`em2service.cz`

DNSSEC	⚠️ Not signed
A	5.182.148.11^{🇨🇿 TLAP-ZCOM5.182.148.0/22}
		PTR	`emailkampane.cz`
NS	`ns1.web4ce.cz` ⭐
		A	2a02:c600:0:4::1^{🇨🇿 WEB4CE2a02:c600::/29 Web4ce, s.r.o.}
			PTR	`ns1.web4ce.cz`
		A	93.190.48.250^{🇨🇿 WEB4CE93.190.48.0/21 Web4ce, s.r.o.}
			PTR	`ns1.web4ce.cz`
NS	`ns2.web4ce.cz`
		A	2a02:c600:0:4::2^{🇨🇿 WEB4CE2a02:c600::/29 Web4ce, s.r.o.}
			PTR	`ns2.web4ce.cz`
		A	93.190.49.250^{🇨🇿 WEB4CE93.190.48.0/21 Web4ce, s.r.o.}
			PTR	`ns2.web4ce.cz`
MX	`mail.em2service.cz` ⭐
		A	5.182.149.4^{🇨🇿 TLAP-ZCOM5.182.148.0/22}
			PTR	`mail.em7service.cz`
TXT	`yahoo-verification-key=yx/N38ttavmDS/PwxId0EMDtmDsLNIo5e6v/vb0MXNM=`
TXT	`v=spf1 a include:spf.emailkampane.cz ~all`
TXT	`v=spf2.0/pra a include:spf.emailkampane.cz ~all`
SOA	`ns1.web4ce.cz`domeny@web4ce.cz 2024-05-17 #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=1778438836

Subdomains

mail.em2service.cz

m201.em2service.cz

Same first word

em2service.cz

DNS History

7 records (4 active, 3 former)

●NSns1.web4ce.cz2015-08-12 → 2026-05-10 · 2 obs

● 2015-08-12 23:58:04
● 2026-05-10 19:37:36

●NSns2.web4ce.cz2015-08-12 → 2026-05-10 · 2 obs

● 2015-08-12 23:58:04
● 2026-05-10 19:37:36

●MXmail.em2service.cz2026-02-20 → 2026-05-10 · 3 obs

○ 2018-10-24 09:24:24
● 2026-02-20 01:28:12
● 2026-05-10 19:37:36

○MXmsrv7.web4ce.cz2015-08-12 → 2015-08-12 · 3 obs

● 2015-08-12 23:58:04
○ 2015-12-04 13:45:36
○ 2026-05-10 19:37:36

○MXmxavas.forpsi.com2015-12-04 → 2018-10-24 · 5 obs

○ 2015-08-12 23:58:04
● 2015-12-04 13:45:36
● 2018-10-24 09:24:24
○ 2026-02-20 01:28:12
○ 2026-05-10 19:37:36

●A5.182.148.112026-02-20 → 2026-05-10 · 3 obs

○ 2018-10-24 09:24:24
● 2026-02-20 01:28:12
● 2026-05-10 19:37:36

○A93.190.52.622015-08-12 → 2018-10-24 · 4 obs

● 2015-08-12 23:58:04
● 2018-10-24 09:24:24
○ 2026-02-20 01:28:12
○ 2026-05-10 19:37:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	-
em2service.cz	ns1.web4ce.cz, ns2.web4ce.cz	2 records

✅ Authoritative Response

Server:93.190.49.250

NS records: ns1.web4ce.cz, ns2.web4ce.cz

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for em2service.cz (unsigned zone)

⏱️ Timing

Total: 2894ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`5.182.148.11`
NS	2	`ns1.web4ce.cz, ns2.web4ce.cz`
MX	1	`mail.em2service.cz (pri: 10)`
TXT	3	`yahoo-verification-key=yx/N38ttavmDS/Pwx, v=spf1 a include:spf.emailkampane.cz ~al...`
SOA	1	`ns1.web4ce.cz domeny.web4ce.cz`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.web4ce.cz, ns2.web4ce.cz)

Analysis

Hierarchy

em2service.cz is a parent of mail.em2service.cz and m201.em2service.cz.

IP Addresses

em2service.cz points to a single IP: 5.182.148.11.

Other host names, for instance em1service.cz, onlineemail.cz, emailsystem.cz, m103.em1service.cz and goemail.eu share IP numbers with em2service.cz.

Name Servers

Two name servers ns1.web4ce.cz and ns2.web4ce.cz handle delegation for em2service.cz.

em2service.cz uses the same name server setup as other domains, for example asak.cz, beledia.cz, gismentors.cz, vrbovskepirohy.sk and uxy.cz.

Host names with two IP numbers:

ns1.web4ce.cz points to: 2a02:c600:0:4::1 and 93.190.48.250

ns2.web4ce.cz points to: 2a02:c600:0:4::2 and 93.190.49.250

Mail Servers

em2service.cz is handled by a single mail server, mail.em2service.cz.

mail.em2service.cz points to a single IP: 5.182.149.4.

em2service.cz - robtex.com

em2service.cz

cz