`predmericka.cz`

DNSSEC	⚠️ Not signed
A	89.185.242.57^{🇨🇿 MASTER-AS89.185.224.0/19 MASTER-NET-3}
		PTR	`aban.dathen.com`
NS	`ns2.pipni.cz` ⭐
		A	2a01:430:220::3^{🇨🇿 MASTER-AS2a01:430::/32 MASTER-IPV6-1-MAI-CZ}
			PTR	`ns2.pipni.cz`
		A	83.167.247.20^{🇨🇿 MASTER-AS83.167.224.0/19 MASTER-NET-5}
			PTR	`ns2.pipni.cz`
NS	`ns.pipni.cz` ⚠️ Not in zone NS records
		A	93.185.104.4^{🇨🇿 VSHOSTING93.185.96.0/20 II.}
			PTR	`ns.pipni.cz`
NS	`ns3.pipni.cz`
		A	2a01:430:220::4^{🇨🇿 MASTER-AS2a01:430::/32 MASTER-IPV6-1-MAI-CZ}
			PTR	`ns3.pipni.cz`
		A	83.167.247.153^{🇨🇿 MASTER-AS83.167.224.0/19 MASTER-NET-5}
			PTR	`ns3.pipni.cz`
MX	`mta83.hosting-centre.cz` ⭐
		A	194.228.39.83^{🇨🇿 O2-CZECH-REPUBLIC194.228.0.0/17 CZ.CZNET}
			PTR	`mta83.hosting-centre.cz`
TXT	`v=spf1 mx a:mta83.hosting-centre.cz a:mta.mta83.hosting-centre.cz -all`
SOA	`ns.pipni.cz`pipni@pipni.cz serial=395520448

`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=1774570636

Subdomains

mail.predmericka.cz

Same first word

predmericka.cz

DNS History

11 records (5 active, 6 former)

●NSns.pipni.cz2015-05-31 → 2026-03-27 · 2 obs

● 2015-05-31 00:27:10
● 2026-03-27 01:03:06

●NSns2.pipni.cz2015-05-31 → 2026-03-27 · 2 obs

● 2015-05-31 00:27:10
● 2026-03-27 01:03:06

●NSns3.pipni.cz2026-03-27 → 2026-03-27 · 3 obs

○ 2015-05-31 00:27:10
● 2026-03-27 01:03:04
● 2026-03-27 01:03:06

○MXmail.predmericka.cz2015-05-31 → 2016-09-10 · 6 obs

● 2015-05-31 00:27:10
○ 2015-10-14 19:22:30
● 2016-03-18 15:14:40
● 2016-09-10 20:49:12
○ 2020-01-16 05:04:06
○ 2026-03-27 01:03:06

●MXmta83.hosting-centre.cz2026-03-27 → 2026-03-27 · 3 obs

○ 2020-01-16 05:04:06
● 2026-03-27 01:03:04
● 2026-03-27 01:03:06

○MXns2.pipni.cz2015-05-31 → 2016-09-10 · 6 obs

● 2015-05-31 00:27:10
○ 2015-10-14 19:22:30
● 2016-03-18 15:14:40
● 2016-09-10 20:49:12
○ 2020-01-16 05:04:06
○ 2026-03-27 01:03:06

○MXrelay.iol.cz2015-10-14 → 2016-09-10 · 5 obs

○ 2015-05-31 00:27:10
● 2015-10-14 19:22:30
● 2016-09-10 20:49:12
○ 2020-01-16 05:04:06
○ 2026-03-27 01:03:06

○MXsmtp.ceroz.com2015-10-14 → 2016-09-10 · 5 obs

○ 2015-05-31 00:27:10
● 2015-10-14 19:22:30
● 2016-09-10 20:49:12
○ 2020-01-16 05:04:06
○ 2026-03-27 01:03:06

○MXsmtp.hosting-centre.cz2020-01-16 → 2020-01-16 · 4 obs

○ 2016-09-10 20:49:12
● 2020-01-16 05:04:06
○ 2026-03-27 01:03:04
○ 2026-03-27 01:03:06

●A89.185.242.572020-01-16 → 2026-03-27 · 3 obs

○ 2016-09-10 20:49:12
● 2020-01-16 05:04:06
● 2026-03-27 01:03:06

○A93.185.104.202015-05-31 → 2016-09-10 · 4 obs

● 2015-05-31 00:27:10
● 2016-09-10 20:49:12
○ 2020-01-16 05:04:06
○ 2026-03-27 01:03:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz, a.ns.nic.cz	-
predmericka.cz	ns.pipni.cz, ns2.pipni.cz, ns3.pipni.cz	5 records

✅ Authoritative Response

Server:93.185.104.4

NS records: ns.pipni.cz, ns2.pipni.cz, ns3.pipni.cz

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for predmericka.cz (unsigned zone)

⏱️ Timing

Total: 669ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`89.185.242.57`
NS	2	`ns.pipni.cz, ns2.pipni.cz`
MX	1	`mta83.hosting-centre.cz (pri: 10)`
TXT	1	`v=spf1 mx a:mta83.hosting-centre.cz a:mt`
SOA	1	`ns.pipni.cz pipni.pipni.cz`

📌 Glue Records Collected

Total: 5

Out-of-bailiwick: 5 (ns.pipni.cz, ns2.pipni.cz, ns2.pipni.cz...)

Analysis

Hierarchy

The parent of mail.predmericka.cz is predmericka.cz.

IP Addresses

predmericka.cz points to an IP address: 89.185.242.57.

other host names, for instance aban.cz, nastatek.cz, aban.dathen.com and kominictvi-kosik.cz share IP numbers with predmericka.cz.

Name Servers

predmericka.cz is delegated to three name servers ns2.pipni.cz, ns3.pipni.cz and ns.pipni.cz.

predmericka.cz at least partially shares name servers with other domains, for instance sind.cz, sofik.cz, www.met.cz, arcusrock.com and kaps.cz.

Host names with two IP numbers: The host name ns2.pipni.cz points to 2a01:430:220::3 and 83.167.247.20; The host name ns3.pipni.cz points to 2a01:430:220::4 and 83.167.247.153.

Host names with one IP number: The host name ns.pipni.cz points to 93.185.104.4.

Mail Servers

predmericka.cz is handled by a single mail server, mta83.hosting-centre.cz.

predmericka.cz uses the same mail server setup as other domains, for instance rbq.cz, cerozfrucht.cz, vitazel.sk, ceroz.com and agrosad.cz.

predmericka.cz shares at least some mail servers with other domains, including ceroz.sk and agrifresh.sk.

these mail servers are commonly used alongside mailhub2.nameserver.sk and relay.iol.cz.

The host name mta83.hosting-centre.cz points to IP 194.228.39.83.

predmericka.cz - robtex.com

predmericka.cz

cz