mail.opensolution.cz - dns.ninja

`mail.opensolution.cz`

CNAME	`gw.opensolution.cz`
DNSSEC	⚠️ Not signed
A	176.222.229.32^{🇨🇿 cablenet176.222.224.0/21 Cable-NET}
		PTR	`gw.opensolution.cz`

`opensolution.cz`

	DNSSEC	⚠️ Not signed
	A	31.15.10.13^{🇨🇿 ACTIVE24-AS31.15.8.0/21 CZ-ACTIVE24-NET2}
	NS	`alfa.ns.active24.cz` ⭐
	NS	`beta.ns.active24.cz`
	NS	`gama.ns.active24.sk`
	MX	`mx1.active24.com` ⭐
	MX	`mx2.active24.com`⁽²⁰⁾
	TXT	`MS=ms46436661`
	TXT	`v=spf1 include:spf.active24.com ~all`
	TXT	`MS=946CA0F637F5CF9F1EC27354CBB992BBC5D3B2EE`
	TXT	`google-site-verification=PWz9RGUvZjq4dv5fx6bHDbSm70QlcMS9EGtljjiofFw`
	SOA	`alfa.ns.active24.cz`hostmaster@active24.cz 2026-05-12 #1

Previously MX for

opensolution.cz

Same first word

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DNS History

3 records (1 active, 2 former)

○A176.222.229.322015-07-04 → 2017-01-09 · 5 obs

○ 2008-07-17 19:15:16
● 2015-07-04 12:18:50
● 2017-01-09 02:12:54
○ 2026-07-25 07:58:28
○ 2026-07-25 07:58:30

○A77.104.215.2502008-07-17 → 2008-07-17 · 3 obs

● 2008-07-17 19:15:16
○ 2015-07-04 12:18:50
○ 2026-07-25 07:58:30

●CNAMEgw.opensolution.cz2008-07-17 → 2026-07-25 · 2 obs

● 2008-07-17 19:15:16
● 2026-07-25 07:58:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	-
opensolution.cz	alfa.ns.active24.cz, beta.ns.active24.cz, gama.ns.active24.sk	4 records

✅ Authoritative Response

Server:185.71.158.30

NS records: alfa.ns.active24.cz, beta.ns.active24.cz, gama.ns.active24.sk

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1392ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`gw.opensolution.cz`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (alfa.ns.active24.cz, beta.ns.active24.cz, alfa.ns.active24.cz...)

Analysis

IP Addresses

mail.opensolution.cz resolves to one IP address: 176.222.229.32.

Further host names like gw.opensolution.cz and sbfkladno.cz overlap in IP numbers with mail.opensolution.cz.