oucernava.cz - robtex.com

oucernava.cz

DNSSEC🔒 Signed (DS record present)
A2a01:28:ca:110:88:86:103:135🇨🇿 SuperNetwork2a01:28::/32 s.r.o.
PTRapus.gc-system.cz
A88.86.103.135🇨🇿 SuperNetwork88.86.96.0/19 s.r.o.
NSns.grdns.cz ⭐
A2001:15e8:101:1::c268🇨🇿 INTERNET-CZ2001:15e8::/32
PTRns.grdns.cz
A81.2.194.104🇨🇿 INTERNET-CZ81.2.192.0/18 INTERNET CZ, a.s.
PTRns.grdns.cz
NSns.grdns.it
A2a00:6d41:2:1::7🇮🇹 ARUBA-ASN2a00:6d41::/32 Aruba S.p.A. IPv6 Network
PTRns.grdns.it
A95.110.254.167🇮🇹 ARUBA-ASN95.110.192.0/18 Aruba S.p.A. Network
PTRns.grdns.it
MXposta.gc-system.cz ⭐
A2a01:28:ca:110:88:86:102:8🇨🇿 SuperNetwork2a01:28::/32 s.r.o.
PTRpleiades1.gc-system.cz
A88.86.102.8🇨🇿 SuperNetwork88.86.96.0/19 s.r.o.
PTRpleiades1.gc-system.cz
TXTv=spf1 a mx include:spfa.gc-system.cz ~all
SOAns.grdns.czadmin@forpsi.com 2026-05-04 #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=1778336236

DNS History

10 records (5 active, 5 former)

20162017201820192020202120222023202420252026NSns.grdns.czns.grdns.itns.com4servis.czns.intraline.czns.oucernava.czMXposta.gc-system.czns.oucernava.czA2a01:28:ca:110:88:86:103:13588.86.103.1355.1.56.21
○NSns.com4servis.cz2015-08-20 → 2017-05-14 · 3 obs
● 2015-08-20 10:44:46
● 2017-05-14 09:14:14
○ 2026-05-09 14:39:32
●NSns.grdns.cz2026-05-09 → 2026-05-09 · 2 obs
○ 2017-05-14 09:14:14
● 2026-05-09 14:39:32
●NSns.grdns.it2026-05-09 → 2026-05-09 · 2 obs
○ 2017-05-14 09:14:14
● 2026-05-09 14:39:32
○NSns.intraline.cz2015-08-20 → 2017-05-14 · 3 obs
● 2015-08-20 10:44:46
● 2017-05-14 09:14:14
○ 2026-05-09 14:39:32
○NSns.oucernava.cz2015-08-20 → 2017-05-14 · 3 obs
● 2015-08-20 10:44:46
● 2017-05-14 09:14:14
○ 2026-05-09 14:39:32
○MXns.oucernava.cz2015-08-20 → 2017-05-14 · 3 obs
● 2015-08-20 10:44:46
● 2017-05-14 09:14:14
○ 2026-05-09 14:39:32
●MXposta.gc-system.cz2026-05-09 → 2026-05-09 · 2 obs
○ 2017-05-14 09:14:14
● 2026-05-09 14:39:32
●A2a01:28:ca:110:88:86:103:1352026-05-09 → 2026-05-09 · 2 obs
○ 2017-05-14 09:14:14
● 2026-05-09 14:39:32
○A5.1.56.212015-08-20 → 2017-05-14 · 3 obs
● 2015-08-20 10:44:46
● 2017-05-14 09:14:14
○ 2026-05-09 14:39:32
●A88.86.103.1352026-05-09 → 2026-05-09 · 2 obs
○ 2017-05-14 09:14:14
● 2026-05-09 14:39:32

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cza.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz-
oucernava.czns.grdns.cz, ns.grdns.it2 records

✅ Authoritative Response

Server:95.110.254.167

NS records: ns.grdns.cz, ns.grdns.it

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1594ms | Queries: -

📄 Records

TypeCountSample Data
A188.86.103.135
AAAA12a01:28:ca:110:88:86:103:135
NS2ns.grdns.cz, ns.grdns.it
MX1posta.gc-system.cz (pri: 10)
TXT1v=spf1 a mx include:spfa.gc-system.cz ~a
SOA1ns.grdns.cz admin.forpsi.com

📌 Glue Records Collected

Total: 2

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

Analysis

IP Addresses

The entity oucernava.cz points to two IP numbers: 2a01:28:ca:110:88:86:103:135 and 88.86.103.135.

For instance, other host names zsborovany.cz, zsvelka.cz, spec-zs.cz, zpbx.zsfajtla.cz and ceprovice.cz share IP numbers with oucernava.cz.

Name Servers

oucernava.cz is delegated to two name servers: ns.grdns.cz and ns.grdns.it.

oucernava.cz uses the same name server setup as other domains such as chic.cz, cervelo.cz, slechta.cz, nezavislyporadce.cz and revel-pex.com.

Host names with two IP numbers:

ns.grdns.cz points to 2001:15e8:101:1::c268 and 81.2.194.104; ns.grdns.it points to 2a00:6d41:2:1::7 and 95.110.254.167.

Mail Servers

oucernava.cz is handled by a single mail server, posta.gc-system.cz.

oucernava.cz shares the same mail server setup as other domains, for instance halic.sk, slatinanadupou.cz, krasovice.cz, revnicov.cz and bousov.cz.

posta.gc-system.cz resolves to two IPs: 2a01:28:ca:110:88:86:102:8 and 88.86.102.8.