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | d.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz | - |
| dev.cz | gama.ns.active24.sk, beta.ns.active24.cz, alfa.ns.active24.cz | 4 records |
✅ Authoritative Response
Server:185.71.158.30
NS records: gama.ns.active24.sk, beta.ns.active24.cz, alfa.ns.active24.cz
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 2274ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 88.208.100.208 |
| NS | 3 | alfa.ns.active24.cz, beta.ns.active24.cz... |
| MX | 2 | gw.mediafactory.cz (pri: 10), mx2.active24.com (pri: 20) |
| TXT | 1 | v=spf1 ip4:88.208.100.208 ip4:88.208.100 |
| SOA | 1 | alfa.ns.active24.cz hostmaster.active24. |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (beta.ns.active24.cz, alfa.ns.active24.cz, beta.ns.active24.cz...)
Analysis
IP Addresses
dev.cz directs to one IP number, which is 88.208.100.208.
Name Servers
dev.cz has three name servers — alfa.ns.active24.cz, beta.ns.active24.cz and gama.ns.active24.sk.
dev.cz shares at least some of its name servers with other domains, including cmart.cz, sysware.cz, kon-takt.cz and two others.
These name servers are frequently paired with the name servers ns.servery.cz and ns.dns4.cz.
Each of alfa.ns.active24.cz, beta.ns.active24.cz and gama.ns.active24.sk points to two IP numbers. alfa.ns.active24.cz points to 81.95.96.2 and 2a02:4a8:ac24:100::96:2. beta.ns.active24.cz points to 185.111.90.94 and 2a00:4b40:1000:590:185:111:90:94. gama.ns.active24.sk points to 185.71.158.30 and 2a00:1968:0:1002:185:71:158:30.
Mail Servers
The MX records for dev.cz point to two mail servers: mx2.active24.com and gw.mediafactory.cz.
dev.cz shares its mail server configuration with other domains, such as media-factory.cz and mediafactory.eu.
dev.cz shares at least some of its mail servers with other domains — for example oblaca.cz, rivella.cz, interdoor.org and two more.
It is common to find these mail servers paired with the mail servers mx1.active24.com.
Hosts with two IP numbers each:
mx2.active24.com resolves to 185.111.90.93 and 2a00:4b40:1000:590:185:111:90:93.
Hosts that resolve to one IP address:
gw.mediafactory.cz resolves to 213.151.83.254.