`interstudytours.com`

DNSSEC	⚠️ Not signed
A	2001:67c:e94:1:1:5bef:c90e:1^{Blindspot2001:67c:e94::/48 THINLINE-BlindSpot}
		PTR	`rproxy3.thinline.cz`
A	91.239.201.14^{🇨🇿 Blindspot91.239.200.0/23 THINLINE-BlindSpot}
NS	`ns1.thinline.cz` ⭐
		A	2001:67c:e94:0:1:5bef:c8f3:1^{Blindspot2001:67c:e94::/48 THINLINE-BlindSpot}
			PTR	`ns1.thinline.cz`
		A	91.239.200.243^{🇨🇿 Blindspot91.239.200.0/23 THINLINE-BlindSpot}
			PTR	`ns1.thinline.cz`
NS	`ns2.thinline.cz`
		A	2001:4de8:fa22:0:1:5264:602:1^{🇨🇿 QUANTCOM-AS2001:4de8::/32 Dial Telecom, a.s.}
			PTR	`ns2.thinline.cz`
		A	82.100.6.2^{🇨🇿 QUANTCOM-AS82.100.0.0/18 Dial Telecom, a.s.}
			PTR	`ns2.thinline.cz`
NS	`ns3.cesky-hosting.eu`
		A	2001:67c:e94:1:1:5bef:ca12:1^{Blindspot2001:67c:e94::/48 THINLINE-BlindSpot}
			PTR	`ns3.cesky-hosting.eu`
		A	91.239.202.18^{🇨🇿 Blindspot91.239.202.0/23 THINLINE-BlindSpot}
			PTR	`ns3.cesky-hosting.eu`
MX	`mx1c10.thinline.cz` ⭐
		A	2001:67c:e94:0:1:5bef:c8f4:1^{Blindspot2001:67c:e94::/48 THINLINE-BlindSpot}
			PTR	`mx1c10.thinline.cz`
		A	91.239.200.244^{🇨🇿 Blindspot91.239.200.0/23 THINLINE-BlindSpot}
			PTR	`mx1c10.thinline.cz`
MX	`mx1a20.thinline.cz`⁽²⁰⁾
		A	2001:4de8:fa22:0:1:5264:604:1^{🇨🇿 QUANTCOM-AS2001:4de8::/32 Dial Telecom, a.s.}
			PTR	`mx1a20.thinline.cz`
		A	82.100.6.4^{🇨🇿 QUANTCOM-AS82.100.0.0/18 Dial Telecom, a.s.}
			PTR	`mx1a20.thinline.cz`
SOA	`ns1.thinline.cz`hostmaster@interstudytours.com serial=1533054060

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1775997812

Same first word

interstudytours.com

DNS History

15 records (7 active, 8 former)

○NSns.banan.cz2015-07-07 → 2017-03-13 · 4 obs

● 2015-07-07 15:39:46
● 2017-03-13 21:04:42
○ 2020-04-10 23:22:40
○ 2026-04-12 12:46:08

●NSns1.thinline.cz2020-04-10 → 2026-04-12 · 3 obs

○ 2017-03-13 21:04:42
● 2020-04-10 23:22:40
● 2026-04-12 12:46:08

○NSns2.banan.cz2015-07-07 → 2017-03-13 · 4 obs

● 2015-07-07 15:39:46
● 2017-03-13 21:04:42
○ 2020-04-10 23:22:40
○ 2026-04-12 12:46:08

●NSns2.thinline.cz2020-04-10 → 2026-04-12 · 3 obs

○ 2017-03-13 21:04:42
● 2020-04-10 23:22:40
● 2026-04-12 12:46:08

○NSns3.banan.it2015-07-07 → 2017-03-13 · 4 obs

● 2015-07-07 15:39:46
● 2017-03-13 21:04:42
○ 2020-04-10 23:22:40
○ 2026-04-12 12:46:08

●NSns3.cesky-hosting.eu2020-04-10 → 2026-04-12 · 3 obs

○ 2017-03-13 21:04:42
● 2020-04-10 23:22:40
● 2026-04-12 12:46:08

○MXbackup.p.banan.cz2015-07-07 → 2017-03-13 · 4 obs

● 2015-07-07 15:39:46
● 2017-03-13 21:04:42
○ 2020-04-10 23:22:40
○ 2026-04-12 12:46:08

