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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 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 | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| 256 |
| — |
| 1 |
| AS26939US | NRNET - NeoRoute Networks LLC | 256 | 4.1K | 3 |
| AS393726US | ASGN - On Assignment, Inc. | 256 | — | 1 |
| AS11823US | LORDABBETTCO - Lord, Abbett & Co. | 256 | — | 1 |
| AS398147US | COLLEGEOFTHEMAINLAND-1 - College of the Mainland | 256 | — | 1 |
| AS13583US | AIP-AS13583 - Allstate Identity Protection | 256 | — | 1 |
| AS397516US | GO-DADDY-COM-LLC - GoDaddy.com, LLC | 256 | 1 | 2 |
| AS398567US | LIGHTING-READY-HOSTING-LLC - Lightning Ready Hosting, LLC | 256 | — | 1 |
| AS32119US | WESLEYAN-SCHOOL - Wesleyan School, Inc. | 256 | 256 | 2 |
| AS53514US | UHQ - UHQ Services LLC | 256 | 1 | 2 |
| AS401270US | TVH-PARTS-US - TVH Parts Co. | 256 | — | 1 |
| AS393538US | ARLP-OPSTECH - Alliance Coal, LLC | 256 | — | 1 |
| AS19543US | MINTZ-BOS - Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C. | 256 | — | 1 |
| AS54619US | GHCSCW - GROUP HEALTH COOPERATIVE OF SOUTH CENTRAL WISCONSIN | 256 | — | 1 |
| AS394315US | WYNN-EVERETT-MASS - Wynn Resorts Limited | 256 | — | 1 |
| AS20389US | 20389 - OneAZ Credit Union | 256 | — | 1 |
| AS30628US | SRC-AUTOMOTIVE-INC - SRC Automotive Inc. | 256 | — | 1 |
| AS18698US | IAC-NYC-AS01 - Icahn Associates Corp. | 256 | — | 1 |
| AS25614US | TJM-ASNUMBER - TJM Institutional Services, LLC. | 256 | — | 1 |
| AS399311US | FRONTIER-CORP - Frontier Networks Corp | 256 | — | 1 |
| AS26558US | FREEWHEEL - Freewheel Media Inc. | 256 | — | 1 |
| AS23512US | RGTS-SJ - ConvergeOne Unified Technology Solutions, Inc. | 256 | — | 1 |
| AS25834US | LAYNE-ASN-1 - Layne Christensen Company | 256 | — | 1 |
| AS27412US | NCHE - American Council on Education | 256 | — | 1 |
| AS398233US | RURALREACH-01 - IVSComm, Inc | 256 | — | 1 |
| AS397001US | CSISD - College Station Independent School District | 256 | — | 1 |
| AS397322US | FORWARD-THINKING - Forward Thinking Systems LLC | 256 | — | 1 |
| AS13714US | AS-AFILIAS-SYD1 - Afilias, Inc. | 256 | — | 1 |
| AS62812US | THENATUREORG-1 - The Nature Conservancy | 256 | — | 1 |
| AS395384US | MUFSD-1 - Massapequa Union Free School District | 256 | — | 1 |
| AS396069US | NBC-64-ASN1 - Nazarene Bible College | 256 | 1 | 2 |
| AS40521US | BLUEFIN-TRADING - Bluefin Trading, LLC | 256 | — | 1 |
| AS401127US | TFBCI-WACO - Texas Farm Bureau Casualty Insurance Company | 256 | — | 1 |
| AS40167US | SCHIFFRINBARROWAY - Schiffrin & Barroway, LLP | 256 | — | 1 |
| AS54089US | OPTECH - Operational Technologies Corporation | 256 | — | 1 |
| AS16914US | MBHARCH - MBH ARCHITECTS | 256 | — | 1 |
| AS395396US | AAH-OAHU - Alert Alarm Hawaii | 256 | — | 1 |
| AS394756US | CONVO-DAL - Convo | 256 | — | 1 |
| AS400323US | NEXTITLE - NexTitle | 256 | — | 1 |
| AS400713US | MAXIM-STAFFING - Amergis Healthcare Staffing, Inc. | 256 | — | 1 |
| AS36835US | NMF4L-1500 - Nugget Market | 256 | — | 1 |
| AS393782US | EJ - EJ Group Incorporated | 256 | — | 1 |
| AS396015US | CRESTLINE-NETWORKS - Crestline Networks | 256 | 18 | 4 |
| AS399338US | CENTRAL-VALLEY-INTERNET - Central Valley Internet LLC | 256 | 4.1K | 2 |
| AS393389US | ECLIPSE COMMUNICATIONS - Eclipse Communications | 256 | — | 1 |
| AS26823US | INTERCEPT1 - First International Bank & Trust | 256 | — | 1 |
| AS402428US | ITSUMIKU-AS-INTL1 - Itsumiku | 256 | — | 1 |