Robtex

Up: 90.155.128.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 90.155.192.0/19
Down right: 90.155.224.0/19
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
90.155.192.106	PTR	host106-192-155-90.butovo.com
90.155.192.168	PTR	host168-192-155-90.butovo.com
90.155.193.91	PTR	host91-193-155-90.butovo.com
90.155.193.204	PTR	host204-193-155-90.butovo.com
90.155.194.25	PTR	host25-194-155-90.butovo.com
90.155.194.45	PTR	host45-194-155-90.butovo.com
90.155.194.100	PTR	host100-194-155-90.butovo.com
90.155.194.102	PTR	host102-194-155-90.butovo.com
90.155.194.228	PTR	host228-194-155-90.butovo.com
90.155.195.238	PTR	host238-195-155-90.butovo.com
90.155.195.240	PTR	host240-195-155-90.butovo.com
90.155.195.245	PTR	host245-195-155-90.butovo.com
90.155.196.82	A	mp7778.ru
90.155.196.106	PTR	host106-196-155-90.butovo.com
90.155.196.164	PTR	host164-196-155-90.butovo.com
90.155.197.33	PTR	host33-197-155-90.butovo.com
90.155.198.140	PTR	host140-198-155-90.butovo.com
90.155.198.146	PTR	host146-198-155-90.butovo.com
90.155.199.233	A	mail.giraffe3d.com
90.155.200.82	PTR	host82-200-155-90.butovo.com
90.155.201.1	PTR	host1-201-155-90.butovo.com
90.155.202.105	PTR	host105-202-155-90.butovo.com
90.155.203.21	PTR	host21-203-155-90.butovo.com
90.155.203.109	PTR	host109-203-155-90.butovo.com
90.155.203.167	PTR	host167-203-155-90.butovo.com
90.155.203.202	PTR	host202-203-155-90.butovo.com
90.155.204.102	A	xn--80aaaof0bp4b.com
90.155.204.138	A	mail.talv.ru
90.155.204.153	PTR	host153-204-155-90.butovo.com
90.155.204.154	PTR	host154-204-155-90.butovo.com
90.155.204.225	PTR	host225-204-155-90.butovo.com
90.155.204.225	A	mail.buycentr.ru
90.155.204.225	A	sovetpsihologa.ru
90.155.204.240	PTR	host240-204-155-90.butovo.com
90.155.205.33	PTR	host33-205-155-90.butovo.com
90.155.205.38	PTR	host38-205-155-90.butovo.com
90.155.205.38	A	ns2.tm-sys.ru
90.155.205.38	A	ns2.lighthunters.ru
90.155.205.215	PTR	host215-205-155-90.butovo.com
90.155.206.18	PTR	host18-206-155-90.butovo.com
90.155.206.165	A	coderbroker.ru
90.155.207.117	PTR	host117-207-155-90.butovo.com
90.155.207.175	PTR	host175-207-155-90.butovo.com
90.155.208.16	PTR	host16-208-155-90.butovo.com
90.155.208.66	PTR	host66-208-155-90.butovo.com
90.155.208.83	PTR	host83-208-155-90.butovo.com
90.155.208.133	A	zimin.pw
90.155.208.133	A	neit.su
90.155.208.145	PTR	host145-208-155-90.butovo.com
90.155.208.241	PTR	host241-208-155-90.butovo.com
90.155.209.129	PTR	host129-209-155-90.butovo.com
90.155.209.194	A	ebutovo.com
90.155.209.194	A	opt.ebutovo.com
90.155.210.25	PTR	host25-210-155-90.butovo.com
90.155.210.163	PTR	host163-210-155-90.butovo.com
90.155.211.129	PTR	host129-211-155-90.butovo.com
90.155.212.114	PTR	host114-212-155-90.butovo.com
90.155.212.152	PTR	host152-212-155-90.butovo.com
