dnssec-validator.cz - robtex.com

dnssec-validator.cz

DNSSEC🔒 Signed (DS record present)
A2001:1488:800:400::2:96🇨🇿 CZNIC-AS2001:1488::/32 CZ.NIC, z.s.p.o.
PTRgitlab.nic.cz
A217.31.204.96🇨🇿 CZNIC-AS217.31.192.0/20 CZNIC - NET
NSsld1.ns.nic.cz ⭐
A2001:1488:800:126::98🇨🇿 CZNIC-AS2001:1488::/32 CZ.NIC, z.s.p.o.
PTRsld1.ns.nic.cz
A217.31.207.98🇨🇿 CZNIC-AS217.31.192.0/20 CZNIC - NET
PTRsld1.ns.nic.cz
NSsld2.ns.nic.cz
A2001:1488:800:126::99🇨🇿 CZNIC-AS2001:1488::/32 CZ.NIC, z.s.p.o.
PTRsld2.ns.nic.cz
A217.31.207.99🇨🇿 CZNIC-AS217.31.192.0/20 CZNIC - NET
PTRsld2.ns.nic.cz
NSsld3.ns.nic.cz
A2001:1ab0:7e1e:d150::8:1🇨🇿 IGNUM-AS2001:1ab0::/32 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/
PTRsld3.ns.nic.cz
A217.31.57.6🇨🇿 IGNUM-AS217.31.48.0/20 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/
PTRsld3.ns.nic.cz
MXmail.nic.cz ⭐
A2001:1488:800:400::400🇨🇿 CZNIC-AS2001:1488::/32 CZ.NIC, z.s.p.o.
PTRmail.nic.cz
A217.31.204.67🇨🇿 CZNIC-AS217.31.192.0/20 CZNIC - NET
PTRmail.nic.cz
MXmx.nic.cz(15)
A2001:1ab0:7e1e:d150::8:157🇨🇿 IGNUM-AS2001:1ab0::/32 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/
PTRmx.nic.cz
A217.31.57.157🇨🇿 IGNUM-AS217.31.48.0/20 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/
PTRmx.nic.cz
SOAsld1.ns.nic.czhostmaster@nic.cz serial=1777192877

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=1777304835
WOT: UNKNOWN (79/100)

Subdomains

www.dnssec-validator.cz

Same first word

dnssec-validator.cz

DNS History

15 records (7 active, 8 former)

20162017201820192020202120222023202420252026NSsld1.ns.nic.czsld2.ns.nic.czsld3.ns.nic.cza.ns.nic.czb.ns.nic.czd.ns.nic.czMXmail.nic.czmx.nic.czbh.nic.czA2001:1488:800:400::2:96217.31.204.962001:1488:0:3::72001:1488:ac15:ff90::130217.31.192.130217.31.205.55
○NSa.ns.nic.cz2015-08-06 → 2018-11-30 · 4 obs
● 2015-08-06 02:44:34
● 2018-11-30 09:53:08
○ 2026-02-22 14:07:22
○ 2026-04-27 16:21:52
○NSb.ns.nic.cz2015-08-06 → 2018-11-30 · 4 obs
● 2015-08-06 02:44:34
● 2018-11-30 09:53:08
○ 2026-02-22 14:07:22
○ 2026-04-27 16:21:52
○NSd.ns.nic.cz2015-08-06 → 2018-11-30 · 4 obs
● 2015-08-06 02:44:34
● 2018-11-30 09:53:08
○ 2026-02-22 14:07:22
○ 2026-04-27 16:21:52
●NSsld1.ns.nic.cz2026-02-22 → 2026-04-27 · 3 obs
○ 2018-11-30 09:53:08
● 2026-02-22 14:07:22
● 2026-04-27 16:21:52
●NSsld2.ns.nic.cz2026-02-22 → 2026-04-27 · 3 obs
○ 2018-11-30 09:53:08
● 2026-02-22 14:07:22
● 2026-04-27 16:21:52
●NSsld3.ns.nic.cz2026-02-22 → 2026-04-27 · 3 obs
○ 2018-11-30 09:53:08
● 2026-02-22 14:07:22
● 2026-04-27 16:21:52
○MXbh.nic.cz2015-08-06 → 2018-11-30 · 4 obs
● 2015-08-06 02:44:34
● 2018-11-30 09:53:08
○ 2026-02-22 14:07:22
○ 2026-04-27 16:21:52
●MXmail.nic.cz2015-08-06 → 2026-04-27 · 2 obs
● 2015-08-06 02:44:34
● 2026-04-27 16:21:52
●MXmx.nic.cz2015-08-06 → 2026-04-27 · 2 obs
● 2015-08-06 02:44:34
● 2026-04-27 16:21:52
○A2001:1488:0:3::72015-08-06 → 2016-12-12 · 4 obs
● 2015-08-06 02:44:34
● 2016-12-12 10:06:52
○ 2018-11-30 09:53:08
○ 2026-04-27 16:21:52
●A2001:1488:800:400::2:962026-02-22 → 2026-04-27 · 3 obs
○ 2018-11-30 09:53:08
● 2026-02-22 14:07:22
● 2026-04-27 16:21:52
○A2001:1488:ac15:ff90::1302018-11-30 → 2018-11-30 · 4 obs
○ 2016-12-12 10:06:52
● 2018-11-30 09:53:08
○ 2026-02-22 14:07:22
○ 2026-04-27 16:21:52
○A217.31.192.1302018-11-30 → 2018-11-30 · 4 obs
○ 2016-12-12 10:06:52
● 2018-11-30 09:53:08
○ 2026-02-22 14:07:22
○ 2026-04-27 16:21:52
●A217.31.204.962026-02-22 → 2026-04-27 · 3 obs
○ 2018-11-30 09:53:08
● 2026-02-22 14:07:22
● 2026-04-27 16:21:52
○A217.31.205.552015-08-06 → 2016-12-12 · 4 obs
● 2015-08-06 02:44:34
● 2016-12-12 10:06:52
○ 2018-11-30 09:53:08
○ 2026-04-27 16:21:52

