DNSWHOIS.INFO - smtpm21.o2.cz

Search for IP or hostnames:

smtpm21.o2.cz checked at 2025-11-15T10:55:28.826Z 272ms 35/35/35 100% R:22 allDone:true timedOut:false

`smtpm21.o2.cz`

	A	160.218.161.71^{🇨🇿 O2-CZECH-REPUBLIC}
			PTR	`smtpm21.o2.cz`

`o2.cz`

	NS	`dns.iol.cz`
	MX	`smtp-in.o2.cz`
	NS	`ns2.tel.cz`
	A	2001:41d8:1:742:2::2 ^{🇨🇿 O2-CZECH-REPUBLIC}
	A	160.218.161.162^{🇨🇿 O2-CZECH-REPUBLIC}

rank #38886 globally
rank #98 in the tld
This domain "o2.cz" appears to be owned by O2, which is a telecommunications company. The ".cz" indicates that the website is based in or has connections to the Czech Republic. The company provides services such as mobile communications, fixed-line communications, and internet services.

PTR for

71.161.218.160.in-addr.arpa

MX for

cesky-telecom.cz

czech-telecom.cz

ct.cz

AI analysis

smtpm21.o2.cz serves as a mail server for cesky-telecom.cz, czech-telecom.cz and ct.cz.

smtpm22.o2.cz is commonly used as a mail server with smtpm21.o2.cz.

smtpm21.o2.cz resolves to a single IP address: 160.218.161.71.

Other host names, for instance smtpm21.cz.o2.com, share IP numbers with smtpm21.o2.cz.

dbq