Robtex

Up: 213.222.200.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 213.222.201.0/25
Down right: 213.222.201.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
213.222.201.16	A	ocsp.ha.certum.pl
213.222.201.96	A	clide.icas.certum.pl
213.222.201.96	A	clide.ba.icas.certum.pl
213.222.201.96	A	clide.certum.pl
213.222.201.98	A+PTR	pri.mx.certum.pl
213.222.201.98	A	smtp.ng.certum.pl
213.222.201.116	A	ns1.certum.eu
213.222.201.116	A	ns1.ocsp-certum.com
213.222.201.116	A	ns1.spacessl.com
213.222.201.118	A	ocsp.icas.certum.pl
213.222.201.119	A	ocsp.icas.certum.pl
213.222.201.120	A	ocsp.icas.certum.pl
213.222.201.126	A	ns1.certum.pl
213.222.201.141	A	www.certum.ru.alias.certum.pl
213.222.201.142	A	giftoftheredenvelope.com
213.222.201.142	A	www.certum.eu.alias.certum.pl
213.222.201.146	A	www.certyfikat.pl.alias.certum.pl
213.222.201.147	A	www.certum.pl
213.222.201.147	A	certum.pl
213.222.201.149	A+PTR	scep.certum.pl
213.222.201.149	A	certum.pl
213.222.201.150	A	ipbl4.on2it.info
213.222.201.169	A	seal.certum.pl
213.222.201.169	A	seal.ba.certum.pl
213.222.201.171	A	zamowienie.certum.pl
213.222.201.171	A	crl.spacessl.com.alias.certum.pl
213.222.201.178	A	tech.certum.pl
213.222.201.212	A	timestamping.certum.pl
213.222.201.212	A	cts.ha.certum.pl
213.222.201.213	A	wosign.repository.certum.eu
213.222.201.213	A	wosign.repository.certum.eu.alias.certum.pl
213.222.201.214	A	repository.ha.certum.pl
213.222.201.254	A+PTR	smtp.it.certum.pl
213.222.201.254	A	mx.it.certum.pl