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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 |
| AS393663US | ACUMENT - Acument Global Technologies, Inc. | 512 | — | 2 |
| AS20353US | ADAGE-CAPITAL---ASN - Adage Capital Partners, LLC | 512 | — | 2 |
| AS20145US | FCS - FLORIDA CANCER SPECIALISTS, P.L. | 512 | — | 2 |
| AS14512US | BENTLEY-AS - Bentley University | 512 | — | 1 |
| AS53836US | NGX-ASN02 - NGX Networks | 512 | — | 2 |
| AS32280US | THE-EWSCRIPPS - The E.W. Scripps Company | 512 | — | 2 |
| AS394610US | INCOMM-NET2 - InComm | 512 | — | 2 |
| AS5860US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | 512 | — | 2 |
| AS17361US | AUTO-AS17363 - Automated Securities Clearance LLC | 512 | — | 2 |
| AS396456US | THEMAC-1891 - Multnomah Athletic Club | 512 | — | 2 |
| AS62973US | CATAWBAVALLEYMC - Catawba Valley Medical Center | 512 | — | 2 |
| AS400249US | OC-SANITATION - Orange County Sanitation District | 512 | — | 2 |
| AS29928US | EDATA - LexisNexis Risk Data Management Inc. | 512 | — | 1 |
| AS54208US | IRELL - IRELL AND MANELLA LLP | 512 | — | 2 |
| AS394735US | TABUSH - Tabush Consulting Group, Inc. | 512 | — | 1 |
| AS400234US | AFMC-1 - Arkansas Foundation for Medical Care, Inc. | 512 | — | 2 |
| AS53541US | PRODEGE-MME - Prodege LLC | 512 | — | 2 |
| AS32438US | GRO-UCFUSM-1N - Michigan State University Federal Credit Union | 512 | — | 2 |
| AS63056US | HOOPESTON-AREA-SCHOOLS - Hoopeston Area Schools | 512 | 1 | 3 |
| AS54532US | AAA-NE-PVD-01 - AAA Northeast | 512 | — | 2 |
| AS393925US | SAMUEL-A-RAMIREZ-AS - Samuel A. Ramirez & Company, Inc | 512 | — | 2 |
| AS394247US | VOIPIA-INC - Voipia Networks Inc | 512 | — | 2 |
| AS30690US | KAZEHANA-NETWORKS - Kazehana Networks LLC | 512 | 7 | 9 |
| AS63467US | PADI-WW - PADI Worldwide Corp | 512 | — | 2 |
| AS53839US | AS-EPSILON - Epsilon, Inc. | 512 | — | 2 |
| AS50075US | zayocloud-de Zayo Group, LLC | 512 | — | 2 |
| AS402461US | KYRO-123 - KyroTelecom | 512 | — | 2 |
| AS400770US | RCPS-SBO - City of Radford | 512 | — | 2 |
| AS397742US | NUVISION-TECHNOLOGIES-INC - NUVISION TECHNOLOGIES | 512 | — | 2 |
| AS53434US | SRI-INTERNATIONAL-PRINCETON - SRI International | 512 | — | 1 |
| AS401967US | EDGE-1 - Edge Internet Services, Inc. | 512 | — | 1 |
| AS20320US | EVENLINK - Evenlink | 512 | — | 1 |
| AS394294US | OTC-AS - Oriental Trading Company, Inc. | 512 | — | 2 |
| AS396846US | FL-WIFI-01 - Florida Wifi, LLC | 512 | — | 2 |
| AS29711US | CENTURA-HEALTH - Centura Health Corporation | 512 | — | 2 |
| AS16548US | EAST-PENN-MANUFACTURING - East Penn Manufacturing | 512 | — | 2 |
| AS32727US | SB - SB Professional Services | 512 | — | 2 |
| AS62711US | MAXWELL - Maxwell Telecom LLC | 512 | — | 2 |
| AS399028US | MEADO-ASN-01 - Meadowbrook, Inc. | 512 | — | 2 |
| AS393300US | TCC-INTERNET1 - The Cato Corporation | 512 | — | 2 |
| AS401062US | MD-HAGERSTOWN-COMMUNITY-COLLEGE-01 - Hagerstown Community College | 512 | — | 1 |
| AS396033US | BFDX515 - BioFire Diagnostics, LLC | 512 | — | 2 |
| AS136899US | PHOENIXNAP-AS-SG3 - PhoenixNAP | 512 | 257 | 4 |
| AS14345US | AFS-8 - AMERIPRISE FINANCIAL SERVICES, LLC | 512 | — | 1 |
| AS400913US | COMARCH-NET-US-2-PHX - Comarch Inc | 512 | — | 2 |
| AS22229US | WORLDPAC - WORLDPAC INC. | 512 | — | 2 |