Robtex

Up: 200.24.160.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 200.24.168.0/22
Down right: 200.24.172.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
200.24.168.0	PTR	host-200-24-168-0.telmex.com.pe
200.24.168.154	PTR	mail.frenosa.com.pe
200.24.168.186	PTR	host-200-24-168-186.telmex.com.pe
200.24.168.226	PTR	mail.cajametropolitana.com.pe
200.24.168.226	PTR	host-200-24-168-226.telmex.com.pe
200.24.170.19	PTR	host-200-24-170-19.telmex.com.pe
200.24.170.19	PTR	mail.materpurissima.edu.pe
200.24.170.82	PTR	host-200-24-170-82.telmex.com.pe
200.24.170.82	PTR	www.proviasnac.gob.pe
200.24.170.83	PTR	host-200-24-170-83.telmex.com.pe
200.24.170.83	PTR	mail.proviasnac.gob.pe
200.24.170.170	PTR	host-200-24-170-170.telmex.com.pe
200.24.170.170	PTR	red.oit.org.pe
200.24.171.67	PTR	mail.camelotven.com
200.24.171.67	PTR	portal.camelotven.com
200.24.171.67	PTR	mail.healven.com
200.24.172.0	PTR	host-200-24-172-0.telmex.com.pe
200.24.172.123	A+PTR	firstcom.com.pe
200.24.172.123	A+PTR	exchange.firstcom.com.pe
200.24.172.123	PTR	host-200-24-172-123.telmex.com.pe
200.24.172.230	A	mail.mundodeli.cl
200.24.174.0	PTR	host-200-24-174-0.telmex.com.pe
200.24.174.32	PTR	host-200-24-174-32.telmex.com.pe
200.24.175.0	PTR	host-200-24-175-0.telmex.com.pe