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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) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.1M | 24,635 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,220 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,003 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,360 |
| 256 |
| — |
| 1 |
| AS398235US | BLUE-LOBSTER - Blue Lobster Inc. | 256 | — | 1 |
| AS40642US | IWU-2017-01 - ILLINOIS WESLEYAN UNIVERSITY | 256 | — | 1 |
| AS5081US | CCS-AS - CLARE COMPUTER SOLUTIONS | 256 | 1 | 2 |
| AS395314US | AECC-SANJUANPOOLS-ASN - American Environmental Container Corp. | 256 | 256 | 2 |
| AS396267US | TAFT-STETTINIUS-HOLLISTER - Taft, Stettinius & Hollister, LLP | 256 | — | 1 |
| AS398199US | AMS-DUH-NC - HEWLETT PACKARD ENTERPRISE COMPANY | 256 | — | 1 |
| AS20438US | AS-STOO-HQ - Stoo Networks LLC | 256 | — | 1 |
| AS400545US | CYGNUS-COMMUNICATIONS - Cygnus Communications | 256 | — | 1 |
| AS54656US | CALWATER - California Water Service Company | 256 | — | 1 |
| AS393364US | STARWOOD-NYC-417FIFTH - Marriott International, Inc. | 256 | — | 1 |
| AS63189US | ANDESASERVICESINC - Andesa Services, Inc | 256 | — | 1 |
| AS19503US | NYMAGDIA-LT-CL - Magnetar Capital LLC | 256 | 1 | 2 |
| AS11926US | HARTSOFTWARE - Hart Software, Inc. | 256 | — | 1 |
| AS400340US | MATSON-NAV - Matson Navigation Company, Inc. | 256 | — | 1 |
| AS40743US | CJPIA-ASN1 - California Joint Powers Insurance Authority | 256 | — | 1 |
| AS394442US | PCBF-NYC1 - Pearl Capital Business Funding LLC | 256 | — | 1 |
| AS13858US | CPG-ASN2 - TransCanada Pipelines Limited | 256 | — | 1 |
| AS17053US | ACCEL-COMM - Accel Communications LLC | 256 | 4.1K | 2 |
| AS25788US | CPL-AS - Centerview Partners, LLC | 256 | — | 1 |
| AS23478US | CHAS-HEALTH - CHAS Health | 256 | — | 1 |
| AS40737US | EMFINC-ASN1 - EMF Inc. | 256 | — | 1 |
| AS397967US | CIRI-HQ-01 - Cook Inlet Region, Inc. | 256 | — | 1 |
| AS22180US | PRECISION-IT - PRECISION TECHNOLOGY, INC. | 256 | — | 1 |
| AS32788US | C75-NETWORKS - Coloblox Data Centers Inc | 256 | — | 1 |
| AS11378US | SRLLP - Stoel Rives LLP | 256 | — | 1 |
| AS11036US | AVISPL - Signal Perfection, Ltd., Inc. | 256 | — | 1 |
| AS40713US | OCI-01 - Orbiting Code, Inc. | 256 | 4.1K | 2 |
| AS30156US | BDG-TECHNOLOGIES - BDG Technologies LLC | 256 | — | 1 |
| AS62510US | NESATX - North East Independent School District | 256 | — | 1 |
| AS393992US | TOWNOFBROOKHAVEN - Town of Brookhaven | 256 | — | 1 |
| AS399387US | DIGITECH-COMPUTER-LLC - Digitech Computer LLC | 256 | — | 1 |
| AS21611US | NET-WSGWIN - Wilson Sporting Goods Co. | 256 | — | 1 |
| AS397291US | LOGICMONITOR-CORPORATE - LogicMonitor, Inc. | 256 | — | 1 |
| AS402287US | PGAL-BGP - PGAL | 256 | — | 1 |
| AS26336US | TFHD-INTERNET1 - Tahoe Forest Hospital District | 256 | — | 1 |
| AS396898US | BMG-ASN - Capital City Home Loans | 256 | — | 1 |
| AS40055US | THE-DOUGLAS-STEWART-COMPANY - THE DOUGLAS STEWART COMPANY | 256 | — | 1 |
| AS53331US | IMPERIAL-CAPITAL-GROUP-LLC - Imperial Capital Group LLC | 256 | — | 1 |
| AS397675US | ASD-WHP-BLOCK - Armstrong School District | 256 | — | 1 |
| AS32124US | CONTINENTALMILLS-EXT - CONTINENTAL MILLS | 256 | — | 1 |
| AS21751US | OWL-CREEK-ASSET-MANAGEMENT - Owl Creek Asset Management, L.P. | 256 | — | 1 |
| AS401751US | FMH-NET - Farmers Mutual Hail Insurance Company of Iowa | 256 | — | 1 |
| AS11304US | BMH-ASN - Prisma Health | 256 | — | 1 |
| AS62677US | WFASN - William Floyd Union Free School District | 256 | — | 1 |
| AS197137US | YUNHU-NETWORKS-LLC YUNHU NETWORKS LLC | 256 | 4 | 5 |
| AS398881US | SFG-199-33-226 - SFG, LLC | 256 | — | 1 |