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
czc.ns.nic.cz, b.ns.nic.cz, a.ns.nic.cz, d.ns.nic.cz-
dnssec-validator.czsld1.ns.nic.cz, sld2.ns.nic.cz, sld3.ns.nic.cz-

✅ Authoritative Response

Server:217.31.207.98

NS records: sld1.ns.nic.cz, sld2.ns.nic.cz, sld3.ns.nic.cz

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1138ms | Queries: -

📄 Records

TypeCountSample Data
A1217.31.204.96
AAAA12001:1488:800:400::2:96
NS3sld1.ns.nic.cz, sld2.ns.nic.cz...
MX2mail.nic.cz (pri: 10), mx.nic.cz (pri: 15)
SOA1sld1.ns.nic.cz hostmaster.nic.cz

Analysis

Hierarchy

The parent of www.dnssec-validator.cz is dnssec-validator.cz.

IP Addresses

Two IP numbers are pointed to by dnssec-validator.cz: 2001:1488:800:400::2:96 and 217.31.204.96.

other host names include gitlab-r-01.nic.cz, knot-resolver.cz, datovka.cz, gitlab.nic.cz and jakfungujedns.cz; they share IP numbers with dnssec-validator.cz.

Name Servers

dnssec-validator.cz is delegated to three name servers sld1.ns.nic.cz, sld2.ns.nic.cz and sld3.ns.nic.cz.

dnssec-validator.cz at least partially shares name servers with other domains, for instance cznic.org, esens.cz, 202.31.217.in-addr.arpa, knot-resolver.cz and dnssec.cz.

Host names with two IP numbers:

sld1.ns.nic.cz points to 2001:1488:800:126::98 and 217.31.207.98; sld2.ns.nic.cz points to 2001:1488:800:126::99 and 217.31.207.99; sld3.ns.nic.cz points to 2001:1ab0:7e1e:d150::8:1 and 217.31.57.6.

Mail Servers

dnssec-validator.cz is handled by two mail servers: mail.nic.cz and mx.nic.cz.

dnssec-validator.cz uses the same mail server setup as other domains, for instance knot-resolver.cz, dnssec.cz, test-ipv6.cz, csnog.eu and stoponline.cz.

dnssec-validator.cz shares at least partially some mail servers with other domains, for instance fred.nic.cz, test-ipv6.nic.cz, lists.nic.cz, cctld-managers.org and gw.nic.cz.

Host names with two IP numbers:

mail.nic.cz points to 2001:1488:800:400::400 and 217.31.204.67.

mx.nic.cz points to 2001:1ab0:7e1e:d150::8:157 and 217.31.57.157.