Robtex

Up: 208.80.156.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 208.80.156.0/25
Down right: 208.80.156.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
208.80.156.6	A+PTR	smtp.telna.com
208.80.156.185	A	telecomnorthamerica.com
208.80.156.185	A	mail.telna.com
208.80.156.185	A	ny.telna.com
208.80.156.201	A+PTR	web.telna.com
208.80.156.204	PTR	www.telna.com
208.80.156.213	A	www.telnamobile.com
208.80.156.213	A	*.telnamobile.com
208.80.156.214	A	telna.ws
208.80.156.216	A	simtoolbox.com
208.80.156.216	A	simadmin.net
208.80.156.218	A	empowerfour.com
208.80.156.219	A	openroamer.com
208.80.156.238	A	piranhavoip.net
208.80.156.238	A	voipcomms.net
208.80.156.238	A	ramilevy.net
208.80.156.254	A	santain.com