`retroraj.cz`

DNSSEC	🔒 Signed (DS record present)
A	2a00:4b40:aaaa:2011::6^{🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32}
A	37.9.175.211^{🇸🇰 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.retroraj.cz` ⭐
		A	2a00:4b40:aaaa:2101:45:13:137:109^{🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32}
			PTR	`mx20.websupport.sk`
		A	45.13.137.9^{🇸🇰 WEBSUPPORT-SRO-SK-AS45.13.137.0/24}
			PTR	`m1-u7-mx.websupport.sk`
MX	`mailin2.retroraj.cz`⁽¹⁰⁰⁾
		A	2a00:4b40:aaaa:2101:45:13:137:8^{🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32}
			PTR	`m1-u6-mx.websupport.sk`
		A	45.13.137.7^{🇸🇰 WEBSUPPORT-SRO-SK-AS45.13.137.0/24}
			PTR	`mx10.websupport.at`
TXT	`v=spf1 include:spf.active24.com ~all`
SOA	`ns1.websupport.cz`admin@websupport.cz serial=1776198401

`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=1777078034

Subdomains

www.retroraj.cz

Same first word

retroraj.cz

DNS History

14 records (7 active, 7 former)

○NSns.banan.cz2018-02-01 → 2018-02-01 · 2 obs

● 2018-02-01 01:54:16
○ 2026-04-25 01:19:48

●NSns1.websupport.cz2026-04-25 → 2026-04-25 · 2 obs

○ 2018-02-01 01:54:16
● 2026-04-25 01:19:48

○NSns2.banan.cz2018-02-01 → 2018-02-01 · 2 obs

● 2018-02-01 01:54:16
○ 2026-04-25 01:19:48

●NSns2.websupport.cz2026-04-25 → 2026-04-25 · 2 obs

○ 2018-02-01 01:54:16
● 2026-04-25 01:19:48

○NSns3.e-baan.net2018-02-01 → 2018-02-01 · 2 obs

● 2018-02-01 01:54:16
○ 2026-04-25 01:19:48

●NSns3.websupport.eu2026-04-25 → 2026-04-25 · 2 obs

○ 2018-02-01 01:54:16
● 2026-04-25 01:19:48

○MXbackup.p.banan.cz2018-02-01 → 2018-02-01 · 2 obs

● 2018-02-01 01:54:16
○ 2026-04-25 01:19:48

●MXmailin1.retroraj.cz2026-04-25 → 2026-04-25 · 2 obs

○ 2018-02-01 01:54:16
● 2026-04-25 01:19:48

●MXmailin2.retroraj.cz2026-04-25 → 2026-04-25 · 2 obs

○ 2018-02-01 01:54:16
● 2026-04-25 01:19:48

○MXp.banan.cz2018-02-01 → 2018-02-01 · 2 obs

● 2018-02-01 01:54:16
○ 2026-04-25 01:19:48

●A2a00:4b40:aaaa:2011::62026-04-25 → 2026-04-25 · 2 obs

○ 2018-02-01 01:54:16
● 2026-04-25 01:19:48

○A2a01:430:1a::2412018-02-01 → 2018-02-01 · 2 obs

● 2018-02-01 01:54:16
○ 2026-04-25 01:19:48

●A37.9.175.2112026-04-25 → 2026-04-25 · 2 obs

○ 2018-02-01 01:54:16
● 2026-04-25 01:19:48

○A77.93.211.2412018-02-01 → 2018-02-01 · 2 obs

● 2018-02-01 01:54:16
○ 2026-04-25 01:19:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	d.ns.nic.cz, c.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz	-
retroraj.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: 929ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`37.9.175.211`
AAAA	1	`2a00:4b40:aaaa:2011::6`
NS	3	`ns1.websupport.cz, ns2.websupport.cz...`
MX	2	`mailin1.retroraj.cz (pri: 10), mailin2.retroraj.cz (pri: 100)`
TXT	1	`v=spf1 include:spf.active24.com ~all`
SOA	1	`ns1.websupport.cz admin.websupport.cz`

Analysis

Hierarchy

retroraj.cz is the parent of www.retroraj.cz.

IP Addresses

retroraj.cz resolves to two IPs: 2a00:4b40:aaaa:2011::6 and 37.9.175.211.

other host names for instance johann-hochreiter.cz, www.polfin.cz, lipoelastic.se, chatchat.cz and www.hifi-voice.com share IP numbers with retroraj.cz.

Name Servers

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

retroraj.cz at least partially shares name servers with other domains, for instance bednarova.net, beertasting.cz, spoito.com, marekrosa.org and rekluse.cz.