`premak.cz`

DNSSEC	⚠️ Not signed
A	93.190.48.14^{🇨🇿 WEB4CE93.190.48.0/21 Web4ce, s.r.o.}
		PTR	`web14.web4ce.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	`mx1.web4ce.cz` ⭐
		A	93.190.48.73^{🇨🇿 WEB4CE93.190.48.0/21 Web4ce, s.r.o.}
			PTR	`mx1.web4ce.cz`
		A	93.190.48.74^{🇨🇿 WEB4CE93.190.48.0/21 Web4ce, s.r.o.}
			PTR	`mx2.web4ce.cz`
		A	93.190.48.75^{🇨🇿 WEB4CE93.190.48.0/21 Web4ce, s.r.o.}
			PTR	`mx3.web4ce.cz`
MX	`mx2.web4ce.cz` ⭐
		A	93.190.48.73^{🇨🇿 WEB4CE93.190.48.0/21 Web4ce, s.r.o.}
			PTR	`mx1.web4ce.cz`
		A	93.190.48.74^{🇨🇿 WEB4CE93.190.48.0/21 Web4ce, s.r.o.}
			PTR	`mx2.web4ce.cz`
		A	93.190.48.75^{🇨🇿 WEB4CE93.190.48.0/21 Web4ce, s.r.o.}
			PTR	`mx3.web4ce.cz`
MX	`mx3.web4ce.cz`⁽¹⁰⁰⁰⁾
		A	93.190.48.73^{🇨🇿 WEB4CE93.190.48.0/21 Web4ce, s.r.o.}
			PTR	`mx1.web4ce.cz`
		A	93.190.48.74^{🇨🇿 WEB4CE93.190.48.0/21 Web4ce, s.r.o.}
			PTR	`mx2.web4ce.cz`
		A	93.190.48.75^{🇨🇿 WEB4CE93.190.48.0/21 Web4ce, s.r.o.}
			PTR	`mx3.web4ce.cz`
TXT	`v=spf1 mx include:spf.web4ce.cz ~all`
SOA	`ns1.web4ce.cz`domeny@web4ce.cz 2026-03-19 #3

`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=1775249235

Same first word

premak.cz

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DNS History

7 records (6 active, 1 former)

●NSns1.web4ce.cz2015-06-24 → 2026-04-03 · 2 obs

● 2015-06-24 08:25:14
● 2026-04-03 21:25:02

●NSns2.web4ce.cz2015-06-24 → 2026-04-03 · 2 obs

● 2015-06-24 08:25:14
● 2026-04-03 21:25:02

●MXmx1.web4ce.cz2015-06-24 → 2026-04-03 · 2 obs

● 2015-06-24 08:25:14
● 2026-04-03 21:25:02

●MXmx2.web4ce.cz2015-06-24 → 2026-04-03 · 2 obs

● 2015-06-24 08:25:14
● 2026-04-03 21:25:02

●MXmx3.web4ce.cz2015-06-24 → 2026-04-03 · 2 obs

● 2015-06-24 08:25:14
● 2026-04-03 21:25:02

○A93.190.48.12015-06-24 → 2017-06-06 · 4 obs

● 2015-06-24 08:25:14
● 2017-06-06 07:51:38
○ 2026-03-27 08:09:54
○ 2026-04-03 21:25:02

●A93.190.48.142026-03-27 → 2026-04-03 · 3 obs

○ 2017-06-06 07:51:38
● 2026-03-27 08:09:54
● 2026-04-03 21:25:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	b.ns.nic.cz, a.ns.nic.cz, d.ns.nic.cz, c.ns.nic.cz	-
premak.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 premak.cz (unsigned zone)

⏱️ Timing

Total: 547ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`93.190.48.14`
NS	2	`ns1.web4ce.cz, ns2.web4ce.cz`
MX	3	`mx2.web4ce.cz (pri: 10), mx1.web4ce.cz (pri: 10)...`
TXT	1	`v=spf1 mx include:spf.web4ce.cz ~all`
SOA	1	`ns1.web4ce.cz domeny.web4ce.cz`

📌 Glue Records Collected

Total: 2

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

Analysis

IP Addresses

premak.cz resolves to one IP number: 93.190.48.14.

other host names including ultimasoft.eu, cestaintegrace.cz, montylog.cz, likto.eu and poliklinikarehaka.cz share IP numbers with premak.cz.

Name Servers

premak.cz is delegated to two name servers ns1.web4ce.cz and ns2.web4ce.cz.

premak.cz shares the same name server setup as other domains, for instance 0.0.6.c.2.0.a.2.ip6.arpa, xdream.cz, lade.cz, lifecoaching.cz and katastry.cz.

Host names with two IP numbers:

The host name ns1.web4ce.cz points to 2a02:c600:0:4::1 and 93.190.48.250; the host name ns2.web4ce.cz points to 2a02:c600:0:4::2 and 93.190.49.250.

Mail Servers

premak.cz is handled by three mail servers: mx1.web4ce.cz, mx2.web4ce.cz and mx3.web4ce.cz.

premak.cz shares some mail servers with other domains, at least partially, for instance smev.cz, teamcoaching.cz, blattin.cz, detskytanec.cz and a3d.cz.