Robtex

Up: 201.130.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 201.130.44.0/23
Down right: 201.130.46.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
201.130.44.106	PTR	handset2911.nextel.com.mx
201.130.46.1	PTR	handset3316.nextel.com.mx
201.130.46.6	PTR	handset3321.nextel.com.mx
201.130.46.8	A	epdg.ims.attmex.mx
201.130.46.13	PTR	handset3328.nextel.com.mx
201.130.46.15	PTR	handset3330.nextel.com.mx
201.130.46.21	PTR	handset3336.nextel.com.mx
201.130.46.22	PTR	handset3337.nextel.com.mx
201.130.46.23	PTR	handset3338.nextel.com.mx
201.130.46.28	PTR	handset3343.nextel.com.mx
201.130.46.28	A	aes.ims.attmex.mx
201.130.46.29	PTR	handset3344.nextel.com.mx
201.130.46.30	PTR	handset3345.nextel.com.mx
201.130.46.42	PTR	handset3357.nextel.com.mx
201.130.46.44	PTR	handset3359.nextel.com.mx
201.130.46.47	PTR	handset3362.nextel.com.mx
201.130.46.50	PTR	handset3365.nextel.com.mx
201.130.46.55	PTR	handset3370.nextel.com.mx
201.130.46.63	PTR	handset3378.nextel.com.mx
201.130.46.65	PTR	handset3380.nextel.com.mx
201.130.46.66	PTR	handset3381.nextel.com.mx
201.130.46.76	PTR	handset3391.nextel.com.mx
201.130.46.80	PTR	handset3395.nextel.com.mx
201.130.46.82	PTR	handset3397.nextel.com.mx
201.130.46.82	A	speed1.stafemex.attmex.mx
201.130.46.83	PTR	handset3398.nextel.com.mx
201.130.46.83	A	speed1.ecamex.attmex.mx
201.130.46.85	PTR	handset3400.nextel.com.mx
201.130.46.86	PTR	handset3401.nextel.com.mx
201.130.46.89	PTR	handset3404.nextel.com.mx
201.130.46.93	PTR	handset3408.nextel.com.mx
201.130.46.93	A	oss.att.com.mx
201.130.46.96	PTR	handset3411.nextel.com.mx
201.130.46.101	PTR	handset3416.nextel.com.mx
201.130.46.109	PTR	handset3424.nextel.com.mx
201.130.46.110	PTR	handset3425.nextel.com.mx
201.130.46.111	PTR	handset3426.nextel.com.mx
201.130.46.114	PTR	handset3429.nextel.com.mx
201.130.46.114	A	authkeysmx04.att.com.mx
201.130.46.117	PTR	handset3432.nextel.com.mx
201.130.46.118	PTR	handset3433.nextel.com.mx
201.130.46.119	PTR	handset3434.nextel.com.mx
201.130.46.121	PTR	handset3436.nextel.com.mx
201.130.46.122	A	securecall.att.com.mx
201.130.46.123	A	securecall.att.com.mx
201.130.46.124	PTR	handset3439.nextel.com.mx
201.130.46.127	PTR	handset3442.nextel.com.mx
201.130.46.131	PTR	handset3446.nextel.com.mx
201.130.46.132	PTR	handset3447.nextel.com.mx
201.130.46.150	PTR	handset3465.nextel.com.mx
201.130.46.151	PTR	handset3466.nextel.com.mx
201.130.46.153	PTR	handset3468.nextel.com.mx
201.130.46.154	PTR	handset3469.nextel.com.mx
201.130.46.161	PTR	handset3476.nextel.com.mx
201.130.46.162	PTR	handset3477.nextel.com.mx
201.130.46.169	PTR	handset3484.nextel.com.mx
201.130.46.170	PTR	handset3485.nextel.com.mx
201.130.46.171	PTR	handset3486.nextel.com.mx
201.130.46.176	PTR	handset3491.nextel.com.mx
201.130.46.183	PTR	handset3498.nextel.com.mx