●MXmx1a20.thinline.cz2020-04-10 → 2026-04-12 · 3 obs

○ 2017-03-13 21:04:42
● 2020-04-10 23:22:40
● 2026-04-12 12:46:08

●MXmx1c10.thinline.cz2020-04-10 → 2026-04-12 · 3 obs

○ 2017-03-13 21:04:42
● 2020-04-10 23:22:40
● 2026-04-12 12:46:08

○MXp.banan.cz2015-07-07 → 2017-03-13 · 4 obs

● 2015-07-07 15:39:46
● 2017-03-13 21:04:42
○ 2020-04-10 23:22:40
○ 2026-04-12 12:46:08

●A2001:67c:e94:1:1:5bef:c90e:12026-03-20 → 2026-04-12 · 3 obs

○ 2020-04-10 23:22:40
● 2026-03-20 11:37:22
● 2026-04-12 12:46:08

○A2a00:1ed0:2:1:1:5bef:c90e:12020-04-10 → 2020-04-10 · 4 obs

○ 2017-03-13 21:04:42
● 2020-04-10 23:22:40
○ 2026-03-20 11:37:22
○ 2026-04-12 12:46:08

○A2a01:430:1a::2422015-07-07 → 2017-03-13 · 4 obs

● 2015-07-07 15:39:46
● 2017-03-13 21:04:42
○ 2020-04-10 23:22:40
○ 2026-04-12 12:46:08

○A77.93.211.2422015-07-07 → 2017-03-13 · 4 obs

● 2015-07-07 15:39:46
● 2017-03-13 21:04:42
○ 2020-04-10 23:22:40
○ 2026-04-12 12:46:08

●A91.239.201.142020-04-10 → 2026-04-12 · 3 obs

○ 2017-03-13 21:04:42
● 2020-04-10 23:22:40
● 2026-04-12 12:46:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, j.gtld-servers.net...	-
interstudytours.com	ns1.thinline.cz, ns2.thinline.cz, ns3.cesky-hosting.eu	-

✅ Authoritative Response

Server:82.100.6.2

NS records: ns1.thinline.cz, ns2.thinline.cz, ns3.cesky-hosting.eu

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for interstudytours.com (unsigned zone)

⏱️ Timing

Total: 875ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`91.239.201.14`
AAAA	1	`2001:67c:e94:1:1:5bef:c90e:1`
NS	3	`ns1.thinline.cz, ns2.thinline.cz...`
MX	2	`mx1a20.thinline.cz (pri: 20), mx1c10.thinline.cz (pri: 10)`
SOA	1	`ns1.thinline.cz hostmaster.interstudytou`

Analysis

IP Addresses

interstudytours.com resolves to two IP numbers: 2001:67c:e94:1:1:5bef:c90e:1 and 91.239.201.14.

Other host names, for instance knihamk.cz, konferenceappka.bartvisions.cz, aix.cz, tesacek.cz and kmdane.cz share IP numbers with interstudytours.com.

Name Servers

interstudytours.com is delegated to three name servers: ns1.thinline.cz, ns2.thinline.cz and ns3.cesky-hosting.eu.

interstudytours.com partially shares name servers with other domains; examples include hsparts.pl, numis.cz, netik.eu, moidziadkowie.pl and adma.cz.

Host names with two IP numbers:

ns1.thinline.cz points to 2001:67c:e94:0:1:5bef:c8f3:1 and 91.239.200.243.

ns2.thinline.cz points to 2001:4de8:fa22:0:1:5264:602:1 and 82.100.6.2.

ns3.cesky-hosting.eu points to 2001:67c:e94:1:1:5bef:ca12:1 and 91.239.202.18.

Mail Servers

interstudytours.com is handled by two mail servers: mx1a20.thinline.cz and mx1c10.thinline.cz.

interstudytours.com has the same mail server setup as other domains, including jgdesign.cz, getcreative.cz, sunway.cz, vasestavebniny.cz and m1.cz.

interstudytours.com shares some mail servers with other domains, at least partially, such as cznews.info, nilia.cz, oshtabor.cz, monolok.cz and h-parket.cz.

These mail servers are often used together with mx1b10.thinline.cz and mx1a10.thinline.cz.

Host names with two IP numbers:

mx1a20.thinline.cz points to: 2001:4de8:fa22:0:1:5264:604:1 and 82.100.6.4

mx1c10.thinline.cz points to: 2001:67c:e94:0:1:5bef:c8f4:1 and 91.239.200.244

interstudytours.com - robtex.com