`activityholding.cz`

DNSSEC	🔒 Signed (DS record present)
A	2a00:4b40:aaaa:2011::6^{🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32}
A	37.9.175.212^{🇸🇰 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	`mailin1.activityholding.cz` ⭐
		A	2a00:4b40:aaaa:2101:45:13:137:110^{🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32}
			PTR	`mx10.websupport.sk`
		A	45.13.137.103^{🇸🇰 WEBSUPPORT-SRO-SK-AS45.13.137.0/24}
			PTR	`m1-u5-mx.websupport.cz`
MX	`mailin2.activityholding.cz`⁽¹⁰⁰⁾
		A	2a00:4b40:aaaa:2101:45:13:137:111^{🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32}
		A	45.13.137.104^{🇸🇰 WEBSUPPORT-SRO-SK-AS45.13.137.0/24}
			PTR	`m1-u6-mx.websupport.cz`
SOA	`ns1.websupport.cz`admin@websupport.cz serial=1757024924

`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=1776021435

Subdomains

mailin1.activityholding.cz

mailin2.activityholding.cz

www.activityholding.cz

Same first word

activityholding.cz

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:45.10.97.13

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: 1010ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`37.9.175.212`
AAAA	1	`2a00:4b40:aaaa:2011::6`
NS	3	`ns1.websupport.cz, ns2.websupport.cz...`
MX	2	`mailin1.activityholding.cz (pri: 10), mailin2.activityholding.cz (pri: 100)`
SOA	1	`ns1.websupport.cz admin.websupport.cz`

Analysis

Hierarchy

activityholding.cz is parent of mailin1.activityholding.cz, mailin2.activityholding.cz and www.activityholding.cz.

IP Addresses

activityholding.cz points to two IP numbers: 2a00:4b40:aaaa:2011::6 and 37.9.175.212.

Other host names, for instance cajei.cat, beceva.com, pragamagica.cz, goldu.de and lp-praha.net share IP numbers with activityholding.cz.

Name Servers

activityholding.cz is delegated to three name servers: ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu.

activityholding.cz at least partially shares its name servers with other domains, for instance kovohrbacek.cz, vodak.net, rajpapiera.sk, forensic.cz and mastercosmosbcn.es.

Host names with two IP numbers:

ns1.websupport.cz points to: 2a10:bbc0::11 and 45.10.97.11.

ns2.websupport.cz points to: 2a02:250:3::12 and 185.71.159.12.

ns3.websupport.eu points to: 2a10:bbc0::13 and 45.10.97.13.

Mail Servers

Two mail servers mailin1.activityholding.cz and mailin2.activityholding.cz handle activityholding.cz.

Host names with two IP numbers: mailin1.activityholding.cz points to 2a00:4b40:aaaa:2101:45:13:137:110 and 45.13.137.103; mailin2.activityholding.cz points to 2a00:4b40:aaaa:2101:45:13:137:111 and 45.13.137.104

activityholding.cz - robtex.com