201.130.46.184	PTR	handset3499.nextel.com.mx
201.130.46.186	PTR	handset3501.nextel.com.mx
201.130.46.194	PTR	handset3509.nextel.com.mx
201.130.46.195	PTR	handset3510.nextel.com.mx
201.130.46.198	PTR	handset3513.nextel.com.mx
201.130.46.200	PTR	handset3515.nextel.com.mx
201.130.46.209	PTR	handset3524.nextel.com.mx
201.130.46.212	A	occ-0-2305-116.1.nflxso.net
201.130.46.212	A	occ-0-2305-114.1.nflxso.net
201.130.46.219	PTR	handset3534.nextel.com.mx
201.130.46.221	PTR	handset3536.nextel.com.mx
201.130.46.225	PTR	handset3540.nextel.com.mx
201.130.46.231	PTR	handset3546.nextel.com.mx
201.130.46.234	PTR	handset3549.nextel.com.mx
201.130.46.240	PTR	handset3555.nextel.com.mx
201.130.46.242	PTR	handset3557.nextel.com.mx
201.130.46.246	PTR	handset3561.nextel.com.mx
201.130.46.247	PTR	handset3562.nextel.com.mx
201.130.47.9	A+PTR	dns6.iusacell.com.mx
201.130.47.9	A	dns6.iusacell.com
201.130.47.10	PTR	dns2.nextel.com.mx
201.130.47.10	A	nsmx2.attdns.com
201.130.47.11	A	nsmx3.attdns.com
201.130.47.13	A	att.com.mx
201.130.47.13	A	att.mx
201.130.47.14	A+PTR	mailhost2.nextel.com.mx
201.130.47.16	PTR	mail.nextel.com.mx
201.130.47.16	A	visualivr.wip.att.com.mx
201.130.47.16	A	globalaccess.att.com.mx
201.130.47.17	A	prensanextel.com.mx
201.130.47.29	A	mobile.att.com.mx
201.130.47.33	PTR	niie2e.nextel.com.mx
201.130.47.39	A+PTR	mailhost.nextel.com.mx
201.130.47.39	A	mailhost.nextel.mx
201.130.47.41	A	puntos.att.com.mx
201.130.47.46	PTR	credit.shotsonline.com.mx
201.130.47.48	A	vpn.att.com.mx
201.130.47.49	PTR	vpn2.nextel.com.mx
201.130.47.58	A	probusinessapps.mx
201.130.47.63	A	panda.att.com.mx
201.130.47.68	PTR	elearning.nextel.com.mx
201.130.47.75	A	uat.nextel.com.br
201.130.47.76	A	wslab.nextelinternational.com
201.130.47.76	A	miattweb.att.com.mx
201.130.47.89	PTR	mailhost3.nextel.com.mx
201.130.47.89	A	mailhost3.nextel.mx
201.130.47.92	A	redirect.att.com.mx
201.130.47.93	A	apps.att.com.mx
201.130.47.121	A	movil.att.com.mx
201.130.47.141	PTR	sndr1.info.att-mail.com.mx
201.130.47.145	PTR	sndr2.facturacionnextel.com.mx
201.130.47.145	A	sndr2.facturacion.att-mail.com.mx
201.130.47.146	PTR	sndr3.facturacionnextel.com.mx
201.130.47.148	A	sndr2.credito.att-mail.com.mx
201.130.47.150	A	tea.facturacionnextel.com.mx
201.130.47.150	A	tea.creditonextel.com.mx
201.130.47.150	A	tea.facturacion.att-mail.com.mx
201.130.47.152	A	go.facturacion.att-mail.com.mx
201.130.47.155	A	ns1.chat.att.com.mx
201.130.47.155	A	mxmcislonline01.att.com.mx
201.130.47.156	A	islpronto.chat.att.com.mx
201.130.47.156	A	server2.chat.att.com.mx
201.130.47.156	A	ns2.chat.att.com.mx
201.130.47.197	A	unefon.com.mx
201.130.47.197	A	unefon.com
201.130.47.197	A	unefon.mx
201.130.47.200	A	mailnextel.com.mx
201.130.47.200	A	mailhost.mailnextel.com.mx
201.130.47.215	A	mxmgdcvpra5141804.att.com.mx