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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
APNIC-measured end-user deployment.
Clean prefixes (valid RPKI + IRR, no mismatch).
Cumulative IPv4, IPv6, and ASN allocations to United States over time.
The largest autonomous systems registered to United States by IPv4 footprint.
| AS | Holder | IPv4 | Prefixes |
|---|---|---|---|
| AS749US | DNIC-AS-00749 - United States Department of Defense (DoD) | 227.7M | 3,136 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 210.5M | 20,695 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) | 73.1M | 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC |
United States against its land-border neighbours on IPv4, IPv6, AS numbers and per-capita density.
Share of announced address space covered by valid Route Origin Authorizations.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 68.2M |
| 345 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 66.4M | 1,107 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 47.9M | 3,573 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,926 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.2M | 4,508 |
| 157.2K |
| — |
| 95 |
| AS6US | BULL-HN - ATOS IT Solutions and Services, Inc. | 156.7K | — | 31 |
| AS46687US | MAXXSOUTH-BROADBAND - BCI Mississippi Broadband,LLC | 156.4K | 67.1K | 307 |
| AS46475US | LIMESTONENETWORKS - Limestone Networks, Inc. | 153.9K | 65.6K | 268 |
| AS26077US | NEXTLINK-TEXAS - Nextlink Broadband | 153.3K | 16.4K | 281 |
| AS399US | AFCONC-BLOCK1-AS - Air Force Systems Networking | 152.8K | — | 8 |
| AS10599US | MCKESSON - McKesson Corp. | 152.8K | — | 18 |
| AS5696US | EXPRES - Express Scripts Incorporated | 152.3K | — | 45 |
| AS11857US | AEGONUSA - Money Services, Inc. | 152.1K | — | 58 |
| AS30633US | LEASEWEB-USA-WDC - Leaseweb USA, Inc. | 152.1K | 3.4M | 129 |
| AS13371US | DUKE-INTERCHANGE - Duke University | 151.8K | 3 | 7 |
| AS26658US | HENGTONG-IDC-LLC - HT | 151.8K | — | 101 |
| AS154395US | RACKDOGLLC-AS-AP - Rackdog LLC | 151K | — | 590 |
| AS103US | NWU-AS - Northwestern University | 151K | 128 | 29 |
| AS362US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 150.5K | 256 | 60 |
| AS3582US | UONET - University of Oregon | 149.5K | 65.5K | 7 |
| AS4190US | BINGHAMTON-U - Binghamton University | 149.5K | 1 | 21 |
| AS1649US | DNIC-AS-01649 - Headquarters, USAISC | 149.5K | 1 | 61 |
| AS20426US | PWC-AS - PriceWaterhouseCoopers, LLP | 149.2K | — | 18 |
| AS116US | TELCORDIA - Ericsson Inc. | 149K | — | 29 |
| AS1312US | VA-TECH-AS - Virginia Polytechnic Institute and State Univ. | 148.2K | 275 | 11 |
| AS20012US | CHILLER-CITY - Interworks Networking Services | 147.7K | — | 77 |
| AS54177US | ASN-SJFC - St. John Fisher College | 147.5K | 1 | 8 |
| AS11481US | AS-UTRGV - University of Texas Rio Grande Valley | 147.2K | 1 | 16 |
| AS14492US | DATAPIPE - DataPipe, Inc. | 146.9K | 65.5K | 24 |
| AS16787US | CHARTER-16787-DC - Charter Communications LLC | 146.7K | 1.1M | 88 |
| AS5742US | CCINET - Fidium | 146.7K | 65.5K | 106 |
| AS62642US | BIGLEAF - Bigleaf Networks, Inc. | 146.7K | — | 323 |
| AS747US | DNIC-AS-00747 - Headquarters, USAISC | 145.7K | 1 | 46 |
| AS26854US | NYS - New York State | 145.4K | — | 20 |
| AS369US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 145.4K | 256 | 56 |
| AS5080US | ARAMCO-AS - Aramco | 145.4K | 1 | 27 |
| AS3147US | US-BANCORP - U.S. BANCORP | 145.2K | 4 | 28 |
| AS11685US | HNBCOL-AS - Huntington National Bank | 145.2K | — | 32 |
| AS23314US | ORLANDOTELCO - Summit Broadband | 145.2K | 65.5K | 184 |
| AS3734US | SCCO - Santa Clara County Office of Education | 143.9K | — | 15 |
| AS3456US | TWC-3456-IT - Charter Communications Inc | 142.8K | 8.2K | 16 |
| AS19229US | IFOXNETODPD-ENSONO-DCCS - Ensono LP | 142.6K | 131.1K | 149 |
| AS22612US | NAMECHEAP-NET - Namecheap, Inc. | 141.7K | 65.6K | 334 |
| AS18450US | WEBNX - WebNX, Inc. | 141.6K | 84K | 163 |
| AS30029US | DOBSONTECHTTS - Dobson Technologies - Transport and Telecom Solutions, LLC | 141.3K | 65.5K | 39 |
| AS33132US | CROWNCASTLE-AS33132 - Crown Castle Fiber LLC | 140.5K | 65.8K | 75 |
| AS20214US | COMCAST-20214 - Comcast Cable Communications, LLC | 140.5K | 101 | 123 |
| AS11870US | ALTICOR-INC - ALTICOR INC | 140.5K | — | 27 |
| AS293US | ESNET - ESnet | 140.3K | 65.5K | 27 |
| AS30710US | SPECT-19-AS - Spectrum Health | 140.3K | — | 8 |
| AS7849US | APC-CC - RingSquared CC | 140.3K | — | 12 |