Robtex

Up: 198.143.50.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 198.143.51.0/25
Down right: 198.143.51.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
198.143.51.0	PTR	198.143.51.0.ip.incapdns.net
198.143.51.0	A	85vt.com
198.143.51.0	A	rg04.com
198.143.51.1	A+PTR	198.143.51.1.ip.incapdns.net
198.143.51.9	A+PTR	198.143.51.9.ip.incapdns.net
198.143.51.10	A+PTR	198.143.51.10.ip.incapdns.net
198.143.51.10	A	qj14.com
198.143.51.12	A	198.143.51.12.ip.incapdns.net
198.143.51.20	PTR	198.143.51.20.ip.incapdns.net
198.143.51.20	A	kkk23.com
198.143.51.20	A	138aa.com
198.143.51.30	A+PTR	198.143.51.30.ip.incapdns.net
198.143.51.30	A	kkk23.com
198.143.51.30	A	85zm.com
198.143.51.33	A+PTR	198.143.51.33.ip.incapdns.net
198.143.51.65	A+PTR	198.143.51.65.ip.incapdns.net
198.143.51.70	PTR	198.143.51.70.ip.incapdns.net
198.143.51.70	A	qj14.com
198.143.51.70	A	87od.com
198.143.51.73	A+PTR	198.143.51.73.ip.incapdns.net
198.143.51.75	PTR	198.143.51.75.ip.incapdns.net
198.143.51.113	PTR	198.143.51.113.ip.incapdns.net
198.143.51.120	A+PTR	198.143.51.120.ip.incapdns.net
198.143.51.161	A+PTR	198.143.51.161.ip.incapdns.net
198.143.51.182	PTR	198.143.51.182.ip.incapdns.net
198.143.51.215	PTR	198.143.51.215.ip.incapdns.net
198.143.51.244	A+PTR	198.143.51.244.ip.incapdns.net