Robtex

Up: 200.23.160.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 200.23.161.0/25
Down right: 200.23.161.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
200.23.161.1	A+PTR	e1a.cibnor.mx
200.23.161.2	A+PTR	e2.cibnor.mx
200.23.161.3	A+PTR	e3.cibnor.mx
200.23.161.4	A+PTR	e4.cibnor.mx
200.23.161.5	A+PTR	e5.cibnor.mx
200.23.161.6	A+PTR	filtro.cibnor.mx
200.23.161.7	A+PTR	e7.cibnor.mx
200.23.161.8	A+PTR	e8.cibnor.mx
200.23.161.9	A+PTR	e9.cibnor.mx
200.23.161.10	A+PTR	e10.cibnor.mx
200.23.161.11	A+PTR	www04.cibnor.mx
200.23.161.12	A+PTR	e12sw.cibnor.mx
200.23.161.13	A+PTR	e13.cibnor.mx
200.23.161.14	A+PTR	clonlmiller.cibnor.mx
200.23.161.15	A+PTR	e15.cibnor.mx
200.23.161.16	A+PTR	e16.cibnor.mx
200.23.161.17	A+PTR	e17.cibnor.mx
200.23.161.18	A+PTR	e18.cibnor.mx
200.23.161.19	A+PTR	e19.cibnor.mx
200.23.161.105	A	mammalogyinternational.org
200.23.161.126	A+PTR	golfo2015.cibnor.mx
200.23.161.126	A	cibnor.edu.mx
200.23.161.126	A	www.cibnor.org
200.23.161.130	A+PTR	golfo.cibnor.mx
200.23.161.130	A	cibnor.edu.mx
200.23.161.130	A	cibnor.gob.mx
200.23.161.141	A	e141.cibnor.mx
200.23.161.182	A	e182.cibnor.mx
200.23.161.188	A	e188.cibnor.mx
200.23.161.206	A+PTR	cibmail.cibnor.mx
200.23.161.225	A+PTR	cortes.cibnor.mx
200.23.161.226	A+PTR	bermejo.cibnor.mx
200.23.161.226	A	www.cibnor.org
200.23.161.239	PTR	www.cibnor.com.mx
200.23.161.239	A	cibnor.com.mx