Robtex

Up: 31.15.64.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 31.15.80.0/21
Down right: 31.15.88.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
31.15.80.0	PTR	31-15-80-0.broadband.progtech-yug.ru
31.15.80.243	PTR	unspecified.progtech-yug.ru
31.15.81.91	A	pzzc.ru
31.15.81.176	PTR	unspecified.progtech-yug.ru
31.15.82.51	PTR	31-15-82-51.broadband.progtech-yug.ru
31.15.82.227	PTR	31-15-82-227.broadband.progtech-yug.ru
31.15.83.211	PTR	unspecified.progtech-yug.ru
31.15.84.0	PTR	31-15-84-0.broadband.progtech.ru
31.15.84.66	PTR	31-15-84-66.broadband.progtech-yug.ru
31.15.84.176	PTR	31-15-84-176.broadband.progtech.ru
31.15.85.49	PTR	31-15-85-49.broadband.progtech.ru
31.15.85.50	PTR	31-15-85-50.broadband.progtech.ru
31.15.85.64	PTR	31-15-85-64.broadband.progtech.ru
31.15.86.0	PTR	31-15-86-0.broadband.progtech.ru
31.15.87.51	PTR	31-15-87-51.broadband.progtech.ru
31.15.88.0	PTR	unspecified.progtech-yug.ru
31.15.88.2	A+PTR	ns0.progtech-yug.ru
31.15.88.3	A+PTR	ns1.progtech-yug.ru
31.15.88.4	A	mail.progtech-yug.ru
31.15.88.6	A	www.progtech-yug.ru
31.15.88.15	A	anport.ru
31.15.88.16	A	mail.anport.ru
31.15.88.18	A	www.progtech-yug.ru
31.15.88.18	A	anport.ru
31.15.88.18	A	www.anport.ru
31.15.88.35	PTR	31-15-88-35.broadband.progtech-yug.ru
31.15.88.134	A	www.gbanapa.ru
31.15.88.134	A	alter-net.me
31.15.88.134	A	www.alter-net.me
31.15.88.139	A	flyanapa.ru
31.15.88.246	A	www.alter-online.ru
31.15.88.246	A	alter-online.ru
31.15.89.19	PTR	unspecified.progtech-yug.ru
31.15.89.19	A	flyanapa.ru
31.15.89.34	PTR	unspecified.progtech-yug.ru
31.15.89.51	PTR	31-15-89-51.broadband.progtech-yug.ru
31.15.89.83	PTR	31-15-89-83.broadband.progtech-yug.ru
31.15.90.97	PTR	unspecified.progtech-yug.ru
31.15.90.112	PTR	31-15-90-112.broadband.progtech-yug.ru
31.15.90.146	PTR	unspecified.progtech-yug.ru
31.15.90.178	PTR	31-15-90-178.broadband.progtech-yug.ru
31.15.90.211	PTR	unspecified.progtech-yug.ru
31.15.91.178	PTR	unspecified.progtech-yug.ru
31.15.92.113	PTR	unspecified.progtech-yug.ru
31.15.92.209	PTR	31-15-92-209.broadband.progtech-yug.ru
31.15.93.81	PTR	unspecified.progtech-yug.ru
31.15.95.35	PTR	unspecified.progtech-yug.ru
31.15.95.192	PTR	unspecified.progtech-yug.ru
31.15.95.209	PTR	31-15-95-209.broadband.progtech-yug.ru