Robtex

Up: 166.210.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 166.210.0.0/17
Down right: 166.210.128.0/17
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
166.210.0.0	PTR	movil-166-210-0-0.claro.com.co
166.210.0.8	PTR	movil-166-210-0-8.claro.com.co
166.210.0.11	PTR	movil-166-210-0-11.claro.com.co
166.210.0.14	PTR	movil-166-210-0-14.claro.com.co
166.210.2.1	PTR	movil-166-210-2-1.claro.com.co
166.210.6.0	PTR	movil-166-210-6-0.claro.com.co
166.210.15.6	PTR	movil-166-210-15-6.claro.com.co
166.210.19.4	PTR	movil-166-210-19-4.claro.com.co
166.210.20.6	PTR	movil-166-210-20-6.claro.com.co
166.210.32.1	PTR	comcel.com.co
166.210.32.44	A+PTR	recargaenlinea.comcel.com.co
166.210.32.162	A	atiendo.claro.com.co
166.210.32.168	A	explora.claro.com.co
166.210.32.170	A	miclaroempresas.claro.com.co
166.210.116.5	PTR	movil-166-210-116-5.claro.com.co
166.210.117.4	PTR	movil-166-210-117-4.claro.com.co
166.210.120.3	PTR	movil-166-210-120-3.claro.com.co
166.210.124.9	PTR	movil-166-210-124-9.claro.com.co
166.210.127.1	PTR	movil-166-210-127-1.claro.com.co
166.210.183.5	PTR	movil-166-210-183-5.claro.com.co
166.210.183.8	PTR	movil-166-210-183-8.claro.com.co
166.210.214.1	PTR	unassigned.cell
166.210.224.45	A	antispam-2-sms.comcel.com
166.210.224.135	A	clarotedamas.claro.com.co
166.210.224.135	A	miclaro.com.co
166.210.224.138	A	sip.comcel.com.co
166.210.227.66	A+PTR	rbt.ideascomcel.com
166.210.227.66	A+PTR	ringbacktones.ideascomcel.com
166.210.227.66	A+PTR	rbt.ideascomcel.com.co