Robtex

Up: 88.220.64.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 88.220.64.0/23
Down right: 88.220.66.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
88.220.65.32	A+PTR	network.johncotton.pl
88.220.65.33	A+PTR	mail.johncotton.pl
88.220.65.33	A	dns1.johncotton.pl
88.220.65.33	A	router.johncotton.pl
88.220.65.34	PTR	usernet.johncotton.pl
88.220.65.35	PTR	usernet2.johncotton.pl
88.220.65.36	A+PTR	usernet3.johncotton.pl
88.220.65.37	PTR	mail.johncotton.pl
88.220.65.38	PTR	mail.johncotton.pl
88.220.65.39	A+PTR	bcast.johncotton.pl
88.220.65.40	PTR	network.linet.net.pl
88.220.65.41	PTR	blackhole.linet.net.pl
88.220.65.41	A	eurores.pl
88.220.65.41	A	admin.mayhem.net.pl
88.220.65.42	PTR	mail.linet.net.pl
88.220.65.43	PTR	bcast.linet.net.pl
88.220.65.44	PTR	network2.johncotton.pl
88.220.65.45	PTR	router.johncotton.pl
88.220.65.46	PTR	usernet4.johncotton.pl
88.220.65.47	PTR	bcast2.johncotton.pl
88.220.65.48	PTR	network3.johncotton.pl
88.220.65.49	A+PTR	mail11.linet.net.pl
88.220.65.50	A+PTR	mail12.linet.net.pl
88.220.65.51	A+PTR	mail13.linet.net.pl
88.220.65.52	A+PTR	mail14.linet.net.pl
88.220.65.53	A+PTR	mail15.linet.net.pl
88.220.65.54	A+PTR	mail16.linet.net.pl
88.220.65.55	A+PTR	mail17.linet.net.pl
88.220.65.56	A+PTR	mail18.linet.net.pl
88.220.65.57	A+PTR	mail19.linet.net.pl
88.220.65.58	A+PTR	mail20.linet.net.pl
88.220.65.59	A+PTR	mail21.linet.net.pl
88.220.65.60	A+PTR	mail22.linet.net.pl
88.220.65.61	A+PTR	mail23.linet.net.pl
88.220.65.62	A+PTR	mail24.linet.net.pl
88.220.65.63	PTR	bcast3.johncotton.pl
88.220.66.4	PTR	krosno.energint.net
88.220.66.4	A	dns.dedykowany.net
88.220.66.4	A	dns.energint.org
88.220.66.8	A	8.energint.net
88.220.66.12	A	12.energint.net
88.220.66.27	A+PTR	bim-ax.energint.net
88.220.66.29	A+PTR	29.energint.net
88.220.66.36	A	36.energint.net
88.220.66.38	A	38.energint.net
88.220.66.41	A	41.energint.net
88.220.66.42	A	42.energint.net
88.220.66.78	A	78.energint.net
88.220.66.81	A	81.energint.net
88.220.66.114	A	114.energint.net
88.220.66.121	A	121.energint.net
88.220.66.190	PTR	190.energint.net
88.220.66.242	PTR	242.energint.net
88.220.66.242	A	gokmp.net
88.220.66.242	A	*.xq.pl
88.220.66.244	A+PTR	krosmedia.pl
88.220.66.244	A	galeriakrosno.pl
88.220.66.244	A	www.krosmedia.pl
88.220.66.251	PTR	poczta.energint.net
88.220.66.251	A	poczta.wjw.pl
88.220.66.251	A	poczta.ambona.org
88.220.66.252	PTR	ftp.energint.net
88.220.66.253	PTR	energint.net
88.220.66.253	A	pssekrosno.pl
88.220.66.253	A	*.128.energint.net