Internet Service Providers in United States

Top 20 organizations with the largest IP allocations in United States

United States

Top 20 organizations with the largest IP allocations


Rank Name IPv4 addresses IPv6 /64 networks AS numbers Prefixes
DoD Network Information Center 102,036,992 2 x 232 197 11,628
AT&T Services, Inc. 96,971,512 1.43 x 241 9 9,586
Comcast Cable Communications, LLC 72,287,744 1.04 x 245 38 2,598
4 Level 3 Communications, Inc. 68,394,280 1.72 x 239 11 9,826
5 MCI Communications Services, Inc. d/b/a Verizon Business 55,566,368 1.3 x 240 37 11,900
6 Amazon.com, Inc. 40,504,064 1.72 x 234 3 2,090
7 Charter Communications Inc 33,071,104 1.44 x 236 15 2,981
8 CenturyLink Communications, LLC 31,244,576 1.03 x 240 42 10,351
9 Cellco Partnership DBA Verizon Wireless 30,166,272 1.56 x 236 4 2,596
10 Apple Inc. 29,795,326 1.25 x 234 3 1,320
11 Cogent Communications 27,408,764 1.04 x 238 3 9,079
12 Microsoft Corporation 24,233,216 1.05 x 239 13 744
13 AT&T Global Network Services, LLC 15,826,432 234 4 888
14 Cox Communications Inc. 14,652,671 1.25 x 236 1 3,681
15 Sprint 14,576,256 1.44 x 238 4 3,649
16 Headquarters, USAISC 13,276,160 1.5 x 217 80 1,236
17 Windstream Communications LLC 12,903,424 1.44 x 236 13 2,513
18 Frontier Communications of America, Inc. 12,718,080 234 6 3,427
19 T-Mobile USA, Inc. 12,303,104 233 4 278
20 Charter Communications 12,210,432 1.02 x 238 8 1,381