Robtex

Up: 201.156.0.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 201.156.64.0/19
Down right: 201.156.96.0/19
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
201.156.73.170	A+PTR	na-201-156-73-170.static.avantel.net.mx
201.156.74.64	PTR	na-201-156-74-64.static.avantel.net.mx
201.156.74.87	A	na-201-156-74-87.static.avantel.net.mx
201.156.75.126	PTR	201-156-75-126.static.axtel.net
201.156.75.126	A	na-201-156-75-126.static.avantel.net.mx
201.156.75.126	A	korassurerkorfac.us
201.156.75.144	A+PTR	na-201-156-75-144.static.avantel.net.mx
201.156.76.143	A+PTR	na-201-156-76-143.static.avantel.net.mx
201.156.78.140	A	mail.serviciosumigas.net
201.156.79.248	A+PTR	na-201-156-79-248.static.avantel.net.mx
201.156.83.54	A	imc.com.mx
201.156.91.4	A+PTR	na-201-156-91-4.static.avantel.net.mx
201.156.91.6	A	na-201-156-91-6.static.avantel.net.mx
201.156.91.8	A	na-201-156-91-8.static.avantel.net.mx
201.156.91.10	A	na-201-156-91-10.static.avantel.net.mx
201.156.91.67	A+PTR	na-201-156-91-67.static.avantel.net.mx
201.156.91.70	A	na-201-156-91-70.static.avantel.net.mx
201.156.91.71	A	na-201-156-91-71.static.avantel.net.mx
201.156.91.76	A	na-201-156-91-76.static.avantel.net.mx
201.156.91.130	A+PTR	na-201-156-91-130.static.avantel.net.mx
201.156.91.134	A	na-201-156-91-134.static.avantel.net.mx
201.156.91.135	A	na-201-156-91-135.static.avantel.net.mx
201.156.91.136	A	na-201-156-91-136.static.avantel.net.mx
201.156.91.193	A+PTR	na-201-156-91-193.static.avantel.net.mx
201.156.91.197	A	na-201-156-91-197.static.avantel.net.mx
201.156.91.204	A	na-201-156-91-204.static.avantel.net.mx
201.156.91.205	A	na-201-156-91-205.static.avantel.net.mx
201.156.92.51	A	na-201-156-92-51.static.avantel.net.mx
201.156.93.2	A+PTR	na-201-156-93-2.static.avantel.net.mx
201.156.93.4	A+PTR	na-201-156-93-4.static.avantel.net.mx
201.156.93.7	A	na-201-156-93-7.static.avantel.net.mx
201.156.93.14	A	na-201-156-93-14.static.avantel.net.mx
201.156.93.65	A+PTR	na-201-156-93-65.static.avantel.net.mx
201.156.93.70	A	na-201-156-93-70.static.avantel.net.mx
201.156.93.72	A	na-201-156-93-72.static.avantel.net.mx
201.156.93.80	A	na-201-156-93-80.static.avantel.net.mx
201.156.93.129	A+PTR	na-201-156-93-129.static.avantel.net.mx
201.156.93.130	A+PTR	na-201-156-93-130.static.avantel.net.mx
201.156.93.132	A	na-201-156-93-132.static.avantel.net.mx
201.156.93.135	A	na-201-156-93-135.static.avantel.net.mx
201.156.93.192	A+PTR	na-201-156-93-192.static.avantel.net.mx
201.156.93.194	A+PTR	na-201-156-93-194.static.avantel.net.mx
201.156.93.196	A	na-201-156-93-196.static.avantel.net.mx
201.156.93.200	A	na-201-156-93-200.static.avantel.net.mx
201.156.94.248	A+PTR	na-201-156-94-248.static.avantel.net.mx
201.156.96.123	PTR	na-201-156-96-123.static.avantel.net.mx
201.156.96.123	A	gustavomunoz.org
201.156.96.123	A	coyotasmalu.com
201.156.97.95	PTR	na-201-156-97-95.static.avantel.net.mx
201.156.99.192	A+PTR	na-201-156-99-192.static.avantel.net.mx
201.156.100.249	A	na-201-156-100-249.static.avantel.net.mx
201.156.101.156	PTR	201-156-101-156.static.axtel.net
201.156.101.156	A	na-201-156-101-156.static.avantel.net.mx
201.156.103.3	A+PTR	na-201-156-103-3.static.avantel.net.mx
201.156.103.18	A	na-201-156-103-18.static.avantel.net.mx
201.156.103.24	A	na-201-156-103-24.static.avantel.net.mx
201.156.103.40	A	na-201-156-103-40.static.avantel.net.mx
201.156.103.67	A+PTR	na-201-156-103-67.static.avantel.net.mx
