`okmailing.cz`

DNSSEC	⚠️ Not signed
NS	`ns2.oksystem.cz` ⭐
		A	2001:4de8:f006::20^{🇨🇿 QUANTCOM-AS2001:4de8::/32 Dial Telecom, a.s.}
		A	193.222.130.169^{🇨🇿 QUANTCOM-AS193.222.130.0/24 OKSYSTEM-NET}
			PTR	`ns2.oksystem.cz`
NS	`ns.oksystem.cz`
		A	2001:4de8:f006::10^{🇨🇿 QUANTCOM-AS2001:4de8::/32 Dial Telecom, a.s.}
		A	193.222.130.1^{🇨🇿 QUANTCOM-AS193.222.130.0/24 OKSYSTEM-NET}
			PTR	`ns.oksystem.cz`
NS	`ns3.oksystem.cz`
		A	2a07:9444:1100:402::10^{🇨🇿 geetoo-cz2a07:9444::/32}
		A	185.155.131.79^{🇨🇿 geetoo-cz185.155.131.0/24}
			PTR	`mail.cloud.okbase.cz`
TXT	`v=spf1 a mx ip4:193.222.130.159 ~all`
SOA	`ns.oksystem.cz`info@oksystem.cz 2016-02-19 #37

`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=1786627044

Same first word

okmailing.cz

Similar names

gklinmiao.com

oilmaking.com

kingomail.com

DNS History

5 records (3 active, 2 former)

●NSns.oksystem.cz2018-05-11 → 2026-08-13 · 2 obs

● 2018-05-11 04:15:18
● 2026-08-13 13:39:28

●NSns2.oksystem.cz2018-05-11 → 2026-08-13 · 2 obs

● 2018-05-11 04:15:18
● 2026-08-13 13:39:28

●NSns3.oksystem.cz2026-03-30 → 2026-08-13 · 3 obs

○ 2018-05-11 04:15:18
● 2026-03-30 04:04:02
● 2026-08-13 13:39:28

○MXmail.okmailing.cz2018-05-11 → 2018-05-11 · 3 obs

● 2018-05-11 04:15:18
○ 2026-03-30 04:04:02
○ 2026-08-13 13:39:28

○A193.222.130.1592018-05-11 → 2018-05-11 · 3 obs

● 2018-05-11 04:15:18
○ 2026-03-30 04:04:02
○ 2026-08-13 13:39:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, d.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz	-
okmailing.cz	ns.oksystem.cz, ns2.oksystem.cz, ns3.oksystem.cz	6 records

✅ Authoritative Response

Server:193.222.130.1

NS records: ns.oksystem.cz, ns2.oksystem.cz, ns3.oksystem.cz

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for okmailing.cz (unsigned zone)

⏱️ Timing

Total: 864ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	3	`ns.oksystem.cz, ns3.oksystem.cz...`
TXT	1	`v=spf1 a mx ip4:193.222.130.159 ~all`
SOA	1	`ns.oksystem.cz info.oksystem.cz`

📌 Glue Records Collected

Total: 6

Out-of-bailiwick: 6 (ns.oksystem.cz, ns2.oksystem.cz, ns3.oksystem.cz...)

Analysis

Name Servers

okmailing.cz is delegated to three name servers: ns2.oksystem.cz, ns3.oksystem.cz and ns.oksystem.cz.

okmailing.cz has at least partial name server overlap with other domains, such as okbase.cz, okhack.cz, oksystem.it and two others.

ns2.oksystem.cz, ns3.oksystem.cz and ns.oksystem.cz each resolve to two IP addresses: ns2.oksystem.cz resolves to 193.222.130.169 and 2001:4de8:f006::20; ns3.oksystem.cz resolves to 185.155.131.79 and 2a07:9444:1100:402::10; ns.oksystem.cz resolves to 193.222.130.1 and 2001:4de8:f006::10.

okmailing.cz - robtex.com

okmailing.cz

cz