Robtex

Up: 88.151.240.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 88.151.248.0/22
Down right: 88.151.252.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
88.151.248.0	PTR	server.ipls.ru
88.151.248.1	PTR	www.ipls.ru
88.151.248.1	A	www.krastelcom.ru
88.151.248.1	A	www.xn--80aqaclnks2h.xn--p1ai
88.151.248.2	PTR	ns.ipls.ru
88.151.248.3	PTR	c10k.krastelcom.ru
88.151.248.11	PTR	ad2.ho.ipl.ru
88.151.248.11	A	ad1.ho.ipls.ru
88.151.248.11	A	ad2.ho.ipls.ru
88.151.248.12	PTR	server.ipls.ru
88.151.248.12	A	server.krastelcom.ru
88.151.248.24	PTR	server.ipls.ru
88.151.248.34	PTR	server.ipls.ru
88.151.248.93	PTR	server.ipls.ru
88.151.248.93	A	mail.t-n.ru
88.151.248.106	PTR	server.ipls.ru
88.151.248.171	PTR	server.ipls.ru
88.151.248.178	PTR	server.ipls.ru
88.151.249.1	A+PTR	ns2.ipls.ru
88.151.249.1	A	ns2.krastelcom.ru
88.151.249.1	A	backup.ipls.ru
88.151.249.127	PTR	subscriber.ipls.ru
88.151.249.168	PTR	subscriber.ipls.ru
88.151.249.234	A	pora-podarkov.ru
88.151.249.234	A	gruppa4.ru
88.151.249.234	A	modnokrasivo.ru
88.151.250.60	PTR	subscriber.ipls.ru
88.151.251.96	PTR	subscriber.ipls.ru
88.151.252.12	A	modnokrasivo.ru
88.151.252.13	PTR	subscriber.ipls.ru
88.151.252.18	PTR	subscriber.ipls.ru
88.151.252.52	PTR	mail.targetcompany.ru
88.151.252.135	PTR	subscriber.ipls.ru
88.151.252.205	PTR	subscriber.ipls.ru
88.151.253.109	PTR	subscriber.ipls.ru
88.151.253.151	PTR	subscriber.ipls.ru
88.151.254.122	PTR	subscriber.ipls.ru
88.151.254.122	A	vlukyanov.com
88.151.254.255	PTR	subscriber.ipls.ru
88.151.255.0	PTR	subscriber.ipls.ru
88.151.255.206	PTR	subscriber.ipls.ru
88.151.255.255	PTR	subscriber.ipls.ru