`difference.cz`

DNSSEC	⚠️ Not signed
NS	`ins1.ji.cz` ⭐
		A	213.226.224.50^{🇨🇿 MSOFT-AS213.226.224.0/20 M-SOFT s.r.o. Jihlava The Czech Republic}
			PTR	`ins1.ji.cz`
NS	`ins2.ji.cz`
		A	213.226.224.51^{🇨🇿 MSOFT-AS213.226.224.0/20 M-SOFT s.r.o. Jihlava The Czech Republic}
			PTR	`ins2.ji.cz`
MX	`bar1.ji.cz` ⭐
MX	`bar2.ji.cz`⁽²⁰⁾
		A	213.226.224.17^{🇨🇿 MSOFT-AS213.226.224.0/20 M-SOFT s.r.o. Jihlava The Czech Republic}
			PTR	`iron-b-in.ji.cz`
TXT	`v=spf1 mx a ip4:79.141.249.67 include:spf.m-soft.cz ~all`
SOA	`ins1.ji.cz`hostmaster@ji.cz 2026-07-22 #2

`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=1784857641

Same first word

DNS History

6 records (4 active, 2 former)

●NSins1.ji.cz2018-11-14 → 2026-07-24 · 3 obs

○ 2017-01-28 17:45:26
● 2018-11-14 02:39:56
● 2026-07-24 03:02:50

●NSins2.ji.cz2018-11-14 → 2026-07-24 · 3 obs

○ 2017-01-28 17:45:26
● 2018-11-14 02:39:56
● 2026-07-24 03:02:50

○NSns.ji.cz2015-08-06 → 2017-01-28 · 4 obs

● 2015-08-06 06:10:02
● 2017-01-28 17:45:26
○ 2018-11-14 02:39:56
○ 2026-07-24 03:02:50

○NSns.jihlava.net2015-08-06 → 2017-01-28 · 4 obs

● 2015-08-06 06:10:02
● 2017-01-28 17:45:26
○ 2018-11-14 02:39:56
○ 2026-07-24 03:02:50

●MXbar1.ji.cz2015-08-06 → 2026-07-24 · 2 obs

● 2015-08-06 06:10:02
● 2026-07-24 03:02:50

●MXbar2.ji.cz2015-08-06 → 2026-07-24 · 2 obs

● 2015-08-06 06:10:02
● 2026-07-24 03:02:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz, a.ns.nic.cz	-
difference.cz	ins1.ji.cz, ins2.ji.cz	2 records

✅ Authoritative Response

Server:213.226.224.50

NS records: ins1.ji.cz, ins2.ji.cz

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for difference.cz (unsigned zone)

⏱️ Timing

Total: 1256ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`ins2.ji.cz, ins1.ji.cz`
MX	2	`bar1.ji.cz (pri: 10), bar2.ji.cz (pri: 20)`
TXT	1	`v=spf1 mx a ip4:79.141.249.67 include:sp`
SOA	1	`ins1.ji.cz hostmaster.ji.cz`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ins1.ji.cz, ins2.ji.cz)

Analysis

Name Servers

Two name servers handle the delegation for difference.cz: ins1.ji.cz and ins2.ji.cz.

difference.cz has the same name server delegation as a number of other domains, such as 226.226.213.in-addr.arpa, teslaji.cz, penguin.ji.cz and two more.

difference.cz has at least partial name server overlap with other domains, such as pribyl.ji.cz, trifoil.cz, rotaryjihlavaaukce.cz and two others.

ins1.ji.cz directs to 213.226.224.50 and ins2.ji.cz directs to 213.226.224.51; each host name points to exactly one IP number.

Mail Servers

The MX records for difference.cz point to two mail servers: bar1.ji.cz and bar2.ji.cz.

difference.cz has the same mail server arrangement as a number of other domains, for example segajihlava.cz, sapeli.net, jihlava.net and two more.

difference.cz shares at least some of its mail servers with other domains — for example nqa.cz, jihlavske-listy.cz, pojer.cz and two more.

These mail servers tend to be used in combination with the mail servers nqa-cz.mail.protection.outlook.com and relay.zoner.com.

Hosts that resolve to one IP address:

The hostname bar2.ji.cz resolves to 213.226.224.17.

difference.cz - robtex.com

difference.cz

cz