NBCUniversal
AS54040 (NBCUN-5) announces at least three prefixes:
50.234.250.0/24
Comcast Cable Communications, LLC
about a second ago
NET-50-128-0-0-1
50.128.0.0-50.255.255.255
204.237.131.0/24
PacketExchange, Inc
NET-204-237-128-0-1
204.237.128.0-204.237.255.255
216.39.34.0/23
CenturyLink Communications, LLC
NET-216-39-32-0-1
216.39.32.0-216.39.47.255
0