jrt.cz - robtex.com
jrt.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=1775513836 | ||||||
Subdomains
mail.jrt.cz |
Same first word
Similar names
DNS History
14 records (8 active, 6 former)
○NSns.kraxnet.com2015-06-16 → 2017-01-13 · 4 obs
● 2017-01-13 13:14:06
○ 2021-03-29 18:41:48
○ 2026-04-06 23:05:38
○NSns.kraxnet.cz2015-06-16 → 2017-01-13 · 4 obs
● 2017-01-13 13:14:06
○ 2021-03-29 18:41:48
○ 2026-04-06 23:05:38
●NSns.wedos.com2021-03-29 → 2026-04-06 · 3 obs
● 2021-03-29 18:41:48
● 2026-04-06 23:05:38
●NSns.wedos.cz2021-03-29 → 2026-04-06 · 3 obs
● 2021-03-29 18:41:48
● 2026-04-06 23:05:38
●NSns.wedos.eu2021-03-29 → 2026-04-06 · 3 obs
● 2021-03-29 18:41:48
● 2026-04-06 23:05:38
●NSns.wedos.net2021-03-29 → 2026-04-06 · 3 obs
● 2021-03-29 18:41:48
● 2026-04-06 23:05:38
○MXmx.jrt.cz2015-06-16 → 2017-01-13 · 4 obs
● 2017-01-13 13:14:06
○ 2021-03-29 18:41:48
○ 2026-04-06 23:05:38
●MXwes1-mx-backup.wedos.net2021-03-29 → 2026-04-06 · 3 obs
● 2021-03-29 18:41:48
● 2026-04-06 23:05:38
●MXwes1-mx1.wedos.net2021-03-29 → 2026-04-06 · 3 obs
● 2021-03-29 18:41:48
● 2026-04-06 23:05:38
●MXwes1-mx2.wedos.net2021-03-29 → 2026-04-06 · 3 obs
● 2021-03-29 18:41:48
● 2026-04-06 23:05:38
○A178.217.244.352016-04-19 → 2017-01-13 · 5 obs
● 2016-04-19 18:35:46
● 2017-01-13 13:14:06
○ 2021-03-29 18:41:48
○ 2026-04-06 23:05:38
○A82.113.55.1012015-06-16 → 2016-01-21 · 4 obs
● 2016-01-21 21:02:04
○ 2016-04-19 18:35:46
○ 2026-04-06 23:05:38
○A82.113.55.912015-06-16 → 2016-01-21 · 4 obs
● 2016-01-21 21:02:04
○ 2016-04-19 18:35:46
○ 2026-04-06 23:05:38
●A89.221.213.992021-03-29 → 2026-04-06 · 3 obs
● 2021-03-29 18:41:48
● 2026-04-06 23:05:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| jrt.cz | ns.wedos.net, ns.wedos.cz, ns.wedos.eu, ns.wedos.com | 4 records |
✅ Authoritative Response
Server:99.83.142.9
NS records: ns.wedos.net, ns.wedos.cz, ns.wedos.eu, ns.wedos.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for jrt.cz (unsigned zone)
⏱️ Timing
Total: 1086ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 89.221.213.99 |
| NS | 4 | ns.wedos.cz, ns.wedos.eu... |
| MX | 3 | wes1-mx1.wedos.net (pri: 1), wes1-mx2.wedos.net (pri: 1)... |
| SOA | 1 | ns.wedos.net wedos.wedos.com |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns.wedos.cz, ns.wedos.cz, ns.wedos.cz...)
Analysis
Hierarchy
jrt.cz is the parent of mail.jrt.cz.
IP Addresses
jrt.cz resolves to one IP number: 89.221.213.99.
other host names including ekj.cz, psz.cz, eaz.cz, obt.cz and loj.cz share IP numbers with jrt.cz.
Name Servers
jrt.cz is delegated to four name servers: ns.wedos.com, ns.wedos.cz, ns.wedos.eu and ns.wedos.net.
jrt.cz at least partially shares name servers with other domains, for instance myprompter.com, maths.cz, matric.cz, krajcova.cz and sadrokartonywisner.com.
Host names with four IPs:
ns.wedos.cz points to: 2a0e:acc0:1::caff:caff:cafb, 2a0e:acc0:2::c:1:c1, 45.138.106.1 and 185.8.238.1.
ns.wedos.net points to: 2600:9000:a419:5a54:19f7:a614:36fd:2825, 2600:9000:a705:25bb:c632:5e5a:dd9c:1e46, 75.2.92.86 and 99.83.142.9.
Host names with two IPs:
ns.wedos.com points to: 2a0e:acc0:1::cafe:cafe:cafe and 45.138.106.0.
ns.wedos.eu points to: 2a0e:acc0:2::b:1:b1 and 185.8.238.0.
Mail Servers
jrt.cz is handled by three mail servers: wes1-mx-backup.wedos.net, wes1-mx1.wedos.net and wes1-mx2.wedos.net.
jrt.cz shares some mail servers with other domains, at least partially, for instance lesy.eu, pomichalek.com, dzupin.com, entoo.cz and atlashub.net.
Host names with one IP number: wes1-mx-backup.wedos.net points to 46.28.106.56; wes1-mx1.wedos.net points to 46.28.106.11; wes1-mx2.wedos.net points to 46.28.106.12.