Robtex

Up: 168.255.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 168.255.128.0/18
Down right: 168.255.192.0/18
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
168.255.153.24	A	pifi.sep.gob.mx
168.255.153.45	A	www.formacionrieb.sep.gob.mx
168.255.153.45	A	seb.sep.gob.mx
168.255.153.62	A	www.dgdc.sep.gob.mx
168.255.153.133	PTR	siidfi.sep.gob.mx
168.255.153.133	PTR	www.siidfi.sep.gob.mx
168.255.153.133	A	dfi.ses.sep.gob.mx
168.255.153.149	A+PTR	www.cecyte.edu.mx
168.255.153.160	A	eib.sep.gob.mx
168.255.153.162	PTR	www.talentos.sep.gob.mx
168.255.153.162	PTR	www.repositoriocnbes.sep.gob.mx
168.255.153.162	A+PTR	www.educacionsuperior.sep.gob.mx
168.255.201.80	A	www.dgep.sep.gob.mx
168.255.201.80	A	www.snee.sep.gob.mx
168.255.201.80	A	dgep.sep.gob.mx
168.255.201.84	A	dns4.sep.gob.mx
168.255.251.2	PTR	outred.sep.gob.mx
168.255.251.28	A	www.siben.sep.gob.mx
168.255.251.29	A	agenciasindautor.sep.gob.mx
168.255.251.37	A	oic.sep.gob.mx
168.255.251.39	A	correo.sep.gob.mx
168.255.251.91	A	pifi.sep.gob.mx
168.255.251.185	A	dgdge.sep.gob.mx
168.255.251.187	PTR	gstbasica.sep.gob.mx
168.255.251.187	PTR	gstiniciativas.basica.sep.gob.mx
168.255.251.187	PTR	basica3000f.sep.gob.mx
168.255.251.203	PTR	www.becate.mx
168.255.251.203	PTR	www.tubeca.mx
168.255.251.203	PTR	becate.mx
168.255.253.11	A+PTR	dns1.sep.gob.mx
168.255.253.12	A+PTR	dns2.sep.gob.mx
168.255.253.234	A	as2.sep.gob.mx
168.255.253.252	A	as.sep.gob.mx
168.255.254.23	A	planeacionylogistica.sep.gob.mx
168.255.254.29	A	promep.sep.gob.mx
168.255.254.30	A	promep.sep.gob.mx
168.255.254.32	A	promepca.sep.gob.mx
168.255.254.36	A	ses2.sep.gob.mx
168.255.254.53	A	eib.sep.gob.mx
168.255.254.136	A	ses4.sep.gob.mx
168.255.254.137	A	promepca.sep.gob.mx