`evcommunications.cz`

DNSSEC	🔒 Signed (DS record present)
A	81.91.86.12^{🇨🇿 WEB4U81.91.80.0/21}
		PTR	`php53.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	`mx1.mailchannels.net` ⭐
		A	18.236.29.166^{🇺🇸 Amazon18.236.0.0/15 EC2 PDX prefix}
			PTR	`ec2-18-236-29-166.us-west-2.compute.amazonaws.com`
MX	`mx2.mailchannels.net` ⭐
		A	18.236.29.166^{🇺🇸 Amazon18.236.0.0/15 EC2 PDX prefix}
			PTR	`ec2-18-236-29-166.us-west-2.compute.amazonaws.com`
TXT	`v=spf1 include:_spf.web4u.cz ~all`
SOA	`ns.web4u.cz`admin@web4u.cz 2025-04-30 #0

`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=1776181636

Subdomains

mail.evcommunications.cz

Same first word

evcommunications.net

Similar names

sevcommunication.com

DNS History

6 records (5 active, 1 former)

●NSns.web4u.cz2015-06-13 → 2026-04-14 · 2 obs

● 2015-06-13 16:33:14
● 2026-04-14 16:17:30

●NSns2.web4u.cz2015-06-13 → 2026-04-14 · 2 obs

● 2015-06-13 16:33:14
● 2026-04-14 16:17:30

○MXmail.evcommunications.cz2015-06-13 → 2019-04-11 · 4 obs

● 2015-06-13 16:33:14
● 2019-04-11 19:46:00
○ 2026-04-14 16:17:28
○ 2026-04-14 16:17:30

●MXmx1.mailchannels.net2026-04-14 → 2026-04-14 · 3 obs

○ 2019-04-11 19:46:00
● 2026-04-14 16:17:28
● 2026-04-14 16:17:30

●MXmx2.mailchannels.net2026-04-14 → 2026-04-14 · 3 obs

○ 2019-04-11 19:46:00
● 2026-04-14 16:17:28
● 2026-04-14 16:17:30

●A81.91.86.122015-06-13 → 2026-04-14 · 2 obs

● 2015-06-13 16:33:14
● 2026-04-14 16:17:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz, d.ns.nic.cz	-
evcommunications.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: 961ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`81.91.86.12`
NS	2	`ns.web4u.cz, ns2.web4u.cz`
MX	2	`mx1.mailchannels.net (pri: 10), mx2.mailchannels.net (pri: 10)`
TXT	1	`v=spf1 include:_spf.web4u.cz ~all`
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

evcommunications.cz is the parent of mail.evcommunications.cz.

IP Addresses

evcommunications.cz resolves to one IP number: 81.91.86.12.

other host names including rebasar.cz, me70.com, savon.cz, rdpark.cz and euromedical.cz share IP numbers with evcommunications.cz.

Name Servers

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

evcommunications.cz shares the same name server setup as other domains, for instance tilaccount.cz, natyshop.cz, uokome.cz, araik.cz and pcaudio.cz.

Host names with two IP numbers:

The host name ns2.web4u.cz points to 2a02:a40:100:28ff::12 and 85.207.53.12; the host name ns.web4u.cz points to 2001:1568:fd::241 and 185.14.224.241.

Mail Servers

Two mail servers handle evcommunications.cz: mx1.mailchannels.net and mx2.mailchannels.net.

evcommunications.cz shares the same mail server setup as other domains, for instance maithry.org, checotah.us, codedotshow.com, interaktiva.de and rps-logistic.cz.

evcommunications.cz shares mail servers with other domains to some extent, for instance thepecketts.com.

Host names with a single IP:

mx1.mailchannels.net points to 18.236.29.166.

mx2.mailchannels.net points to 18.236.29.166.

Host names pointing to 18.236.29.166: mx1.mailchannels.net and mx2.mailchannels.net.

evcommunications.cz - robtex.com