Robtex

Up: 77.72.224.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 77.72.232.0/22
Down right: 77.72.236.0/22

IP	Type	Hostname
77.72.236.6	PTR	mail2.crisisgroup.org
77.72.236.6	A	mail2.icg.org
77.72.236.244	PTR	mail.adsl.toledo.be
77.72.236.244	PTR	webmail.adsl.toledo.be
77.72.236.245	PTR	mx.adsl.toledo.be
77.72.237.65	PTR	asr.intx.as20650.net
77.72.237.68	A+PTR	dns.intx.as20650.net
77.72.237.90	A	ipnexia.biz
77.72.237.98	A	mx0.ixbru.ipnexia.com
77.72.237.168	PTR	77-72-237-168.as20650.net
77.72.237.170	A+PTR	mx2.polbruno.be
77.72.237.170	A	www.polbruno.be
77.72.237.195	A+PTR	mail01.trevi.be
77.72.237.196	A+PTR	mail02.trevi.be
77.72.238.32	PTR	77.72.238.32.as20650.net
77.72.238.35	PTR	77.72.238.35.as20650.net
77.72.238.36	PTR	77.72.238.36.as20650.net
77.72.238.39	PTR	77.72.238.39.as20650.net
77.72.238.40	PTR	77.72.238.40.as20650.net
77.72.238.43	PTR	77.72.238.43.as20650.net
77.72.238.44	PTR	77.72.238.44.as20650.net
77.72.238.47	PTR	77.72.238.47.as20650.net
77.72.238.48	PTR	77.72.238.48.as20650.net
77.72.238.63	PTR	77.72.238.63.as20650.net
77.72.238.64	PTR	77.72.238.64.as20650.net
77.72.238.71	PTR	77.72.238.71.as20650.net
77.72.238.72	PTR	77.72.238.72.as20650.net
77.72.238.75	PTR	77.72.238.75.as20650.net
77.72.238.76	PTR	77.72.238.76.as20650.net
77.72.238.130	A+PTR	mailgw2.hvdb.com
77.72.238.255	PTR	77.72.238.255.as20650.net