`altustc.cz`

DNSSEC	🔒 Signed (DS record present)
A	2a00:4b40:aaaa:2005::5^{🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32}
A	37.9.175.163^{🇸🇰 WEBSUPPORT-SRO-SK-AS37.9.175.0/24}
NS	`ns1.websupport.cz` ⭐
		A	2a10:bbc0::11^{🇨🇿 ACTIVE24-AS2a10:bbc0::/32}
			PTR	`ns1.websupport.eu`
		A	45.10.97.11^{🇨🇿 ACTIVE24-AS45.10.97.0/24}
			PTR	`ns1.websupport.eu`
NS	`ns2.websupport.cz`
		A	2a02:250:3::12^{🇸🇪 ACTIVE24-AS2a02:250:3::/48}
			PTR	`ns2.websupport.eu`
		A	185.71.159.12^{🇸🇪 ACTIVE24-AS185.71.159.0/24}
			PTR	`ns2.websupport.eu`
NS	`ns3.websupport.eu`
		A	2a10:bbc0::13^{🇨🇿 ACTIVE24-AS2a10:bbc0::/32}
			PTR	`ns3.websupport.eu`
		A	45.10.97.13^{🇨🇿 ACTIVE24-AS45.10.97.0/24}
			PTR	`ns3.websupport.eu`
MX	`altustc-cz.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::a^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-du0pr03cu00102.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::b^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-dbbpr03cu00103.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::4^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am0pr04cu00504.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::b^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am7pr05cu00103.inbound.protection.outlook.com`
		A	52.101.68.0^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db3pr0202cu00100.inbound.protection.outlook.com`
		A	52.101.68.12^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db9pr02cu00204.inbound.protection.outlook.com`
		A	52.101.68.16^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db4pr02cu00400.inbound.protection.outlook.com`
		A	52.101.73.6^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am6pr04cu00306.inbound.protection.outlook.com`
TXT	`MS=ms28703239`
TXT	`v=spf1 include:spf.protection.outlook.com include:_spf.m1.websupport.sk -all`
SOA	`ns1.websupport.cz`admin@websupport.cz serial=1740431892

`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=1785309442

Subdomains

fw.altustc.cz

mx.altustc.cz

Same first word

altustc.cz

Similar names

(0x736c7574)cat.com

tutalcs.com

atcults.com

atlcuts.com

DNS History

22 records (6 active, 16 former)

○NSalfa.ns.active24.cz2015-08-29 → 2017-06-10 · 5 obs

○ 2009-01-12 16:20:20
● 2015-08-29 09:09:26
● 2017-06-10 20:51:08
○ 2026-04-06 14:24:30
○ 2026-07-29 07:46:06

○NSbeta.ns.active24.cz2015-08-29 → 2017-06-10 · 5 obs

○ 2009-01-12 16:20:20
● 2015-08-29 09:09:26
● 2017-06-10 20:51:08
○ 2026-04-06 14:24:30
○ 2026-07-29 07:46:06

○NSgama.ns.active24.sk2015-08-29 → 2017-06-10 · 5 obs

○ 2009-01-12 16:20:20
● 2015-08-29 09:09:26
● 2017-06-10 20:51:08
○ 2026-04-06 14:24:30
○ 2026-07-29 07:46:06

○NSms.globe.cz2009-01-12 → 2009-01-12 · 3 obs

● 2009-01-12 16:20:20
○ 2015-08-29 09:09:26
○ 2026-07-29 07:46:06

○NSns.globe.cz2009-01-12 → 2017-06-10 · 4 obs

● 2009-01-12 16:20:20
● 2017-06-10 20:51:08
○ 2026-04-06 14:24:30
○ 2026-07-29 07:46:06

●NSns1.websupport.cz2026-04-06 → 2026-07-29 · 3 obs

○ 2017-06-10 20:51:08
● 2026-04-06 14:24:30
● 2026-07-29 07:46:06

●NSns2.websupport.cz2026-04-06 → 2026-07-29 · 3 obs

○ 2017-06-10 20:51:08
● 2026-04-06 14:24:30
● 2026-07-29 07:46:06

●NSns3.websupport.eu2026-04-06 → 2026-07-29 · 3 obs

○ 2017-06-10 20:51:08
● 2026-04-06 14:24:30
● 2026-07-29 07:46:06

●MXaltustc-cz.mail.protection.outlook.com2026-04-06 → 2026-07-29 · 3 obs

○ 2017-06-10 20:51:08
● 2026-04-06 14:24:30
● 2026-07-29 07:46:06

○MXax.virusfree.cz2016-06-19 → 2017-06-10 · 5 obs

○ 2016-02-08 09:48:32
● 2016-06-19 10:36:04
● 2017-06-10 20:51:08
○ 2026-04-06 14:24:30
○ 2026-07-29 07:46:06

