Robtex

Up: 149.255.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 149.255.24.0/22
Down right: 149.255.28.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
149.255.24.84	PTR	mail.sspi.ru
149.255.24.84	A	www.sspi.ru
149.255.24.84	A	sspi.ru
149.255.24.150	PTR	ip-149.255.24.150.zelenaya.net
149.255.24.153	PTR	ip-149.255.24.153.zelenaya.net
149.255.24.156	PTR	ip-149.255.24.156.zelenaya.net
149.255.24.156	A	ns3.xperts.ru
149.255.24.184	A	rsp23.com
149.255.24.184	A	sanstroy.com
149.255.24.254	PTR	ip-149.255.24.254.zelenaya.net
149.255.25.14	PTR	ip-149.255.25.14.zelenaya.net
149.255.25.26	PTR	ip-149.255.25.26.zelenaya.net
149.255.25.30	A	srvadm.stavipoteka.com
149.255.25.34	A+PTR	uodms.stavmirsud.ru
149.255.25.34	A	ns2.stavmirsud.ru
149.255.25.34	A	mx.uodms.stavmirsud.ru
149.255.25.61	PTR	ip-149.255.25.61.zelenaya.net
149.255.25.94	PTR	ip-149.255.25.94.zelenaya.net
149.255.25.96	PTR	ip-149.255.25.96.zelenaya.net
149.255.25.152	PTR	ip-149.255.25.152.zelenaya.net
149.255.25.175	PTR	ip-149.255.25.175.zelenaya.net
149.255.25.201	PTR	ip-149.255.25.201.zelenaya.net
149.255.25.203	PTR	ip-149.255.25.203.zelenaya.net
149.255.25.203	A	stavr.bolshoy.ru
149.255.25.208	PTR	ip-149.255.25.208.zelenaya.net
149.255.25.219	PTR	ip-149.255.25.219.zelenaya.net
149.255.25.225	PTR	ip-149.255.25.225.zelenaya.net
149.255.25.248	A+PTR	mail.ecotermo.ru
149.255.25.248	A	www.ecotermo.ru
149.255.25.248	A	ecotermo.ru
149.255.26.66	PTR	ip-149.255.26.66.zelenaya.net
149.255.26.66	A	moodle.srkc.ru
149.255.26.69	PTR	ip-149.255.26.69.zelenaya.net
149.255.26.69	A	test1.stavrcoi.ru
149.255.26.69	A	www.stavrcoi.ru
149.255.26.122	A	mail.nevadm.ru
149.255.27.34	PTR	ip-149.255.27.34.zelenaya.net
149.255.27.34	A	water26.ru
149.255.27.34	A	www.water26.ru
149.255.27.70	PTR	ip-149.255.27.70.zelenaya.net
149.255.27.255	PTR	ip-149.255.27.255.zelenaya.net
149.255.28.2	PTR	ip-149.255.28.2.zelenaya.net
149.255.28.25	PTR	ip-149.255.28.25.zelenaya.net
149.255.28.30	A	mail.bitservice26.ru
149.255.28.30	A	mail.atika26.ru
149.255.28.30	A	xn--26-6kca3bm8c.xn--p1ai
149.255.28.32	PTR	ip-149.255.28.32.zelenaya.net
149.255.28.35	PTR	ip-149.255.28.35.zelenaya.net
149.255.28.43	PTR	ip-149.255.28.43.zelenaya.net
149.255.28.49	PTR	ip-149.255.28.49.zelenaya.net
149.255.28.50	PTR	ip-149.255.28.50.zelenaya.net
149.255.28.66	PTR	ip-149.255.28.66.zelenaya.net
149.255.28.73	PTR	ip-149.255.28.73.zelenaya.net
149.255.28.90	PTR	ip-149.255.28.90.zelenaya.net
149.255.28.91	PTR	ip-149.255.28.91.zelenaya.net
149.255.28.99	PTR	ip-149.255.28.99.zelenaya.net
149.255.28.113	PTR	ip-149.255.28.113.zelenaya.net
149.255.28.122	PTR	ip-149.255.28.122.zelenaya.net
149.255.28.123	PTR	ip-149.255.28.123.zelenaya.net
149.255.28.146	PTR	ip-149.255.28.146.zelenaya.net
149.255.28.147	PTR	ip-149.255.28.147.zelenaya.net
149.255.28.152	PTR	ip-149.255.28.152.zelenaya.net
149.255.28.153	PTR	ip-149.255.28.153.zelenaya.net
149.255.28.155	PTR	ip-149.255.28.155.zelenaya.net
149.255.28.162	PTR	ip-149.255.28.162.zelenaya.net
149.255.28.178	PTR	ip-149.255.28.178.zelenaya.net
149.255.28.187	PTR	ip-149.255.28.187.zelenaya.net
149.255.28.200	PTR	ip-149.255.28.200.zelenaya.net
149.255.28.201	PTR	ip-149.255.28.201.zelenaya.net
149.255.28.202	PTR	ip-149.255.28.202.zelenaya.net
149.255.28.208	PTR	ip-149.255.28.208.zelenaya.net
149.255.28.211	PTR	ip-149.255.28.211.zelenaya.net
149.255.28.234	PTR	ip-149.255.28.234.zelenaya.net
149.255.28.235	PTR	ip-149.255.28.235.zelenaya.net
149.255.28.242	PTR	ip-149.255.28.242.zelenaya.net
149.255.28.243	PTR	ip-149.255.28.243.zelenaya.net
149.255.29.14	PTR	irrico.ru
149.255.29.18	PTR	ip-149.255.29.18.zelenaya.net
149.255.29.46	PTR	server.iteasy.pro
149.255.29.46	A	iteasy.pro
149.255.29.216	PTR	ip-149.255.29.216.zelenaya.net
149.255.29.216	A	mail.svetokontrast.ru
149.255.29.216	A	gulevskiy.pro
149.255.29.255	PTR	ip-149.255.29.255.zelenaya.net
149.255.30.106	A+PTR	mail2.asbgrain.com
149.255.30.106	A	ns2.asbgrain.com
149.255.30.110	A	ns2.fes-agro.ru
149.255.30.110	A	mail2.fes-agro.ru
149.255.30.150	PTR	ip-149.255.30.150.zelenaya.net
149.255.30.150	A	mail-server.luckyjam.ru
149.255.30.199	PTR	ip-149.255.30.199.zelenaya.net
149.255.30.249	A+PTR	alkor-reklama.ru
149.255.30.249	A	mail.alkor-reklama.ru
149.255.30.255	PTR	ip-149.255.30.255.zelenaya.net
149.255.31.62	PTR	ip-149.255.31.62.zelenaya.net
149.255.31.131	A	mail.stser.ru
149.255.31.232	PTR	ip-149.255.31.232.zelenaya.net
149.255.31.255	PTR	ip-149.255.31.255.zelenaya.net