Robtex

Up: 200.24.160.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 200.24.160.0/22
Down right: 200.24.164.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
200.24.160.0	PTR	host-200-24-160-0.telmex.com.pe
200.24.160.64	PTR	host-200-24-160-64.telmex.com.pe
200.24.160.131	PTR	mail.casasycosas.com
200.24.160.131	PTR	mail.casasycosas.com.pe
200.24.160.131	PTR	host-200-24-160-131.telmex.com.pe
200.24.161.114	PTR	mail.cosmos.com.pe
200.24.161.114	PTR	host-200-24-161-114.telmex.com.pe
200.24.161.138	PTR	host-200-24-161-138.telmex.com.pe
200.24.161.138	A	mailgate.oriflame.com.pe
200.24.161.141	A	mail.oriflame.com.pe
200.24.162.72	PTR	host-200-24-162-72.telmex.com.pe
200.24.162.74	A+PTR	mail.prosegur.com.pe
200.24.162.74	PTR	host-200-24-162-74.telmex.com.pe
200.24.162.80	PTR	dns.t-copia.com.pe
200.24.162.80	PTR	host-200-24-162-80.telmex.com.pe
200.24.162.82	PTR	mail.t-copia.com.pe
200.24.162.82	PTR	host-200-24-162-82.telmex.com.pe
200.24.162.83	PTR	www.t-copia.com.pe
200.24.162.83	PTR	host-200-24-162-83.telmex.com.pe
200.24.163.140	PTR	mail.filtroslys.com.pe
200.24.163.178	A+PTR	mail.desco.org.pe
200.24.163.194	PTR	ns1.claro.com.pe
200.24.163.195	PTR	mail.claro.com.pe
200.24.163.199	PTR	ns2.claro.com.pe
200.24.163.235	PTR	www.tim.com.pe
200.24.164.95	PTR	host-200-24-164-95.telmex.com.pe
200.24.164.147	PTR	mail.bmp.com.pe
200.24.164.230	PTR	mail.optictradingcompany.com
200.24.164.230	PTR	mail.drasac.com.pe
200.24.165.19	PTR	host-200-24-165-19.telmex.com.pe
200.24.165.25	PTR	host-200-24-165-25.telmex.com.pe
200.24.165.99	PTR	host-200-24-165-99.telmex.com.pe
200.24.165.137	PTR	host-200-24-165-137.telmex.com.pe
200.24.165.234	PTR	host-200-24-165-234.telmex.com.pe
200.24.165.235	PTR	host-200-24-165-235.telmex.com.pe
200.24.165.242	PTR	host-200-24-165-242.telmex.com.pe
200.24.166.3	PTR	host.ucsp.pe
200.24.166.3	PTR	mail.ucsp.pe
200.24.166.3	PTR	host-200-24-166-3.telmex.com.pe
200.24.166.12	PTR	mail.alprosa.com.pe
200.24.166.12	A+PTR	mail.tomasino.com.pe
200.24.166.12	A	mailserver.alprosa.com.pe
200.24.166.43	PTR	host-200-24-166-43.telmex.com.pe
200.24.166.48	PTR	host-200-24-166-48.telmex.com.pe
200.24.166.50	PTR	host-200-24-166-50.telmex.com.pe
200.24.166.51	PTR	host-200-24-166-51.telmex.com.pe
200.24.166.56	PTR	host-200-24-166-56.telmex.com.pe
200.24.166.57	PTR	host-200-24-166-57.telmex.com.pe
200.24.166.58	PTR	host-200-24-166-58.telmex.com.pe
200.24.166.59	PTR	host-200-24-166-59.telmex.com.pe
200.24.166.64	PTR	host-200-24-166-64.telmex.com.pe
200.24.166.75	PTR	merchants.dragonfans.com
200.24.166.75	PTR	www.dragonfans.com
200.24.166.75	PTR	www.sexonet.com
200.24.166.90	PTR	host-200-24-166-90.telmex.com.pe
200.24.166.90	A	mail.cajaincasur.com.pe
200.24.166.98	A+PTR	mail.cajaincasur.com.pe
200.24.166.99	PTR	host-200-24-166-99.telmex.com.pe
200.24.166.99	A	cajaincasur.com.pe
200.24.166.116	A	aeprescott.org.pe
200.24.167.0	PTR	host-200-24-167-0.telmex.com.pe
200.24.167.51	PTR	host-200-24-167-51.telmex.com.pe
200.24.167.56	PTR	host-200-24-167-56.telmex.com.pe
200.24.167.67	PTR	host-200-24-167-67.telmex.com.pe
200.24.167.80	PTR	host-200-24-167-80.telmex.com.pe
200.24.167.106	PTR	mail.securylogin.com
200.24.167.107	A	sysbtc.com
200.24.167.110	A	mail.rey.com.pe
200.24.167.110	A	mail.ggdk.us
200.24.167.129	PTR	host-200-24-167-129.telmex.com.pe
200.24.167.153	PTR	host-200-24-167-153.telmex.com.pe
200.24.167.163	PTR	host-200-24-167-163.telmex.com.pe
200.24.167.242	PTR	host-200-24-167-242.telmex.com.pe
200.24.167.250	PTR	host-200-24-167-250.telmex.com.pe