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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) | 227.4M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 217.9M | 25,247 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,322 |
| 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.
32,189 autonomous systems registered to United States. Click an AS for detail.
| 72.9M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,901 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.9M | 2,010 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.5M | 4,222 |
| 3.8K |
| 73.7K |
| 13 |
| AS22807US | CINEMARK-US - CINEMARK USA, INC | 3.8K | — | 15 |
| AS54027US | SEATTLE-PUBLIC-SCHOOLS - Seattle Public Schools | 3.8K | — | 6 |
| AS40498US | ABQG - New Mexico Lambda Rail, Inc. | 3.8K | 65.5K | 13 |
| AS18919US | STT-GLOBAL - smartTrade Technologies | 3.8K | — | 15 |
| AS36071US | T1COMPANY - The T-1 Company, LLC | 3.8K | — | 7 |
| AS18773US | HENRICO-AS - County of Henrico | 3.8K | — | 15 |
| AS1689US | ANS-1689-AS - Verizon Business | 3.8K | — | 15 |
| AS14313US | DATABANK-ZCOLO - zColo | 3.8K | — | 7 |
| AS21658US | CHAMELEON-LABS - Chameleon Labs LLC | 3.8K | 4.1K | 10 |
| AS26925US | SMART-CITY-DCCC - SMART CITY NETWORKS, LIMITED PARTNERSHIP | 3.8K | — | 4 |
| AS33662US | CMCS - Comcast Cable Communications, LLC | 3.8K | 105 | 120 |
| AS23492US | NEZPERCETRIBE - Nez Perce Tribe | 3.8K | — | 15 |
| AS211936US | RD-UK Rackdog, LLC | 3.8K | — | 8 |
| AS26306US | THE-KARCHER-GROUP - The Karcher Group Inc. | 3.8K | — | 9 |
| AS396919US | SHADOW - Shadow | 3.8K | 48 | 11 |
| AS36530US | FUTURE-LAIN - IDC Cube | 3.8K | 278 | 31 |
| AS14144US | ADMIN-ON-DEMAND-LLC - Admin on Demand, LLC | 3.8K | — | 9 |
| AS395088US | CONVERGIA-US - Convergia, inc | 3.8K | — | 14 |
| AS23317US | WHITMANCOLLEGE - Whitman College | 3.8K | — | 4 |
| AS395153US | RACKTOPIA - Racktopia Inc. | 3.8K | 1 | 16 |
| AS19265US | MHS-MMC-2401 - Memorial Medical Center | 3.8K | — | 15 |
| AS26485US | IHG-ASN - Six Continents Hotels, Inc. | 3.8K | — | 15 |
| AS22299US | GCRONLINE - GCR Company/GCR Online | 3.8K | 2 | 17 |
| AS26946US | KIRKWOOD-COMMUNTIY-COLLEGE - Kirkwood Community College | 3.8K | — | 10 |
| AS1904US | DNIC-AS-01904 - United States Department of Defense (DoD) | 3.8K | — | 7 |
| AS23400US | SDC - Software Design Corporation | 3.8K | — | 15 |
| AS1449US | PAYPAL-CORP - PayPal, Inc. | 3.8K | — | 15 |
| AS62537US | SLINC - Sauce Labs Inc | 3.8K | — | 9 |
| AS394034US | BROOKLYN-FIBER - Brooklyn Fiber | 3.8K | 65.5K | 11 |
| AS50979US | R95-LV ROUTE 95 LLC | 3.8K | 131.1K | 10 |
| AS393784US | EXP-ASHVA2015 - Experian | 3.8K | — | 8 |
| AS30215US | AS-CISCOHPS-APAC - Cisco Systems Ironport Division | 3.8K | 2 | 17 |
| AS14969US | JANE-STREET - JANE STREET | 3.8K | — | 14 |
| AS398875US | PUBLIC-SAFETY - The City of New York | 3.8K | 15 | 18 |
| AS27006US | IMPACTBUSINESS - Impact Business Solutions | 3.8K | 65.5K | 6 |
| AS26190US | SENTRY - Sentry Insurance a Mutual Company | 3.8K | — | 9 |
| AS398580US | QUEENS-UNIV-CLT-01 - Queens University of Charlotte | 3.8K | — | 8 |
| AS399521US | BNS - BNS | 3.8K | 65.5K | 15 |
| AS12069US | REV-NET-TECHNOLOGIES - Rev.Net Technologies | 3.8K | — | 15 |
| AS47272US | HYEHOST - HYEHOST LLC | 3.8K | 21.5K | 36 |
| AS26863US | GAMESERVERKINGS - Gameserverkings | 3.8K | — | 15 |
| AS33226US | SUMMAHEALTH-ASN - Summa Health System | 3.8K | — | 5 |
| AS1002US | BYTEFILTER-AS - Bytefilter LLC | 3.8K | — | 12 |
| AS46873US | HOSTCOLOR - Host Color | 3.8K | — | 15 |
| AS27640US | GIGASNET-AS - GIGAS HOSTING USA, LLC | 3.8K | — | 5 |
| AS1008US | GANJINGWORLD - GANJINGWORLD CORPORATION | 3.8K | 2 | 17 |