○MXbx.virusfree.cz2016-06-19 → 2017-06-10 · 5 obs

○ 2016-02-08 09:48:32
● 2016-06-19 10:36:04
● 2017-06-10 20:51:08
○ 2026-04-06 14:24:30
○ 2026-07-29 07:46:06

○MXcx.spamfree.cz2016-06-19 → 2017-06-10 · 5 obs

○ 2016-02-08 09:48:32
● 2016-06-19 10:36:04
● 2017-06-10 20:51:08
○ 2026-04-06 14:24:30
○ 2026-07-29 07:46:06

○MXdx.spamfree.cz2016-06-19 → 2017-06-10 · 5 obs

○ 2016-02-08 09:48:32
● 2016-06-19 10:36:04
● 2017-06-10 20:51:08
○ 2026-04-06 14:24:30
○ 2026-07-29 07:46:06

○MXmx.altustc.cz2009-01-12 → 2016-02-08 · 4 obs

● 2009-01-12 16:20:20
● 2016-02-08 09:48:32
○ 2016-06-19 10:36:04
○ 2026-07-29 07:46:06

○MXmx.smtp.cz2009-01-12 → 2016-02-08 · 4 obs

● 2009-01-12 16:20:20
● 2016-02-08 09:48:32
○ 2016-06-19 10:36:04
○ 2026-07-29 07:46:06

●A2a00:4b40:aaaa:2005::52026-04-06 → 2026-07-29 · 3 obs

○ 2017-06-10 20:51:08
● 2026-04-06 14:24:30
● 2026-07-29 07:46:06

○A2a02:4a8:ac24:102::96:672015-08-29 → 2015-08-29 · 4 obs

○ 2009-01-12 16:20:20
● 2015-08-29 09:09:26
○ 2015-12-08 05:41:06
○ 2026-07-29 07:46:06

○A2a02:4a8:ac24:108::96:1442015-12-08 → 2017-06-10 · 5 obs

○ 2015-08-29 09:09:26
● 2015-12-08 05:41:06
● 2017-06-10 20:51:08
○ 2026-04-06 14:24:30
○ 2026-07-29 07:46:06

●A37.9.175.1632026-04-06 → 2026-07-29 · 3 obs

○ 2017-06-10 20:51:08
● 2026-04-06 14:24:30
● 2026-07-29 07:46:06

○A81.95.96.1242009-01-12 → 2009-01-12 · 3 obs

● 2009-01-12 16:20:20
○ 2015-08-29 09:09:26
○ 2026-07-29 07:46:06

○A81.95.96.1442015-12-08 → 2017-06-10 · 5 obs

○ 2015-08-29 09:09:26
● 2015-12-08 05:41:06
● 2017-06-10 20:51:08
○ 2026-04-06 14:24:30
○ 2026-07-29 07:46:06

○A81.95.96.672015-08-29 → 2015-08-29 · 4 obs

○ 2009-01-12 16:20:20
● 2015-08-29 09:09:26
○ 2015-12-08 05:41:06
○ 2026-07-29 07:46:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	-
altustc.cz	ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu	-

✅ Authoritative Response

Server:185.71.159.12

NS records: ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 991ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`37.9.175.163`
AAAA	1	`2a00:4b40:aaaa:2005::5`
NS	3	`ns1.websupport.cz, ns2.websupport.cz...`
MX	1	`altustc-cz.mail.protection.outlook.com (`
TXT	2	`MS=ms28703239, v=spf1 include:spf.protection.outlook.co`
SOA	1	`ns1.websupport.cz admin.websupport.cz`

Analysis

Hierarchy

altustc.cz serves as the parent of fw.altustc.cz and mx.altustc.cz.

IP Addresses

altustc.cz points to the IP addresses 37.9.175.163 and 2a00:4b40:aaaa:2005::5

apicor.cz, dvere-janda.cz, jeseniknadodrou.net plus two other host names have IP numbers in common with altustc.cz.

Name Servers

altustc.cz is served by three name servers: ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu.

The name servers of altustc.cz overlap at least partially with those of other domains — among them aulaescolaeuropea.es, rosenet.eu, beautyconceptshop.cz and two more.

The hostnames ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu each direct to two IP addresses — ns1.websupport.cz to 45.10.97.11 and 2a10:bbc0::11, ns2.websupport.cz to 185.71.159.12 and 2a02:250:3::12, and ns3.websupport.eu to 45.10.97.13 and 2a10:bbc0::13.

Mail Servers

altustc.cz uses one mail server — altustc-cz.mail.protection.outlook.com.

altustc-cz.mail.protection.outlook.com has 8 IP addresses: 52.101.68.0, 52.101.68.12, 52.101.68.16 plus 5 more.

altustc.cz - robtex.com

altustc.cz

cz

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`altustc.cz`

`cz`