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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 |
| 1K |
| 1 |
| 3 |
| AS47071US | CHR-SOLUTIONS - CHR SOLUTIONS INC | 1K | — | 4 |
| AS32509US | SEDGWICK-COUNTY-AS - Sedgwick County Information Services | 1K | — | 1 |
| AS394241US | CUSD186 - Murphysboro Community Unit School District No. 186 | 1K | — | 4 |
| AS21895US | NYLS-AS - New York Law School | 1K | — | 4 |
| AS21666US | OSF-ASN-01 - OSF Healthcare System | 1K | — | 4 |
| AS8084US | WOLVERINE-EXECUTIONS-SERVICES - Wolverine Execution Services, LLC | 1K | — | 4 |
| AS36392US | SMART-CITY-VBCC - SMART CITY NETWORKS, LIMITED PARTNERSHIP | 1K | — | 3 |
| AS21586US | SWKO - SWKO - SouthWest Kansas Online | 1K | — | 4 |
| AS397751US | JAMESAVERY - JAMES AVERY CRAFTSMAN INC | 1K | — | 4 |
| AS397965US | COUNTY-OF-TRAVIS-1 - Travis County, Texas | 1K | — | 4 |
| AS22821US | AIPSO-COM - AIPSO | 1K | — | 1 |
| AS401458US | IQVIA-DURHAM-6B - IQVIA Holdings Inc | 1K | — | 1 |
| AS396995US | BGP - Morris Hospital | 1K | — | 3 |
| AS1605US | ALGT-HQNET - Allegiant Travel Company | 1K | — | 4 |
| AS31789US | ICON-TECHNOLOGIES - ICON Technologies Inc. | 1K | — | 4 |
| AS10406US | ASN-TEKTRONIX - Tektronix, Inc. | 1K | — | 4 |
| AS17206US | MOUNTAIN-AMERICA - Mountain America Credit Union | 1K | — | 4 |
| AS25617US | SMITHNEPHEW - Smith and Nephew, Inc. | 1K | — | 4 |
| AS20332US | WINCHESTER-WIRELESS - Winchester Wireless | 1K | — | 1 |
| AS399156US | SECURITYSERVICES - Vercara, LLC | 1K | — | 2 |
| AS19826US | UHS-088 - UNIVERSAL HEALTH SERVICES | 1K | — | 4 |
| AS394899US | HCDL-MINNEAPOLIS-DATA-CENTER - H5 Data Centers | 1K | 256 | 5 |
| AS394902US | HCDL-PORTLAND-DATA-CENTER - H5 Data Centers | 1K | 256 | 5 |
| AS401118US | S1-COMMUNICATION - S1 | 1K | — | 3 |
| AS46559US | 3XNET - ZGX US LLC | 1K | 1 | 5 |
| AS393833US | OUTBACKINTERNET - Outback Internet | 1K | — | 3 |
| AS46729US | SAINTLEOUNIVERSITY - Saint Leo University Incorporated | 1K | — | 2 |
| AS400931US | ROCKOAK-ASN - Rock Oak, LLC | 1K | — | 3 |
| AS53315US | NEXUSIS - Nexus IS | 1K | — | 1 |
| AS394080US | TENERUM-AS - Tenerum, LLC | 1K | — | 4 |
| AS26424US | WINTECIND - Wintec Industries, Inc. | 1K | — | 3 |
| AS22101US | CPIL-ASN - Cyber Point International, LLC | 1K | — | 4 |
| AS46488US | BLS-BROADBAND-ASN1 - BLS Broadband | 1K | 256 | 5 |
| AS17340US | EO-1 - EmailOversight, Inc. | 1K | — | 4 |
| AS393464US | ALLCONNECTED - ALLCONNECTED, INC. | 1K | — | 2 |
| AS399552US | PATHWAYZ-DFW - Pathwayz Riverside LLC | 1K | — | 3 |
| AS19317US | BLUESKY-SOCIAL-PBC-1 - Bluesky Social, PBC | 1K | — | 4 |
| AS11222US | PRL - Ralph Lauren Corporation | 1K | — | 4 |
| AS13461US | OCC-AS13461 - The Options Clearing Corporation | 1K | — | 4 |
| AS394729US | NPIASN - NeoPollard Interactive LLC | 1K | — | 4 |
| AS401026US | IMDC-EMEA - Iron Mountain Data Center | 1K | 257 | 6 |
| AS25623US | CISN2 - TowardEX Technologies International, Inc. | 1K | 65.8K | 8 |
| AS394759US | TWIN-EAGLE-RESOURCE-MANAGEMENT-LLC - TWIN EAGLE RESOURCE MANAGEMENT, LLC | 1K | — | 3 |
| AS14771US | CITCO-ASN-1 - Citco Technology Management, Inc. | 1K | — | 4 |
| AS397304US | MTOR1-MEDIA-566 - MediaNet, Inc | 1K | — | 3 |
| AS13324US | EPC-INC - Executive Personal Computers Inc. | 1K | — | 2 |