Robtex

Up: 189.240.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 189.240.48.0/21
Down right: 189.240.56.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
189.240.48.152	PTR	customer-189-240-48-152.uninet-ide.com.mx
189.240.48.219	PTR	customer-189-240-48-219.uninet-ide.com.mx
189.240.49.12	PTR	customer-189-240-49-12.uninet-ide.com.mx
189.240.49.81	PTR	customer-189-240-49-81.uninet-ide.com.mx
189.240.51.6	A	mail.ck.com.mx
189.240.51.162	PTR	customer-189-240-51-162.uninet-ide.com.mx
189.240.52.82	PTR	customer-189-240-52-82.uninet-ide.com.mx
189.240.53.2	PTR	customer-189-240-53-2.uninet-ide.com.mx
189.240.53.4	PTR	customer-189-240-53-4.uninet-ide.com.mx
189.240.53.18	PTR	customer-189-240-53-18.uninet-ide.com.mx
189.240.53.33	PTR	customer-189-240-53-33.uninet-ide.com.mx
189.240.53.34	PTR	customer-189-240-53-34.uninet-ide.com.mx
189.240.53.49	PTR	customer-189-240-53-49.uninet-ide.com.mx
189.240.53.64	PTR	customer-189-240-53-64.uninet-ide.com.mx
189.240.53.98	PTR	customer-189-240-53-98.uninet-ide.com.mx
189.240.53.129	PTR	customer-189-240-53-129.uninet-ide.com.mx
189.240.53.147	PTR	customer-189-240-53-147.uninet-ide.com.mx
189.240.53.192	PTR	customer-189-240-53-192.uninet-ide.com.mx
189.240.53.193	PTR	customer-189-240-53-193.uninet-ide.com.mx
189.240.53.209	PTR	customer-189-240-53-209.uninet-ide.com.mx
189.240.54.37	PTR	mail.surtidor.com
189.240.54.37	A	webmail.surtidor.com.mx
189.240.54.37	A	mail.surtidor.com.mx
189.240.54.233	PTR	customer-189-240-54-233.uninet-ide.com.mx
189.240.55.4	PTR	customer-189-240-55-4.uninet-ide.com.mx
189.240.55.17	PTR	customer-189-240-55-17.uninet-ide.com.mx
189.240.55.37	A	www.papeleradabo.mx
189.240.55.64	PTR	customer-189-240-55-64.uninet-ide.com.mx
189.240.55.80	PTR	customer-189-240-55-80.uninet-ide.com.mx
189.240.55.81	PTR	customer-189-240-55-81.uninet-ide.com.mx
189.240.55.82	PTR	customer-189-240-55-82.uninet-ide.com.mx
189.240.55.83	PTR	customer-189-240-55-83.uninet-ide.com.mx
189.240.55.97	PTR	customer-189-240-55-97.uninet-ide.com.mx
189.240.55.112	PTR	customer-189-240-55-112.uninet-ide.com.mx
189.240.55.128	PTR	customer-189-240-55-128.uninet-ide.com.mx
189.240.55.147	PTR	customer-189-240-55-147.uninet-ide.com.mx
189.240.55.162	PTR	customer-189-240-55-162.uninet-ide.com.mx
189.240.55.195	PTR	customer-189-240-55-195.uninet-ide.com.mx
189.240.55.209	PTR	customer-189-240-55-209.uninet-ide.com.mx
189.240.55.241	PTR	customer-189-240-55-241.uninet-ide.com.mx
189.240.56.12	PTR	customer-189-240-56-12.uninet-ide.com.mx
189.240.56.115	PTR	customer-189-240-56-115.uninet-ide.com.mx
189.240.57.146	PTR	customer-189-240-57-146.uninet-ide.com.mx
189.240.57.146	A	dn1.cjcdmx.gob.mx
189.240.57.146	A	www.cjdf.gob.mx
189.240.57.241	PTR	customer-189-240-57-241.uninet-ide.com.mx
189.240.58.165	PTR	customer-189-240-58-165.uninet-ide.com.mx
189.240.58.165	A	www.locatel.cdmx.gob.mx
189.240.58.171	PTR	customer-189-240-58-171.uninet-ide.com.mx
189.240.58.171	A	justiciaparati.mx
189.240.58.171	A	www.justiciaparati.mx
189.240.59.40	PTR	customer-189-240-59-40.uninet-ide.com.mx
189.240.59.134	PTR	customer-189-240-59-134.uninet-ide.com.mx
189.240.59.134	A	portal.iedf.org.mx
189.240.59.178	PTR	customer-189-240-59-178.uninet-ide.com.mx
189.240.60.166	PTR	customer-189-240-60-166.uninet-ide.com.mx
189.240.60.166	A	aao.gob.mx
189.240.60.167	A+PTR	mta.aao.gob.mx
189.240.61.32	PTR	customer-189-240-61-32.uninet-ide.com.mx
189.240.61.77	PTR	customer-189-240-61-77.uninet-ide.com.mx
189.240.61.77	A	speedtest2-coyoacan.triara.com
189.240.62.111	PTR	customer-189-240-62-111.uninet-ide.com.mx
189.240.63.50	PTR	customer-189-240-63-50.uninet-ide.com.mx
189.240.63.50	A	justo-sierra.com.mx
189.240.63.50	A	webtil.justo-sierra.com.mx
189.240.63.51	PTR	customer-189-240-63-51.uninet-ide.com.mx
189.240.63.51	A	correo.justo-sierra.mx
189.240.63.54	PTR	customer-189-240-63-54.uninet-ide.com.mx