Robtex

Up: 209.47.86.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 209.47.87.0/25
Down right: 209.47.87.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
209.47.87.4	A	ns-01.911voip.ca
209.47.87.4	A	ns-01.easycustomercare.com
209.47.87.4	A	ns-01.hook2.com
209.47.87.5	A	ns-02.myclientmail.net
209.47.87.5	A	ns-02.hook2.com
209.47.87.5	A	ns-02.comwave.net
209.47.87.15	A+PTR	proxy-01-sip0.comwave.net
209.47.87.26	A+PTR	mx1.comwave.net
209.47.87.30	A+PTR	mail.comwave.net
209.47.87.30	A	mx-02.comwave.net
209.47.87.30	A	mail-01.easycustomercare.com
209.47.87.36	A+PTR	mx1.myclientmail.net
209.47.87.36	A	myclientmail.net
209.47.87.36	A	mx3.comwave.net
209.47.87.38	A	dmsc.comwave.net
209.47.87.73	A+PTR	mail-02.easycustomercare.com
209.47.87.73	A	mx2.comwave.net
209.47.87.77	A+PTR	mx1.vm.hook2.com
209.47.87.77	A	mail.hook2.com
209.47.87.88	PTR	mx1.ihook.com
209.47.87.90	PTR	proxy-01-sip6.comwave.net
209.47.87.90	A	bt.comwave.net
209.47.87.239	A+PTR	proxy-01-sip5.comwave.net
209.47.87.244	A	911voip.ca
209.47.87.244	A	www.hook2.com
209.47.87.244	A	hook2.com