Robtex

Up: 199.122.112.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 199.122.116.0/23
Down right: 199.122.118.0/23

IP	Type	Hostname
199.122.116.29	A+PTR	send29.elitemail.com
199.122.116.39	A+PTR	send39.elitemail.com
199.122.116.132	A	send132.elitemail.com
199.122.116.178	A+PTR	send178.elitemail.com
199.122.116.220	A+PTR	send220.elitemail.com
199.122.116.228	A	send228.elitemail.com
199.122.116.247	A	send247.elitemail.com
199.122.117.54	A+PTR	send308.elitemail.com
199.122.118.19	PTR	send527.elitemail.com
199.122.118.28	PTR	send536.elitemail.com
199.122.118.206	PTR	send714.elitemail.com
199.122.119.10	PTR	send1779.elitemail.com
199.122.119.41	PTR	send803.elitemail.com
199.122.119.63	PTR	send825.elitemail.com
199.122.119.146	PTR	send908.elitemail.com
199.122.119.225	PTR	send987.elitemail.com