Robtex

Up: 24.169.192.0/19
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Down left: 24.169.192.0/21
Down right: 24.169.200.0/21

IP	Type	Hostname
24.169.196.66	PTR	mta-24-169-196-66.rochester.rr.com
24.169.198.244	PTR	mta-24-169-198-244.rochester.rr.com
24.169.204.240	PTR	mta-24-169-204-240.rochester.rr.com
24.169.206.227	PTR	mta-24-169-206-227.rochester.rr.com