jisk.cz - robtex.com

jisk.cz

DNSSEC⚠️ Not signed
A81.2.195.68🇨🇿 INTERNET-CZ81.2.192.0/18 INTERNET CZ, a.s.
PTR68.195.forpsi.net
NSns.forpsi.net ⭐
A2001:15e8:101:1::c282🇨🇿 INTERNET-CZ2001:15e8::/32
PTRns.forpsi.net
A81.2.194.130🇨🇿 INTERNET-CZ81.2.192.0/18 INTERNET CZ, a.s.
PTRns.forpsi.net
NSns.forpsi.cz
A2001:15e8:201:1::d1b9🇨🇿 INTERNET-CZ2001:15e8::/32
PTRns.forpsi.cz
A81.2.209.185🇨🇿 INTERNET-CZ81.2.209.0/24
PTRns.forpsi.cz
NSns.forpsi.it
A2a00:6d41:2:1::5🇮🇹 ARUBA-ASN2a00:6d41::/32 Aruba S.p.A. IPv6 Network
PTRns.forpsi.it
A95.110.254.165🇮🇹 ARUBA-ASN95.110.192.0/18 Aruba S.p.A. Network
PTRhost165-254-110-95.serverdedicati.aruba.it
MXmxavas.forpsi.com ⭐
A81.2.195.200🇨🇿 INTERNET-CZ81.2.192.0/18 INTERNET CZ, a.s.
PTRmxavas.forpsi.com
SOAns.forpsi.netadmin@forpsi.com 2026-08-03 #1

cz

DNSSEC🔒 Signed (DS record present)
NSa.ns.nic.cz ⭐
NSb.ns.nic.cz
NSc.ns.nic.cz
NSd.ns.nic.cz
SOAa.ns.nic.czhostmaster@nic.cz serial=1786547841

Same first word

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DNS History

9 records (5 active, 4 former)

20162017201820192020202120222023202420252026NSns.forpsi.czns.forpsi.itns.forpsi.netns.eltop.czns2.eltop.czMXmxavas.forpsi.commail.jisk.czA81.2.195.6882.208.10.144
○NSns.eltop.cz2015-06-04 → 2017-03-16 · 4 obs
● 2015-06-04 00:09:52
● 2017-03-16 13:23:38
○ 2026-06-13 08:05:22
○ 2026-08-12 16:20:50
●NSns.forpsi.cz2026-06-13 → 2026-08-12 · 3 obs
○ 2017-03-16 13:23:38
● 2026-06-13 08:05:22
● 2026-08-12 16:20:50
●NSns.forpsi.it2026-06-13 → 2026-08-12 · 3 obs
○ 2017-03-16 13:23:38
● 2026-06-13 08:05:22
● 2026-08-12 16:20:50
●NSns.forpsi.net2026-06-13 → 2026-08-12 · 3 obs
○ 2017-03-16 13:23:38
● 2026-06-13 08:05:22
● 2026-08-12 16:20:50
○NSns2.eltop.cz2015-06-04 → 2017-03-16 · 4 obs
● 2015-06-04 00:09:52
● 2017-03-16 13:23:38
○ 2026-06-13 08:05:22
○ 2026-08-12 16:20:50
○MXmail.jisk.cz2015-06-04 → 2017-03-16 · 4 obs
● 2015-06-04 00:09:52
● 2017-03-16 13:23:38
○ 2026-06-13 08:05:22
○ 2026-08-12 16:20:50
●MXmxavas.forpsi.com2026-06-13 → 2026-08-12 · 3 obs
○ 2017-03-16 13:23:38
● 2026-06-13 08:05:22
● 2026-08-12 16:20:50
●A81.2.195.682026-06-13 → 2026-08-12 · 3 obs
○ 2017-03-16 13:23:38
● 2026-06-13 08:05:22
● 2026-08-12 16:20:50
○A82.208.10.1442015-06-04 → 2017-03-16 · 4 obs
● 2015-06-04 00:09:52
● 2017-03-16 13:23:38
○ 2026-06-13 08:05:22
○ 2026-08-12 16:20:50

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cza.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz8 records
jisk.czns.forpsi.cz, ns.forpsi.it, ns.forpsi.net2 records

✅ Authoritative Response

Server:81.2.194.130

NS records: ns.forpsi.cz, ns.forpsi.it, ns.forpsi.net

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 2772ms | Queries: -

📄 Records

TypeCountSample Data
A181.2.195.68
NS3ns.forpsi.cz, ns.forpsi.it...
MX1mxavas.forpsi.com (pri: 10)
SOA1ns.forpsi.net admin.forpsi.com

📌 Glue Records Collected

Total: 10

In-bailiwick: 8 (a.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz...)

Out-of-bailiwick: 2 (ns.forpsi.cz, ns.forpsi.cz)

Analysis

IP Addresses

jisk.cz has exactly one IP address — 81.2.195.68.

nordkapp.cz, noproxy_5e8ef4b90895f.servis-iphone.eu, project-genius.eu plus two other host names have IP numbers in common with jisk.cz.

Name Servers

DNS for jisk.cz is handled by three authoritative name servers: ns.forpsi.cz, ns.forpsi.it and ns.forpsi.net.

jisk.cz shares at least some of its name servers with other domains, including beauty4you.pl, akckm.cz, slivex.cz and two others.

These name servers are frequently seen alongside the name servers ns.forpsi.us.

Three hostnames — ns.forpsi.cz, ns.forpsi.it and ns.forpsi.net — each have two IP addresses: ns.forpsi.cz has 81.2.209.185 and 2001:15e8:201:1::d1b9, ns.forpsi.it has 95.110.254.165 and 2a00:6d41:2:1::5, and ns.forpsi.net has 81.2.194.130 and 2001:15e8:101:1::c282.

Mail Servers

jisk.cz uses one mail server — mxavas.forpsi.com.

The mail server setup of jisk.cz matches that of other domains such as dib.cz, redita.cz, asoptic.cz and two others.

jisk.cz shares at least some of its mail servers with other domains, such as htgroup.cz and 5starwash.eu.

mxavas.forpsi.com has exactly one IP number: 81.2.195.200.