`pbdsystems.cz`

DNSSEC	🔒 Signed (DS record present)
A	31.31.76.62^{🇨🇿 WEDOS31.31.72.0/21 Internet, a.s.}
		PTR	`debian10.pbdsystems.cz`
		PTR	`debian.pbdsystems.cz`
NS	`ns2.web4u.cz` ⭐
		A	2a02:a40:100:28ff::12^{🇨🇿 BlueTone-AS2a02:a40::/32 Ceske Radiokomunikace, a.s.}
			PTR	`ns2.web4u.cz`
		A	85.207.53.12^{🇨🇿 BlueTone-AS85.207.0.0/16 BlueTone-CRa-CZ Fourth address block}
			PTR	`ns2.web4u.cz`
NS	`ns.web4u.cz`
		A	2001:1568:fd::241^{🇨🇿 WEB4U2001:1568::/33}
			PTR	`ns.web4u.cz`
		A	185.14.224.241^{🇨🇿 WEB4U185.14.224.0/23}
			PTR	`ns.web4u.cz`
MX	`debian.pbdsystems.cz` ⭐
		A	31.31.76.62^{🇨🇿 WEDOS31.31.72.0/21 Internet, a.s.}
			PTR	`debian10.pbdsystems.cz`
			PTR	`debian.pbdsystems.cz`
SOA	`ns.web4u.cz`admin@web4u.cz 2025-01-14 #1

`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.cz`hostmaster@nic.cz serial=1774543637

Subdomains

debian.pbdsystems.cz

debian10.pbdsystems.cz

Same first word

pbdsystems.cz

Similar names

pdbsystems.com

DNS History

6 records (4 active, 2 former)

●NSns.web4u.cz2015-04-18 → 2026-03-26 · 2 obs

● 2015-04-18 08:33:48
● 2026-03-26 17:07:24

●NSns2.web4u.cz2015-04-18 → 2026-03-26 · 2 obs

● 2015-04-18 08:33:48
● 2026-03-26 17:07:24

●MXdebian.pbdsystems.cz2026-02-26 → 2026-03-26 · 3 obs

○ 2017-07-03 07:48:58
● 2026-02-26 04:53:36
● 2026-03-26 17:07:24

○MXmail.pbdsystems.cz2015-04-18 → 2017-07-03 · 4 obs

● 2015-04-18 08:33:48
● 2017-07-03 07:48:58
○ 2026-02-26 04:53:36
○ 2026-03-26 17:07:24

●A31.31.76.622026-02-26 → 2026-03-26 · 3 obs

○ 2017-07-03 07:48:58
● 2026-02-26 04:53:36
● 2026-03-26 17:07:24

○A78.24.8.1432015-04-18 → 2017-07-03 · 4 obs

● 2015-04-18 08:33:48
● 2017-07-03 07:48:58
○ 2026-02-26 04:53:36
○ 2026-03-26 17:07:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz, a.ns.nic.cz	-
pbdsystems.cz	ns.web4u.cz, ns2.web4u.cz	4 records

✅ Authoritative Response

Server:185.14.224.241

NS records: ns.web4u.cz, ns2.web4u.cz

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 964ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`31.31.76.62`
NS	2	`ns.web4u.cz, ns2.web4u.cz`
MX	1	`debian.pbdsystems.cz (pri: 10)`
SOA	1	`ns.web4u.cz admin.web4u.cz`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns.web4u.cz, ns.web4u.cz, ns2.web4u.cz...)

Analysis

Hierarchy

pbdsystems.cz is a parent of debian.pbdsystems.cz and debian10.pbdsystems.cz.

IP Addresses

pbdsystems.cz points to a single IP number: 31.31.76.62.

Other host names, for instance debian.pbdsystems.cz, lounky.cz, mail.lounky.cz and debian10.pbdsystems.cz share IP numbers with pbdsystems.cz.

Name Servers

Delegation for pbdsystems.cz rests with two name servers, ns2.web4u.cz and ns.web4u.cz.

pbdsystems.cz shares the same name server setup as other domains, including michalpolak.cz, osin.cz, dtcp.cz, advokat24.cz and jihoceskenadeje.cz.

pbdsystems.cz shares name servers with other domains at least partially, for example varicad.cn.

Host names with two IP numbers: ns2.web4u.cz points to 2a02:a40:100:28ff::12 and 85.207.53.12; ns.web4u.cz points to 2001:1568:fd::241 and 185.14.224.241.

Mail Servers

pbdsystems.cz is handled by a single mail server, debian.pbdsystems.cz.

pbdsystems.cz uses the same mail server setup as other domains, such as lounky.cz.

debian.pbdsystems.cz points to a single IP: 31.31.76.62.

pbdsystems.cz - robtex.com

pbdsystems.cz

cz