Robtex

Up: 200.24.168.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 200.24.172.0/23
Down right: 200.24.174.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
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
200.24.172.172	PTR	msc.com.pe
200.24.172.172	PTR	www.grandecuisine.com.pe
200.24.172.172	PTR	www.junius.com.pe
200.24.172.230	A	mail.mundodeli.cl
200.24.173.255	PTR	host-200-24-173-255.telmex.com.pe
200.24.174.0	PTR	host-200-24-174-0.telmex.com.pe
200.24.174.31	PTR	host-200-24-174-31.telmex.com.pe
200.24.174.32	PTR	host-200-24-174-32.telmex.com.pe
200.24.174.148	PTR	host-200-24-174-148.telmex.com.pe
200.24.174.148	PTR	www.empleosperu.gob.pe
200.24.175.0	PTR	host-200-24-175-0.telmex.com.pe