Robtex

Up: 187.172.0.0/18
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Down left: 187.172.0.0/20
Down right: 187.172.16.0/20

IP	Type	Hostname
187.172.2.2	PTR	dsl-187-172-2-2-dyn.prod-infinitum.com.mx
187.172.8.34	PTR	dsl-187-172-8-34-dyn.prod-infinitum.com.mx
187.172.8.129	PTR	dsl-187-172-8-129-dyn.prod-infinitum.com.mx
187.172.10.224	PTR	dsl-187-172-10-224-dyn.prod-infinitum.com.mx
187.172.10.239	PTR	dsl-187-172-10-239-dyn.prod-infinitum.com.mx
187.172.12.66	PTR	dsl-187-172-12-66-dyn.prod-infinitum.com.mx
187.172.12.71	PTR	dsl-187-172-12-71-dyn.prod-infinitum.com.mx
187.172.13.174	A	smarcos.dyndns.org
187.172.14.2	PTR	dsl-187-172-14-2-dyn.prod-infinitum.com.mx
187.172.15.105	PTR	dsl-187-172-15-105-dyn.prod-infinitum.com.mx
187.172.15.125	PTR	dsl-187-172-15-125-dyn.prod-infinitum.com.mx
187.172.19.119	PTR	dsl-187-172-19-119-dyn.prod-infinitum.com.mx
187.172.20.2	PTR	dsl-187-172-20-2-dyn.prod-infinitum.com.mx
187.172.21.213	PTR	dsl-187-172-21-213-dyn.prod-infinitum.com.mx
187.172.22.113	A	mail.sapiserv.com
187.172.24.182	PTR	dsl-187-172-24-182-dyn.prod-infinitum.com.mx
187.172.26.2	PTR	dsl-187-172-26-2-dyn.prod-infinitum.com.mx
187.172.27.163	PTR	dsl-187-172-27-163-dyn.prod-infinitum.com.mx
187.172.27.163	A	farbreizh.com
187.172.27.245	PTR	dsl-187-172-27-245-dyn.prod-infinitum.com.mx
187.172.28.123	PTR	dsl-187-172-28-123-dyn.prod-infinitum.com.mx
187.172.28.123	A	rgaservigaz.homeip.net
187.172.30.216	PTR	dsl-187-172-30-216-dyn.prod-infinitum.com.mx
187.172.31.205	PTR	dsl-187-172-31-205-dyn.prod-infinitum.com.mx