`silentcomputer.cz`

DNSSEC	🔒 Signed (DS record present)
A	2a00:4b40:aaaa:2005::7^{🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32}
A	37.9.175.164^{🇸🇰 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.silentcomputer.cz` ⭐
		A	2a00:4b40:aaaa:2101:45:13:137:8^{🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32}
			PTR	`m1-u6-mx.websupport.sk`
		A	45.13.137.9^{🇸🇰 WEBSUPPORT-SRO-SK-AS45.13.137.0/24}
			PTR	`m1-u7-mx.websupport.sk`
MX	`mailin2.silentcomputer.cz`⁽¹⁰⁰⁾
		A	2a00:4b40:aaaa:2101:45:13:137:7^{🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32}
			PTR	`m1-u5-mx.websupport.sk`
		A	45.13.137.8^{🇸🇰 WEBSUPPORT-SRO-SK-AS45.13.137.0/24}
			PTR	`mx20.websupport.at`
SOA	`ns1.websupport.cz`admin@websupport.cz serial=1710545020

`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=1776025054

Subdomains

mail.silentcomputer.cz

mailin1.silentcomputer.cz

mailin2.silentcomputer.cz

Same first word

silentcomputer.cz

silentcomputer.ru

DNS History

16 records (7 active, 9 former)

○NSalfa.ns.active24.cz2015-05-19 → 2017-05-14 · 4 obs

● 2015-05-19 16:33:18
● 2017-05-14 23:15:56
○ 2026-04-04 07:56:20
○ 2026-04-12 21:15:30

○NSbeta.ns.active24.cz2015-05-19 → 2017-05-14 · 4 obs

● 2015-05-19 16:33:18
● 2017-05-14 23:15:56
○ 2026-04-04 07:56:20
○ 2026-04-12 21:15:30

○NSgama.ns.active24.sk2015-05-19 → 2017-05-14 · 4 obs

● 2015-05-19 16:33:18
● 2017-05-14 23:15:56
○ 2026-04-04 07:56:20
○ 2026-04-12 21:15:30

●NSns1.websupport.cz2026-04-04 → 2026-04-12 · 3 obs

○ 2017-05-14 23:15:56
● 2026-04-04 07:56:20
● 2026-04-12 21:15:30

●NSns2.websupport.cz2026-04-04 → 2026-04-12 · 3 obs

○ 2017-05-14 23:15:56
● 2026-04-04 07:56:20
● 2026-04-12 21:15:30

●NSns3.websupport.eu2026-04-04 → 2026-04-12 · 3 obs

○ 2017-05-14 23:15:56
● 2026-04-04 07:56:20
● 2026-04-12 21:15:30

○MXin.smtp.cz2015-05-19 → 2016-08-08 · 4 obs

● 2015-05-19 16:33:18
● 2016-08-08 14:51:24
○ 2017-05-14 23:15:56
○ 2026-04-12 21:15:30

●MXmailin1.silentcomputer.cz2026-04-04 → 2026-04-12 · 3 obs

○ 2017-05-14 23:15:56
● 2026-04-04 07:56:20
● 2026-04-12 21:15:30

●MXmailin2.silentcomputer.cz2026-04-04 → 2026-04-12 · 3 obs

○ 2017-05-14 23:15:56
● 2026-04-04 07:56:20
● 2026-04-12 21:15:30

○MXmx.smtp.cz2015-05-19 → 2016-08-08 · 4 obs

● 2015-05-19 16:33:18
● 2016-08-08 14:51:24
○ 2017-05-14 23:15:56
○ 2026-04-12 21:15:30

○MXmx1.active24.com2017-05-14 → 2017-05-14 · 4 obs

○ 2016-08-08 14:51:24
● 2017-05-14 23:15:56
○ 2026-04-04 07:56:20
○ 2026-04-12 21:15:30

○MXmx2.active24.com2017-05-14 → 2017-05-14 · 4 obs

○ 2016-08-08 14:51:24
● 2017-05-14 23:15:56
○ 2026-04-04 07:56:20
○ 2026-04-12 21:15:30

●A2a00:4b40:aaaa:2005::72026-04-04 → 2026-04-12 · 3 obs

○ 2017-05-14 23:15:56
● 2026-04-04 07:56:20
● 2026-04-12 21:15:30

○A2a02:4a8:ac24:110::10:102015-05-19 → 2017-05-14 · 4 obs

● 2015-05-19 16:33:18
● 2017-05-14 23:15:56
○ 2026-04-04 07:56:20
○ 2026-04-12 21:15:30

○A31.15.10.102015-05-19 → 2017-05-14 · 4 obs

● 2015-05-19 16:33:18
● 2017-05-14 23:15:56
○ 2026-04-04 07:56:20
○ 2026-04-12 21:15:30

●A37.9.175.1642026-04-04 → 2026-04-12 · 3 obs

○ 2017-05-14 23:15:56
● 2026-04-04 07:56:20
● 2026-04-12 21:15:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	-
silentcomputer.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: 1109ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`37.9.175.164`
AAAA	1	`2a00:4b40:aaaa:2005::7`
NS	3	`ns1.websupport.cz, ns2.websupport.cz...`
MX	2	`mailin1.silentcomputer.cz (pri: 10), mailin2.silentcomputer.cz (pri: 100)`
SOA	1	`ns1.websupport.cz admin.websupport.cz`

Analysis

Hierarchy

silentcomputer.cz is parent of mail.silentcomputer.cz, mailin1.silentcomputer.cz and mailin2.silentcomputer.cz.

IP Addresses

silentcomputer.cz points to two IP numbers: 2a00:4b40:aaaa:2005::7 and 37.9.175.164.

Other host names, for instance profes.cz, mhmont.cz, migraciokutato.hu, gbso.nl and sportmax.sk share IP numbers with silentcomputer.cz.

Name Servers

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

silentcomputer.cz at least partially shares its name servers with other domains, for instance stravovaciservis.com, toldo.app, frolik.cz, gavrit.com and tattoo-supply.cz.

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.silentcomputer.cz and mailin2.silentcomputer.cz handle silentcomputer.cz.

Host names with two IP numbers: mailin1.silentcomputer.cz points to 2a00:4b40:aaaa:2101:45:13:137:8 and 45.13.137.9; mailin2.silentcomputer.cz points to 2a00:4b40:aaaa:2101:45:13:137:7 and 45.13.137.8

silentcomputer.cz - robtex.com