Robtex

Up: 77.73.82.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 77.73.83.0/25
Down right: 77.73.83.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
77.73.83.0	PTR	host0.83.icmnetsystems.com
77.73.83.1	PTR	host1.83.icmnetsystems.com
77.73.83.2	PTR	host2.83.icmnetsystems.com
77.73.83.3	PTR	host3.83.icmnetsystems.com
77.73.83.4	PTR	host4.83.icmnetsystems.com
77.73.83.5	PTR	host5.83.icmnetsystems.com
77.73.83.6	A+PTR	host6.83.icmnetsystems.com
77.73.83.7	PTR	host7.83.icmnetsystems.com
77.73.83.8	PTR	host8.83.icmnetsystems.com
77.73.83.8	A	dreivip.com
77.73.83.8	A	dreivip.net
77.73.83.9	PTR	host9.83.icmnetsystems.com
77.73.83.10	PTR	host10.83.icmnetsystems.com
77.73.83.11	PTR	host11.83.icmnetsystems.com
77.73.83.12	A+PTR	host12.83.icmnetsystems.com
77.73.83.13	A+PTR	host13.83.icmnetsystems.com
77.73.83.14	PTR	host14.83.icmnetsystems.com
77.73.83.15	A+PTR	host15.83.icmnetsystems.com
77.73.83.16	PTR	host16.83.icmnetsystems.com
77.73.83.17	PTR	host17.83.icmnetsystems.com
77.73.83.18	PTR	host18.83.icmnetsystems.com
77.73.83.19	A+PTR	host19.83.icmnetsystems.com
77.73.83.23	PTR	host23.83.icmnetsystems.com
77.73.83.25	A+PTR	host25.83.icmnetsystems.com
77.73.83.26	PTR	host26.83.icmnetsystems.com
77.73.83.29	PTR	host29.83.icmnetsystems.com
77.73.83.36	PTR	host36.83.icmnetsystems.com
77.73.83.44	PTR	host44.83.icmnetsystems.com
77.73.83.47	A+PTR	host47.83.icmnetsystems.com
77.73.83.49	PTR	host49.83.icmnetsystems.com
77.73.83.51	PTR	host51.83.icmnetsystems.com
77.73.83.71	A	efesdance.euroleague.net
77.73.83.71	A	7days.euroleague.net
77.73.83.72	PTR	host72.83.icmnetsystems.com
77.73.83.72	A	racan.net
77.73.83.72	A	hotelclaris.com
77.73.83.75	PTR	host75.83.icmnetsystems.com
77.73.83.75	A	mail.nubeprivada.es
77.73.83.79	PTR	host79.83.icmnetsystems.com
77.73.83.79	A	web01.puntojs.icm.es
77.73.83.82	A+PTR	host82.83.icmnetsystems.com
77.73.83.82	A	powerofseductionsync.com
77.73.83.82	A	unoiimedia.com
77.73.83.83	PTR	host83.83.icmnetsystems.com
77.73.83.83	A	thesecret.epocacosmeticos.com.br
77.73.83.83	A	server.borges.es
77.73.83.84	PTR	host84.83.icmnetsystems.com
77.73.83.84	A	popitas.com
77.73.83.84	A	agrofruse.com
77.73.83.85	PTR	host85.83.icmnetsystems.com
77.73.83.85	A	beatyourmark.es
77.73.83.85	A	www.cervezasalhambra.com
77.73.83.86	PTR	host86.83.icmnetsystems.com
77.73.83.86	A	pronokalweightloss.co.uk
77.73.83.86	A	comprometidosporunpesosaludable.com
77.73.83.88	PTR	host88.83.icmnetsystems.com
77.73.83.88	A	borgesprofessional.com
77.73.83.88	A	borgessolnatur.es
77.73.83.89	A	mail02-node01.icm.es
77.73.83.90	PTR	plesk01.puntojs.icm.es
77.73.83.90	A	web01.puntojs.icm.es
77.73.83.90	A	educamundohuelva.es
77.73.83.94	PTR	host94.83.icmnetsystems.com
77.73.83.102	PTR	host102.83.icmnetsystems.com
77.73.83.102	A	www.tostadora.com
77.73.83.102	A	latostadora.com
77.73.83.104	PTR	host104.83.icmnetsystems.com
77.73.83.104	A	id.euroleague.net
77.73.83.104	A	mediacentre.euroleague.net
77.73.83.106	PTR	host106.83.icmnetsystems.com
77.73.83.106	A	ecoembesdudasreciclaje.es
77.73.83.106	A	amarilloverdeyazul.com
77.73.83.109	PTR	host109.83.icmnetsystems.com
77.73.83.161	PTR	host161.83.icmnetsystems.com
77.73.83.191	PTR	host191.83.icmnetsystems.com
77.73.83.215	PTR	host215.83.icmnetsystems.com
77.73.83.224	A+PTR	host224.83.icmnetsystems.com
77.73.83.225	PTR	host225.83.icmnetsystems.com
77.73.83.232	PTR	host232.83.icmnetsystems.com
77.73.83.238	PTR	host238.83.icmnetsystems.com
77.73.83.241	PTR	host241.83.icmnetsystems.com
77.73.83.243	PTR	host243.83.icmnetsystems.com
77.73.83.249	PTR	host249.83.icmnetsystems.com
77.73.83.255	PTR	host255.83.icmnetsystems.com