`modrovic.cz`

DNSSEC	🔒 Signed (DS record present)
A	77.93.216.46^{🇨🇿 MASTER-AS77.93.192.0/19 MASTER-NET-4}
		PTR	`77-93-216-46.static.masterinter.net`
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 2025-12-27 #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=1778730434

WOT: SAFE (64/100)

Same first word

modrovic.cz

Similar names

vidrocom.com

DNS History

7 records (4 active, 3 former)

●NSns.web4u.cz2015-08-19 → 2026-05-14 · 2 obs

● 2015-08-19 01:41:08
● 2026-05-14 04:02:18

●NSns2.web4u.cz2015-08-19 → 2026-05-14 · 2 obs

● 2015-08-19 01:41:08
● 2026-05-14 04:02:18

○MXmail.modrovic.cz2015-08-19 → 2017-03-31 · 4 obs

● 2015-08-19 01:41:08
● 2017-03-31 19:48:28
○ 2026-03-30 04:07:06
○ 2026-05-14 04:02:18

●MXmx.web4u.cz2026-03-30 → 2026-05-14 · 3 obs

○ 2017-03-31 19:48:28
● 2026-03-30 04:07:06
● 2026-05-14 04:02:18

●A77.93.216.462026-03-30 → 2026-05-14 · 3 obs

○ 2017-03-31 19:48:28
● 2026-03-30 04:07:06
● 2026-05-14 04:02:18

○A83.167.247.1162016-03-21 → 2017-03-31 · 5 obs

○ 2015-12-07 15:02:30
● 2016-03-21 01:40:10
● 2017-03-31 19:48:28
○ 2026-03-30 04:07:06
○ 2026-05-14 04:02:18

○A83.167.247.1212015-08-19 → 2015-12-07 · 4 obs

● 2015-08-19 01:41:08
● 2015-12-07 15:02:30
○ 2016-03-21 01:40:10
○ 2026-05-14 04:02:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	8 records
modrovic.cz	ns.web4u.cz, ns2.web4u.cz	4 records

✅ Authoritative Response

Server:85.207.53.12

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

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1227ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`77.93.216.46`
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: 12

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

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

Analysis

IP Addresses

modrovic.cz points to a single IP address: 77.93.216.46.

Other host names such as duoweb.cz, testypotravin.cz, altex.cz, pardubicky-kraj.cz and imap.duoweb.cz share IP numbers with modrovic.cz.

Name Servers

modrovic.cz is delegated to two name servers: ns2.web4u.cz and ns.web4u.cz.

modrovic.cz uses the same name server setup as other domains, including zauzoo.com, autari.cz, luvr.cz, snetsro.cz and homeforlife.cz.

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

The mail server for modrovic.cz is mx.web4u.cz.

modrovic.cz uses the same mail server setup as other domains, for instance led-profi.cz, demux.cz, ema.cz, trilimi.com and dtools.eu.

Hostname mx.web4u.cz resolves to two IPs: 2001:1568::7012 and 81.91.87.12.

modrovic.cz - robtex.com

modrovic.cz

cz