Robtex

Up: 203.128.248.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.128.252.0/23
Down right: 203.128.254.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.128.255.2	A+PTR	aaa.geo.net.pk
203.128.255.2	A+PTR	billing.geo.net.pk
203.128.255.2	PTR	ns1.geo.net.pk
203.128.255.3	PTR	mail.geo.net.pk
203.128.255.3	PTR	ns2.geo.net.pk
203.128.255.3	PTR	pop.geo.net.pk
203.128.255.4	PTR	hosting.geo.net.pk
203.128.255.4	A	geo.net.pk
203.128.255.4	A	ahmadpowerservices.com
203.128.255.7	PTR	ns3.geo.net.pk
203.128.255.50	A	mail.pabalochistan.gov.pk
203.128.255.154	PTR	static.geo.net.pk