Regeneron Pharmaceuticals Inc.
AS33759 (RP-30) announces at least two prefixes:
24.38.10.0/24
Cablevision Systems Corp.
about a second ago
NET-24-38-0-0-1
24.38.0.0-24.38.127.255
72.43.219.0/24
Charter Communications Inc
NET-72-43-0-0-1
72.43.0.0-72.43.255.255
0