managedserver.cz - dns.ninja

`managedserver.cz`

DNSSEC	🔒 Signed (DS record present)
A	81.91.86.26^{🇨🇿 WEB4U81.91.80.0/21}
		PTR	`web4u.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	`mx.web4u.cz` ⭐
		A	2001:1568::7012^{🇨🇿 WEB4U2001:1568::/33}
			PTR	`mx.web4u.cz`
		A	81.91.87.12^{🇨🇿 WEB4U81.91.80.0/21}
			PTR	`mx.web4u.cz`
SOA	`ns.web4u.cz`admin@web4u.cz 2007-05-04 #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=1786441647

Subdomains

mail.managedserver.cz

Same first word

Similar names

dreamavengers.com

servermanaged.com

servermanaged.it

DNS History

5 records (4 active, 1 former)

●NSns.web4u.cz2015-07-19 → 2026-08-11 · 2 obs

● 2015-07-19 01:18:22
● 2026-08-11 10:40:44

●NSns2.web4u.cz2015-07-19 → 2026-08-11 · 2 obs

● 2015-07-19 01:18:22
● 2026-08-11 10:40:44

○MXmail.managedserver.cz2015-07-19 → 2017-02-17 · 4 obs

● 2015-07-19 01:18:22
● 2017-02-17 21:38:52
○ 2026-04-18 19:56:18
○ 2026-08-11 10:40:44

●MXmx.web4u.cz2026-04-18 → 2026-08-11 · 3 obs

○ 2017-02-17 21:38:52
● 2026-04-18 19:56:18
● 2026-08-11 10:40:44

●A81.91.86.262015-07-19 → 2026-08-11 · 2 obs

● 2015-07-19 01:18:22
● 2026-08-11 10:40:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	b.ns.nic.cz, d.ns.nic.cz, a.ns.nic.cz, c.ns.nic.cz	-
managedserver.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: 785ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`81.91.86.26`
NS	2	`ns.web4u.cz, ns2.web4u.cz`
MX	1	`mx.web4u.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

managedserver.cz serves as the parent of mail.managedserver.cz.

IP Addresses

managedserver.cz resolves to just one IP address, 81.91.86.26.

Two other host names, along with www.web4you.cz, pravidla.web4u.cz and www2.web4you.cz, also share IP numbers with managedserver.cz.

Name Servers

managedserver.cz uses two name servers for its delegation: ns2.web4u.cz and ns.web4u.cz.

managedserver.cz shares its NS records with other domains, for example msebera.cz, mycrony.cz, inpasolutions.com and two others.

The two host names ns2.web4u.cz and ns.web4u.cz each have a pair of IP addresses: ns2.web4u.cz has 85.207.53.12 and 2a02:a40:100:28ff::12, and ns.web4u.cz has 185.14.224.241 and 2001:1568:fd::241.

Mail Servers

The sole mail server for managedserver.cz is mx.web4u.cz.

Among the domains sharing a mail server setup with managedserver.cz are popron.eu, zelene-potraviny.net, precis.cz and two others.

The mail servers of managedserver.cz are at least partially shared with other domains, including lascort.cz.

mx.web4u.cz has two IP addresses: 81.91.87.12 and 2001:1568::7012.