Robtex

Up: 67.23.128.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 67.23.128.0/25
Down right: 67.23.128.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
67.23.128.1	PTR	ns1.nexxonline.com
67.23.128.2	PTR	ns1.netfirms.com
67.23.128.2	A	www.green-m.ru
67.23.128.2	A	ns1.banmaixanh.net
67.23.128.4	PTR	ns2.netfirms.com
67.23.128.4	A	www.green-m.ru
67.23.128.11	A+PTR	con1.netfirms.com
67.23.128.12	A+PTR	con2.netfirms.com
67.23.128.15	A	nfdevwiki.netfirms.com
67.23.128.15	A	nfadminwiki.netfirms.com
67.23.128.21	A	whois.netfirms.com
67.23.128.23	PTR	controlpanel.netfirms.com
67.23.128.24	PTR	www.netfirms.ca
67.23.128.26	PTR	www.netfirms.com
67.23.128.26	A	nexx.com
67.23.128.26	A	*.net-firms.org
67.23.128.27	A+PTR	www.netfirms.co.uk
67.23.128.27	A	netfirms.co.uk
67.23.128.28	A+PTR	admn.netfirms.com
67.23.128.50	A+PTR	smtp-admin-1.netfirms.com
67.23.128.50	A	q0-admin-norm.netfirms.com
67.23.128.50	A	q1-admin-norm.netfirms.com
67.23.128.51	A	smtp-nf-1.netfirms.com
67.23.128.52	A+PTR	smtp-admin-2.netfirms.com
67.23.128.53	A	smtp-nf-2.netfirms.com
67.23.128.54	A+PTR	mx1.nexxonline.com
67.23.128.54	A	q0.nexxonline.com
67.23.128.54	A	q0.nexxonline.ca
67.23.128.55	A+PTR	mx2.nexxonline.com
67.23.128.55	A	q1.nexxonline.ca
67.23.128.55	A	q1.nexxonline.com
67.23.128.56	A+PTR	mx1.netfirms.com
67.23.128.56	A	q0.netfirms.com
67.23.128.57	A+PTR	mx2.netfirms.com
67.23.128.57	A	q1.netfirms.com
67.23.128.57	A	mx2.cogni.org
67.23.128.58	PTR	smtp.netfirms.com
67.23.128.59	PTR	pop.netfirms.com
67.23.128.59	A	pop0.netfirms.com
67.23.128.59	A	pop.gopartners.net
67.23.128.70	A	nfwebmail.netfirms.com
67.23.128.72	A	webmail.nexxonline.com
67.23.128.120	A	in-norm-0.netfirms.com
67.23.128.121	A+PTR	in-norm-1.netfirms.com
67.23.128.122	A	in-norm-2.netfirms.com
67.23.128.123	A	in-norm-3.netfirms.com
67.23.128.124	A+PTR	in-norm-4.netfirms.com
67.23.128.125	A	in-norm-5.netfirms.com
67.23.128.126	A	in-norm-6.netfirms.com
67.23.128.127	A	in-norm-7.netfirms.com
67.23.128.128	A	in-norm-8.netfirms.com
67.23.128.129	A	in-norm-9.netfirms.com
67.23.128.130	A	cgi-bulk-0.netfirms.com
67.23.128.131	A	cgi-bulk-1.netfirms.com
67.23.128.132	A	cgi-bulk-2.netfirms.com
67.23.128.133	A	cgi-bulk-3.netfirms.com
67.23.128.134	A	cgi-bulk-4.netfirms.com
67.23.128.135	A	cgi-bulk-5.netfirms.com
67.23.128.136	A	cgi-bulk-6.netfirms.com
67.23.128.137	A	cgi-bulk-7.netfirms.com
67.23.128.138	A	cgi-bulk-8.netfirms.com
67.23.128.139	A	cgi-bulk-9.netfirms.com
67.23.128.140	A	cgi-norm-0.netfirms.com
67.23.128.141	A	cgi-norm-1.netfirms.com
67.23.128.142	A	cgi-norm-2.netfirms.com
67.23.128.143	A	cgi-norm-3.netfirms.com
67.23.128.144	A	cgi-norm-4.netfirms.com
67.23.128.145	A	cgi-norm-5.netfirms.com
67.23.128.146	A	cgi-norm-6.netfirms.com
67.23.128.147	A	cgi-norm-7.netfirms.com
67.23.128.148	A	cgi-norm-8.netfirms.com
67.23.128.149	A	cgi-norm-9.netfirms.com
67.23.128.150	A	relay-bulk-0.netfirms.com
67.23.128.151	A	relay-bulk-1.netfirms.com
67.23.128.152	A	relay-bulk-2.netfirms.com
67.23.128.153	A	relay-bulk-3.netfirms.com
67.23.128.154	A	relay-bulk-4.netfirms.com
67.23.128.155	A	relay-bulk-5.netfirms.com
67.23.128.156	A	relay-bulk-6.netfirms.com
67.23.128.157	A	relay-bulk-7.netfirms.com
67.23.128.158	A	relay-bulk-8.netfirms.com
67.23.128.159	A	relay-bulk-9.netfirms.com
67.23.128.160	A	relay-norm-0.netfirms.com
67.23.128.161	A	relay-norm-1.netfirms.com
67.23.128.162	A	relay-norm-2.netfirms.com
67.23.128.163	A	relay-norm-3.netfirms.com
67.23.128.164	A	relay-norm-4.netfirms.com
67.23.128.165	A	relay-norm-5.netfirms.com
67.23.128.166	A	relay-norm-6.netfirms.com
67.23.128.167	A	relay-norm-7.netfirms.com
67.23.128.168	A	relay-norm-8.netfirms.com
67.23.128.169	A	relay-norm-9.netfirms.com
67.23.128.170	A	wm-norm-0.netfirms.com
67.23.128.171	A	wm-norm-1.netfirms.com
67.23.128.172	A	wm-norm-2.netfirms.com
67.23.128.173	A	wm-norm-3.netfirms.com
67.23.128.174	A	wm-norm-4.netfirms.com
67.23.128.175	A	wm-norm-5.netfirms.com
67.23.128.176	A	wm-norm-6.netfirms.com
67.23.128.177	A	wm-norm-7.netfirms.com
67.23.128.178	A	wm-norm-8.netfirms.com
67.23.128.179	A+PTR	wm-norm-9.netfirms.com
67.23.128.180	A	wm-bulk-0.netfirms.com
67.23.128.181	A	wm-bulk-1.netfirms.com
67.23.128.182	A	wm-bulk-2.netfirms.com
67.23.128.183	A	wm-bulk-3.netfirms.com
67.23.128.184	A	wm-bulk-4.netfirms.com
67.23.128.185	A	wm-bulk-5.netfirms.com
67.23.128.186	A	wm-bulk-6.netfirms.com
67.23.128.187	A	wm-bulk-7.netfirms.com
67.23.128.188	A	wm-bulk-8.netfirms.com
67.23.128.189	A+PTR	wm-bulk-9.netfirms.com
67.23.128.200	A	admin-norm-a.netfirms.com
67.23.128.201	A	nf-norm-a.netfirms.com
67.23.128.241	A	webhostrevenue.com
67.23.128.241	A	webhostrevenue.ca
67.23.128.241	A	www.webhostrevenue.ca