201.156.103.70	A	na-201-156-103-70.static.avantel.net.mx
201.156.103.71	A	na-201-156-103-71.static.avantel.net.mx
201.156.103.74	A	na-201-156-103-74.static.avantel.net.mx
201.156.103.137	A	na-201-156-103-137.static.avantel.net.mx
201.156.103.139	A	na-201-156-103-139.static.avantel.net.mx
201.156.103.149	A	na-201-156-103-149.static.avantel.net.mx
201.156.103.155	A	na-201-156-103-155.static.avantel.net.mx
201.156.103.199	A	na-201-156-103-199.static.avantel.net.mx
201.156.103.204	A	na-201-156-103-204.static.avantel.net.mx
201.156.103.206	A	na-201-156-103-206.static.avantel.net.mx
201.156.103.209	A	na-201-156-103-209.static.avantel.net.mx
201.156.105.85	A	na-201-156-105-85.static.avantel.net.mx
201.156.105.175	A+PTR	na-201-156-105-175.static.avantel.net.mx
201.156.105.175	A	mtycraft.com
201.156.105.175	A	tacohost.no-ip.biz
201.156.106.98	PTR	201-156-106-98.static.axtel.net
201.156.106.109	A+PTR	na-201-156-106-109.static.avantel.net.mx
201.156.107.118	A+PTR	na-201-156-107-118.static.avantel.net.mx
201.156.107.118	A	redsistemex.com
201.156.107.188	A+PTR	na-201-156-107-188.static.avantel.net.mx
201.156.108.149	A+PTR	na-201-156-108-149.static.avantel.net.mx
201.156.108.159	A+PTR	na-201-156-108-159.static.avantel.net.mx
201.156.113.225	A	na-201-156-113-225.static.avantel.net.mx
201.156.114.46	A	na-201-156-114-46.static.avantel.net.mx
201.156.116.1	A+PTR	na-201-156-116-1.static.avantel.net.mx
201.156.116.2	A+PTR	na-201-156-116-2.static.avantel.net.mx
201.156.116.9	A	na-201-156-116-9.static.avantel.net.mx
201.156.116.12	A	na-201-156-116-12.static.avantel.net.mx
201.156.116.76	A	na-201-156-116-76.static.avantel.net.mx
201.156.116.80	A	na-201-156-116-80.static.avantel.net.mx
201.156.116.82	A	na-201-156-116-82.static.avantel.net.mx
201.156.116.83	A	na-201-156-116-83.static.avantel.net.mx
201.156.116.131	A+PTR	na-201-156-116-131.static.avantel.net.mx
201.156.116.132	A	na-201-156-116-132.static.avantel.net.mx
201.156.116.133	A	na-201-156-116-133.static.avantel.net.mx
201.156.116.134	A	na-201-156-116-134.static.avantel.net.mx
201.156.116.193	A+PTR	na-201-156-116-193.static.avantel.net.mx
201.156.116.196	A	na-201-156-116-196.static.avantel.net.mx
201.156.116.207	A	na-201-156-116-207.static.avantel.net.mx
201.156.116.209	A	na-201-156-116-209.static.avantel.net.mx
201.156.119.5	A	na-201-156-119-5.static.avantel.net.mx
201.156.119.16	A	na-201-156-119-16.static.avantel.net.mx
201.156.119.18	A	na-201-156-119-18.static.avantel.net.mx
201.156.119.20	A	na-201-156-119-20.static.avantel.net.mx
201.156.119.66	A+PTR	na-201-156-119-66.static.avantel.net.mx
201.156.119.71	A	na-201-156-119-71.static.avantel.net.mx
201.156.119.74	A	na-201-156-119-74.static.avantel.net.mx
201.156.119.91	A	na-201-156-119-91.static.avantel.net.mx
201.156.119.131	A+PTR	na-201-156-119-131.static.avantel.net.mx
201.156.119.134	A	na-201-156-119-134.static.avantel.net.mx
201.156.119.136	A	na-201-156-119-136.static.avantel.net.mx
201.156.119.142	A	na-201-156-119-142.static.avantel.net.mx
201.156.119.194	A+PTR	na-201-156-119-194.static.avantel.net.mx
201.156.119.197	A	na-201-156-119-197.static.avantel.net.mx
201.156.119.202	A	na-201-156-119-202.static.avantel.net.mx
201.156.119.210	A	na-201-156-119-210.static.avantel.net.mx
201.156.123.169	A+PTR	na-201-156-123-169.static.avantel.net.mx
201.156.126.15	A	na-201-156-126-15.static.avantel.net.mx