Robtex

Up: 200.39.96.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 200.39.112.0/21
Down right: 200.39.120.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
200.39.112.226	PTR	test.degremont.com.mx
200.39.113.1	PTR	ip-200-39-113-1-mx.marcatel.net.mx
200.39.113.2	PTR	ip-200-39-113-2-mx.marcatel.net.mx
200.39.113.18	PTR	ip-200-39-113-18-mx.marcatel.net.mx
200.39.113.34	PTR	www.fandis.com.mx
200.39.113.50	PTR	mail.fandis.com.mx
200.39.113.66	PTR	www.gruporimsa.com.mx
200.39.113.67	PTR	technobio.mx
200.39.113.67	PTR	mail.fifaco.mx
200.39.113.67	PTR	mail.technobio.mx
200.39.113.75	A	mail.corporativopv.mx
200.39.113.76	A	shl.com.mx
200.39.113.81	PTR	ip-200-39-113-81-mx.marcatel.net.mx
200.39.113.114	PTR	ip-200-39-113-114-mx.marcatel.net.mx
200.39.113.128	PTR	ip-200-39-113-128-mx.marcatel.net.mx
200.39.113.161	PTR	ip-200-39-113-161-mx.marcatel.net.mx
200.39.113.162	PTR	ip-200-39-113-162-mx.marcatel.net.mx
200.39.113.193	PTR	ip-200-39-113-193-mx.marcatel.net.mx
200.39.113.208	PTR	ip-200-39-113-208-mx.marcatel.net.mx
200.39.113.209	PTR	ip-200-39-113-209-mx.marcatel.net.mx
200.39.113.225	PTR	ip-200-39-113-225-mx.marcatel.net.mx
200.39.116.1	PTR	ip-200-39-116-1-mx.marcatel.net.mx
200.39.116.16	PTR	ip-200-39-116-16-mx.marcatel.net.mx
200.39.116.18	PTR	ip-200-39-116-18-mx.marcatel.net.mx
200.39.116.19	PTR	ip-200-39-116-19-mx.marcatel.net.mx
200.39.116.33	PTR	ip-200-39-116-33-mx.marcatel.net.mx
200.39.116.50	PTR	ip-200-39-116-50-mx.marcatel.net.mx
200.39.116.81	PTR	ip-200-39-116-81-mx.marcatel.net.mx
200.39.116.98	PTR	ip-200-39-116-98-mx.marcatel.net.mx
200.39.116.99	PTR	ip-200-39-116-99-mx.marcatel.net.mx
200.39.116.114	PTR	ip-200-39-116-114-mx.marcatel.net.mx
200.39.116.115	PTR	ip-200-39-116-115-mx.marcatel.net.mx
200.39.116.129	PTR	ip-200-39-116-129-mx.marcatel.net.mx
200.39.116.145	PTR	ip-200-39-116-145-mx.marcatel.net.mx
200.39.116.160	PTR	ip-200-39-116-160-mx.marcatel.net.mx
200.39.116.161	PTR	ip-200-39-116-161-mx.marcatel.net.mx
200.39.116.163	PTR	ip-200-39-116-163-mx.marcatel.net.mx
200.39.116.177	PTR	ip-200-39-116-177-mx.marcatel.net.mx
200.39.116.192	PTR	ip-200-39-116-192-mx.marcatel.net.mx
200.39.116.208	PTR	ip-200-39-116-208-mx.marcatel.net.mx
200.39.116.225	PTR	ip-200-39-116-225-mx.marcatel.net.mx
200.39.116.241	PTR	ip-200-39-116-241-mx.marcatel.net.mx
200.39.125.6	PTR	ip-200-39-125-6-mx.marcatel.net.mx
200.39.125.6	A	eads-telecom.com.mx
200.39.125.13	PTR	ip-200-39-125-13-mx.marcatel.net.mx