90.155.213.135	PTR	host135-213-155-90.butovo.com
90.155.213.201	PTR	host201-213-155-90.butovo.com
90.155.216.5	PTR	host5-216-155-90.butovo.com
90.155.216.203	PTR	host203-216-155-90.butovo.com
90.155.217.51	PTR	host51-217-155-90.butovo.com
90.155.217.255	PTR	bcast-217-155-90.butovo.com
90.155.220.20	PTR	host20-220-155-90.butovo.com
90.155.220.52	PTR	host52-220-155-90.butovo.com
90.155.220.148	PTR	host148-220-155-90.butovo.com
90.155.220.148	A	ns1.economizer.ru
90.155.220.148	A	economizer.ru
90.155.220.151	PTR	host151-220-155-90.butovo.com
90.155.221.133	PTR	host133-221-155-90.butovo.com
90.155.221.228	PTR	host228-221-155-90.butovo.com
90.155.222.188	PTR	host188-222-155-90.butovo.com
90.155.222.194	PTR	host194-222-155-90.butovo.com
90.155.223.83	PTR	host83-223-155-90.butovo.com
90.155.223.238	PTR	host238-223-155-90.butovo.com
90.155.223.238	A	vidnoe.butovo.com
90.155.223.255	PTR	bcast-223-155-90.butovo.com
90.155.226.72	PTR	host72-226-155-90.butovo.com
90.155.226.104	PTR	host104-226-155-90.butovo.com
90.155.226.164	PTR	host164-226-155-90.butovo.com
90.155.226.198	PTR	host198-226-155-90.butovo.com
90.155.228.74	PTR	host74-228-155-90.butovo.com
90.155.229.42	PTR	host42-229-155-90.butovo.com
90.155.229.67	PTR	host67-229-155-90.butovo.com
90.155.229.199	PTR	host199-229-155-90.butovo.com
90.155.230.45	PTR	host45-230-155-90.butovo.com
90.155.230.45	A	malogulko.ru
90.155.231.47	PTR	host47-231-155-90.butovo.com
90.155.232.48	PTR	host48-232-155-90.butovo.com
90.155.233.121	PTR	host121-233-155-90.butovo.com
90.155.235.81	PTR	host81-235-155-90.butovo.com
90.155.235.81	A	beastie.ru
90.155.235.81	A	metacomputer.ru
90.155.235.102	PTR	host102-235-155-90.butovo.com
90.155.237.72	PTR	host72-237-155-90.butovo.com
90.155.237.78	PTR	host78-237-155-90.butovo.com
90.155.239.170	A	udp.su
90.155.239.170	A	www.udp.su
90.155.239.170	A	mail.udp.su
90.155.240.231	PTR	eth0.org.ru
90.155.244.179	A	6cba0601273d.sn.mynetname.net
90.155.245.102	PTR	host102-245-155-90.butovo.com
90.155.245.193	PTR	host193-245-155-90.butovo.com
90.155.245.205	PTR	host205-245-155-90.butovo.com
90.155.248.176	PTR	host176-248-155-90.butovo.com
90.155.249.195	PTR	host195-249-155-90.butovo.com
90.155.249.209	PTR	host209-249-155-90.butovo.com
90.155.251.50	PTR	host50-251-155-90.butovo.com
90.155.251.50	A	icefaces.ru
90.155.253.43	PTR	host43-253-155-90.butovo.com
90.155.253.87	PTR	host87-253-155-90.butovo.com
90.155.253.102	PTR	host102-253-155-90.butovo.com
90.155.253.204	PTR	host204-253-155-90.butovo.com
90.155.254.130	PTR	host130-254-155-90.butovo.com
90.155.255.4	PTR	host4-255-155-90.butovo.com
90.155.255.9	PTR	host9-255-155-90.butovo.com
90.155.255.10	PTR	host10-255-155-90.butovo.com
90.155.255.117	PTR	host117-255-155-90.butovo.com
90.155.255.255	PTR	bcast-255-155-90.butovo.com