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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 | 23,661 |
| 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 |
| 236 |
| 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 | 4,490 |
| 512 |
| — |
| 2 |
| AS40442US | ARCUSTECH - Arcustech, LLC | 512 | — | 2 |
| AS33529US | PWC-136-33529 - PAC Worldwide Corporation | 512 | — | 2 |
| AS31752US | HEI-30-31752 - Heartland Express, Inc. of Iowa | 512 | — | 2 |
| AS395436US | HUH-ASN-01 - Howard University Hospital | 512 | — | 2 |
| AS14939US | THRES - THRESHOLD COMMUNICATIONS,INC. | 512 | 8.2K | 4 |
| AS401998US | CIRRUS-EXT - Cirrus Guest Services | 512 | 4.4K | 4 |
| AS402248US | BOLD-AWC-HED - Apogee Telecom Inc. | 512 | — | 1 |
| AS399238US | WELLS-NV-BEEHIVE - Satview Broadband LTD | 512 | — | 2 |
| AS1642US | COLORCON - Colorcon Inc | 512 | — | 2 |
| AS27208US | DISCOVERY-ENERGY-LLC-01 - Discovery Energy, LLC | 512 | — | 2 |
| AS397401US | WILLIAM-HILL-01 - William Hill | 512 | — | 1 |
| AS35863US | TELCO214US1 - Telco 214, Inc. | 512 | — | 2 |
| AS397937US | TGNA-WTHR - TEGNA Inc. | 512 | — | 2 |
| AS16996US | TARRANTCOUNTYTX-GOV - Tarrant County | 512 | — | 2 |
| AS15228US | OREILLYMEDIA-AS1 - O'Reilly Media, Inc. | 512 | — | 1 |
| AS14945US | FMC-401NEWING-LOH - FAIRFIELD MEDICAL CENTER | 512 | — | 2 |
| AS26717US | AS-RPS - Richmond Public Schools | 512 | — | 1 |
| AS19357US | NESL - New Enterprise Stone & Lime Company | 512 | — | 2 |
| AS26824US | VLUZNET-US - VLUZNET | 512 | — | 1 |
| AS53575US | AUSTIN-COLLEGE - Austin College | 512 | — | 2 |
| AS26943US | YOUR-ORG-INC-EURO - YOUR.ORG, INC. | 512 | 65.5K | 4 |
| AS395430US | COO - City of Oakland | 512 | — | 2 |
| AS11640US | GROUP-ONE-TRADING - Group One Trading LLC | 512 | — | 2 |
| AS33318US | AS-AHC-80 - Agfa HealthCare Corporation | 512 | — | 2 |
| AS53727US | AS-PENGUIN - Penguin Networks | 512 | 37 | 9 |
| AS46605US | MGRC - MCGRATH RENTCORP | 512 | — | 2 |
| AS62507US | CHV-COH - City of Hampton, Virginia | 512 | — | 2 |
| AS13849US | BLOCKINETIC - Blockinetic LLC | 512 | 4.1K | 3 |
| AS40216US | DSTIP - DSTIP Networks LLC | 512 | 258 | 5 |
| AS64255US | EM-888 - Intercontinental Exchange, Inc. | 512 | — | 2 |
| AS22754US | GAPARTNERS-CT - General Atlantic Service Corp. | 512 | — | 2 |
| AS397273US | RENDER - Render | 512 | — | 2 |
| AS399947US | AURORA-GEO - Pacific Dataport Inc. | 512 | — | 1 |
| AS30227US | CAMBRIDGE-HEALTH-ALLIANCE - Cambridge Public Health Commission | 512 | — | 2 |
| AS40710US | CLC-98-ILLINOIS - College of Lake County | 512 | — | 2 |
| AS396323US | JCFS - Johnson Controls Federal Systems Inc. | 512 | — | 2 |
| AS394302US | IAD-COLO - Qualcomm, Inc. | 512 | 2 | 3 |
| AS27363US | FOXPITT-KELTON - Swiss Re America Holding Corporation | 512 | — | 2 |
| AS54820US | DN-TX - Diebold Nixdorf, Incorporated | 512 | — | 2 |
| AS18577US | MIC-64 - ManTech International Corporation | 512 | — | 2 |
| AS399488US | DSB - Demotte State Bank | 512 | — | 2 |
| AS40639US | KORBELINC - F Korbel & Bros Inc | 512 | — | 2 |
| AS18958US | SSI-AS-01 - THE SSI GROUP, LLC. | 512 | — | 2 |
| AS36569US | KMBC-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS398306US | CR-NETWORK-LLC - CR Network LLC | 512 | — | 1 |
| AS400480US | G12-CORE-ASN - Momentum Telecom, Inc. | 512 | — | 2 |