Robtex

Up: 64.211.148.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 64.211.149.0/25
Down right: 64.211.149.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.211.149.4	A+PTR	outbound3.callwave.com
64.211.149.6	A+PTR	tunnel91.callwave.com
64.211.149.8	A+PTR	wwwidle.callwave.com
64.211.149.10	A+PTR	www90.callwave.com
64.211.149.11	A	www.callwave.com
64.211.149.15	A	wxlb.callwave.com
64.211.149.16	A	wwwtest.callwave.com
64.211.149.17	A+PTR	clientdl.callwave.com
64.211.149.17	A+PTR	popper.callwave.com
64.211.149.17	A+PTR	ppopper.callwave.com
64.211.149.21	A+PTR	upgradera.callwave.com
64.211.149.22	PTR	www.callwavemobile.com
64.211.149.24	PTR	wxgwy.callwave.com
64.211.149.24	A	wx26.callwave.com
64.211.149.24	A	wx29.callwave.com
64.211.149.25	A	ads2.callwave.com
64.211.149.26	A+PTR	medialb.callwave.com
64.211.149.29	A+PTR	ht.callwave.com
64.211.149.36	PTR	relay93.callwave.net
64.211.149.37	PTR	relay94.callwave.net
64.211.149.42	PTR	prodsm92old.callwave.com
64.211.149.50	A	sip.callwave.com
64.211.149.51	A+PTR	cer.callwave.com
64.211.149.65	A+PTR	relay96.callwave.com
64.211.149.200	PTR	fw91-dmznat-gblx149.callwave.com
64.211.149.250	PTR	mx.nv.net
64.211.149.251	A	ns2.callwave.com
64.211.149.254	PTR	reno.netgeeks.net