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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,666 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) |
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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 234 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,491 |
| 3.8K |
| 5 |
| 20 |
| AS54221US | PC-INTERNET - PATHFINDERS USA INC. | 3.8K | — | 12 |
| AS27640US | GIGASNET-AS - GIGAS HOSTING USA, LLC | 3.8K | — | 5 |
| AS395088US | CONVERGIA-US - Convergia, inc | 3.8K | — | 14 |
| AS40475US | APPLIEDOPS - Applied Operations, LLC | 3.8K | 65.5K | 7 |
| AS394034US | BROOKLYN-FIBER - Brooklyn Fiber | 3.8K | 65.5K | 11 |
| AS26306US | THE-KARCHER-GROUP - The Karcher Group Inc. | 3.8K | — | 9 |
| AS50979US | R95-LV ROUTE 95 LLC | 3.8K | 131.1K | 10 |
| AS23317US | WHITMANCOLLEGE - Whitman College | 3.8K | — | 4 |
| AS396919US | SHADOW - Shadow | 3.8K | 48 | 11 |
| AS46873US | HOSTCOLOR - Host Color | 3.8K | — | 15 |
| AS23400US | SDC - Software Design Corporation | 3.8K | — | 15 |
| AS1002US | BYTEFILTER-AS - Bytefilter LLC | 3.8K | — | 12 |
| AS30215US | AS-CISCOHPS-APAC - Cisco Systems Ironport Division | 3.8K | 2 | 17 |
| AS393784US | EXP-ASHVA2015 - Experian | 3.8K | — | 8 |
| AS26863US | GAMESERVERKINGS - Gameserverkings | 3.8K | — | 15 |
| AS398580US | QUEENS-UNIV-CLT-01 - Queens University of Charlotte | 3.8K | — | 8 |
| AS14969US | JANE-STREET - JANE STREET | 3.8K | — | 14 |
| AS26946US | KIRKWOOD-COMMUNTIY-COLLEGE - Kirkwood Community College | 3.8K | — | 10 |
| AS400322US | NGTEL - NGTel | 3.8K | — | 4 |
| AS14144US | ADMIN-ON-DEMAND-LLC - Admin on Demand, LLC | 3.8K | — | 9 |
| AS399521US | BNS - BNS | 3.8K | 65.5K | 15 |
| AS26190US | SENTRY - Sentry Insurance a Mutual Company | 3.8K | — | 9 |
| AS395153US | RACKTOPIA - Racktopia Inc. | 3.8K | 1 | 16 |
| AS30350US | REGION7-ESC - Region VII Education Service Center | 3.8K | 65.5K | 5 |
| AS399918US | SYLUTIL - Utilities Board of the City of Sylacauga | 3.8K | 65.5K | 8 |
| AS16958US | BCIU-22 - Bucks County Intermediate Unit #22 | 3.8K | 256 | 9 |
| AS395693US | TEGNA-QTS-EAST - TEGNA Inc. | 3.8K | — | 14 |
| AS1286US | IVAS01 - Altay Corporation | 3.8K | — | 14 |
| AS18694US | SDWARREN - Sappi Fine Paper North America | 3.8K | 257 | 6 |
| AS54326US | MNIS1782 - McCookNet Internet Service | 3.8K | — | 13 |
| AS14990US | AVNET-NA - Avnet Inc. | 3.8K | — | 10 |
| AS209699US | COAXIAL Coaxial Cable LLC | 3.8K | 19 | 14 |
| AS397027US | BLOCK-LINE-DENVER - Block Line Systems, LLC | 3.8K | — | 9 |
| AS976US | CORENET - CoreNET Inc. | 3.8K | 9 | 21 |
| AS197769US | VPSDEDICATED-AS VPS Dedicated LLC | 3.8K | — | 10 |
| AS18593US | GSHULLGR - The Goldman Sachs Group, Inc. | 3.8K | — | 15 |
| AS19239US | KLA - KLA Corporation | 3.8K | — | 15 |
| AS11471US | NSBPK - New Source Broadband | 3.8K | — | 15 |
| AS7809US | SYNOPSYS - Synopsys Inc. | 3.8K | — | 11 |
| AS13630US | CSXT-AS-1 - CSX Technology | 3.8K | — | 8 |
| AS40428US | PANDORA-EQX-SJL - Pandora Media, LLC | 3.8K | 5 | 18 |
| AS14734US | NEONET-HEARTLAND - Northeast Ohio Network for Educational Technology | 3.8K | — | 8 |
| AS10655US | BUREAU-NAT-AFF - BLOOMBERG INDUSTRY GROUP | 3.8K | — | 15 |
| AS11135US | CROSS-DEVELOPMENT-MONTGOMERY - Cross Development/Montgomery LP | 3.8K | — | 8 |
| AS54523US | WSTC - WSTC | 3.8K | — | 9 |
| AS6109US | NDCHEALTH - NDCHealth Corporation | 3.8K | — | 14 |