Robtex

Up: 216.29.152.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 216.29.152.0/25
Down right: 216.29.152.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.29.152.3	PTR	smtp.iwsservers.com
216.29.152.5	PTR	smtp.iwsservers.com
216.29.152.8	PTR	ortopediahisa.com.mx
216.29.152.40	PTR	internetworks.com.mx
216.29.152.40	PTR	www.internetworks.com.mx
216.29.152.42	A	cotecsa.com.mx
216.29.152.42	A	mail.futurodeexcelencia.com
216.29.152.52	PTR	ns1.internetworks.com
216.29.152.58	PTR	campusmarketing.iwsservers.com
216.29.152.58	A	mail.clever.com.mx
216.29.152.67	PTR	sysctelecom.com.mx
216.29.152.79	PTR	lideresmexicanos.iwsservers.com
216.29.152.94	PTR	w2k23.internetworks.com.mx
216.29.152.94	A	samsungpleomax.com.mx
216.29.152.99	PTR	sistemascasa.internetworks.com.mx
216.29.152.102	A	ns1.avixbraun.com
216.29.152.102	A	ns1.grupo-pegaso.com
216.29.152.102	A	ns1.pegasobroadband.com
216.29.152.106	PTR	sm1.internetworks.com.mx
216.29.152.108	A	mail.random.com.mx
216.29.152.114	PTR	psa9-01.iwsservers.com
216.29.152.114	PTR	smtp0.iwsservers.com
216.29.152.114	A	mail.sysnergia.com
216.29.152.120	PTR	airmar.com.mx
216.29.152.121	PTR	integrasoft.mx
216.29.152.121	A	universidaddeecatepec.edu.mx
216.29.152.123	A	ns2.grupo-pegaso.com
216.29.152.123	A	ns2.avixbraun.com
216.29.152.123	A	ns2.pegasobandaancha.com
216.29.152.130	PTR	siseguros.com.mx
216.29.152.151	PTR	officenet2.internetworks.com.mx
216.29.152.170	A	sunyapyapi.com
216.29.152.170	A	mail.omgtrade.com
216.29.152.179	PTR	barcel.iwsservers.com
216.29.152.179	A	urb-barcel.com
216.29.152.179	A	urbbarcel.com.mx
216.29.152.181	A	mail.eld.com.mx
216.29.152.183	PTR	rmsservices.com.mx
216.29.152.185	A	mail.guango.net
216.29.152.187	PTR	w2k03.iwsservers.com
216.29.152.192	PTR	internetworks.com
216.29.152.195	PTR	internetworks.com.mx
216.29.152.198	PTR	grupopenafiel.iwsservers.com
216.29.152.198	A	orangecrush.mx
216.29.152.198	A	etiquetaazul.mx
216.29.152.203	A	apps.iwsservers.com