`studiointernet.cz`

DNSSEC	⚠️ Not signed
A	109.123.222.132^{🇨🇿 CASABLANCA-AS109.123.216.0/21 Casablanca INT}
		PTR	`server.smable.cz`
NS	`shinzon.blueboard.cz` ⭐
		A	2a00:1ed0:45::b^{🇨🇿 VSHOSTING2a00:1ed0::/32}
			PTR	`shinzon.blueboard.cz`
		A	178.251.187.7^{🇨🇿 VSHOSTING178.251.184.0/21}
			PTR	`shinzon.blueboard.cz`
NS	`jaguar.blueboard.cz` ⚠️ Not in zone NS records
		A	2a00:1ed0:45::c^{🇨🇿 VSHOSTING2a00:1ed0::/32}
			PTR	`jaguar.blueboard.cz`
		A	178.251.187.8^{🇨🇿 VSHOSTING178.251.184.0/21}
			PTR	`jaguar.blueboard.cz`
NS	`ns2.blueboard.cz`
		A	2a01:4f8:13b:8d4::2^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
		A	195.201.57.122^{🇩🇪 Hetzner195.201.0.0/16 HETZNER-DC}
			PTR	`ns2.blueboard.cz`
MX	`jaguar.blueboard.cz` ⭐
		A	2a00:1ed0:45::c^{🇨🇿 VSHOSTING2a00:1ed0::/32}
			PTR	`jaguar.blueboard.cz`
		A	178.251.187.8^{🇨🇿 VSHOSTING178.251.184.0/21}
			PTR	`jaguar.blueboard.cz`
TXT	`v=spf1 a mx include:spf.blueboard.cz -all`
SOA	`shinzon.blueboard.cz`hostmaster@shinzon.blueboard.cz 2010-01-22 #21

`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=1771291036

Same first word

studiointernet.cz

studiointernet.pl

Similar names

internetstudio.gr

internetstudio.nl

internetstudio.com.au

internetstudio.pl

internetstudio.lt

internetstudio.hu

DNS History

14 records (5 active, 9 former)

●NSjaguar.blueboard.cz2026-02-21 → 2026-03-01 · 3 obs

○ 2015-07-15 05:19:10
● 2026-02-21 21:58:58
● 2026-03-01 12:29:20

●NSns2.blueboard.cz2015-07-15 → 2026-03-01 · 2 obs

● 2015-07-15 05:19:10
● 2026-03-01 12:29:20

●NSshinzon.blueboard.cz2015-07-15 → 2026-03-01 · 2 obs

● 2015-07-15 05:19:10
● 2026-03-01 12:29:20

○MXalt1.aspmx.l.google.com2015-07-15 → 2015-11-20 · 4 obs

● 2015-07-15 05:19:10
● 2015-11-20 09:23:40
○ 2016-02-24 02:38:20
○ 2026-03-01 12:29:20

○MXalt2.aspmx.l.google.com2015-07-15 → 2015-11-20 · 4 obs

● 2015-07-15 05:19:10
● 2015-11-20 09:23:40
○ 2016-02-24 02:38:20
○ 2026-03-01 12:29:20

○MXaspmx.l.google.com2015-07-15 → 2015-11-20 · 4 obs

● 2015-07-15 05:19:10
● 2015-11-20 09:23:40
○ 2016-02-24 02:38:20
○ 2026-03-01 12:29:20

○MXaspmx2.googlemail.com2015-07-15 → 2015-11-20 · 4 obs

● 2015-07-15 05:19:10
● 2015-11-20 09:23:40
○ 2016-02-24 02:38:20
○ 2026-03-01 12:29:20

○MXaspmx3.googlemail.com2015-07-15 → 2015-11-20 · 4 obs

● 2015-07-15 05:19:10
● 2015-11-20 09:23:40
○ 2016-02-24 02:38:20
○ 2026-03-01 12:29:20

○MXaspmx4.googlemail.com2015-07-15 → 2015-11-20 · 4 obs

● 2015-07-15 05:19:10
● 2015-11-20 09:23:40
○ 2016-02-24 02:38:20
○ 2026-03-01 12:29:20

○MXaspmx5.googlemail.com2015-07-15 → 2015-11-20 · 4 obs

● 2015-07-15 05:19:10
● 2015-11-20 09:23:40
○ 2016-02-24 02:38:20
○ 2026-03-01 12:29:20

●MXjaguar.blueboard.cz2016-02-24 → 2026-03-01 · 3 obs

○ 2015-11-20 09:23:40
● 2016-02-24 02:38:20
● 2026-03-01 12:29:20

○MXns2.blueboard.cz2016-02-24 → 2017-02-01 · 5 obs

○ 2015-11-20 09:23:40
● 2016-02-24 02:38:20
● 2017-02-01 15:23:00
○ 2026-02-21 21:58:58
○ 2026-03-01 12:29:20

●A109.123.222.1322026-02-21 → 2026-03-01 · 3 obs

○ 2017-02-01 15:23:00
● 2026-02-21 21:58:58
● 2026-03-01 12:29:20

○A217.11.249.1392015-07-15 → 2017-02-01 · 4 obs

● 2015-07-15 05:19:10
● 2017-02-01 15:23:00
○ 2026-02-21 21:58:58
○ 2026-03-01 12:29:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	d.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz	8 records
studiointernet.cz	ns2.blueboard.cz, jaguar.blueboard.cz, shinzon.blueboard.cz	3 records

✅ Authoritative Response

Server: 195.201.57.122

NS records: ns2.blueboard.cz, jaguar.blueboard.cz, shinzon.blueboard.cz

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studiointernet.cz (unsigned zone)

⏱️ Timing

Total: 487ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`109.123.222.132`
NS	2	`ns2.blueboard.cz, shinzon.blueboard.cz`
MX	1	`jaguar.blueboard.cz (pri: 10)`
TXT	1	`v=spf1 a mx include:spf.blueboard.cz -al`
SOA	1	`shinzon.blueboard.cz hostmaster.shinzon.`

📌 Glue Records Collected

Total: 11

In-bailiwick: 8 (d.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz...)

Out-of-bailiwick: 3 (shinzon.blueboard.cz, jaguar.blueboard.cz, ns2.blueboard.cz)

Analysis

IP Addresses

studiointernet.cz resolves to a single IP address: 109.123.222.132.

Other host names such as smable.cz, mx.uksecondhand.cz and server.smable.cz share IP numbers with studiointernet.cz.

Name Servers

studiointernet.cz is delegated to three name servers: jaguar.blueboard.cz, ns2.blueboard.cz and shinzon.blueboard.cz.

studiointernet.cz at least partially shares name servers with other domains, including telnes.cz, daniel-fucik.com, zeny-in.cz, austria-sanmarino.at and guide-prague.com.

These name servers are often used together with ns2.miniserver.cz.

Host names with two IP numbers:

jaguar.blueboard.cz points to: 2a00:1ed0:45::c and 178.251.187.8

ns2.blueboard.cz points to: 2a01:4f8:13b:8d4::2 and 195.201.57.122

shinzon.blueboard.cz points to: 2a00:1ed0:45::b and 178.251.187.7

Mail Servers

studiointernet.cz is handled by a single mail server, jaguar.blueboard.cz.

studiointernet.cz shares its mail server setup with other domains, including nanospace.info, teatreto.net, candix.sk, canyoningbovec.com and kolednik.cz.

The mail servers for studiointernet.cz are shared with other domains, for instance sekamtravu.cz, vipfishingtrips.com, centrumdruid.cz, kzmj.cz and smkompas.sk.

studiointernet.cz - robtex.com