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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. | 218.2M | 25,766 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,308 |
| 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.
32,243 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| 512 |
| — |
| 1 |
| AS4900US | ASN1 - Montgomery County Hospital District | 512 | — | 2 |
| AS25729US | CITY-OF-IRVING - City of Irving | 512 | — | 2 |
| AS11379US | WHG11379 - Wyndham Hotel Group, LLC | 512 | — | 2 |
| AS54496US | JFBC-AS - Johnson Ferry Baptist Church, Inc. | 512 | 2 | 4 |
| AS26176US | AJA - AJA Video Systems, Inc. | 512 | — | 2 |
| AS46567US | BORDER-STATES-INDUSTRIES - Border States Industries | 512 | — | 2 |
| AS35909US | ERGOS-TECHNOLOGY - ERGOS Technology Partners | 512 | — | 1 |
| AS33402US | BULLITT-COMMUNICATIONS - Bullitt Communications | 512 | 4.1K | 2 |
| AS40288US | CFCU-AS - CONGRESSIONAL FEDERAL CREDIT UNION | 512 | — | 2 |
| AS62520US | EMASON-ASN - eMASON, Inc | 512 | — | 2 |
| AS30252US | BMCD-US - BURNS & MCDONNELL, INC. | 512 | — | 2 |
| AS20373US | MARLEYINDEX-US - Marley Index, LLC | 512 | 3 | 5 |
| AS399090US | GINKGOBIOWORKS - Ginkgo Bioworks, Inc. | 512 | — | 2 |
| AS17033US | CSL-ASN-AS17033 - CSL Behring L.L.C | 512 | — | 2 |
| AS62966US | AS-BRIGHTEDGE-COM - BrightEdge Technologies | 512 | — | 1 |
| AS33012US | VERTEX-RESEARCH-GROUP - Vertex Research Group, Inc. | 512 | — | 2 |
| AS40467US | CREDORAX-ARIN1 - Credorax (USA) Inc. | 512 | — | 2 |
| AS393579US | LEE-MEMORIAL-HEALTH-SYSTEM - Lee Memorial Health System | 512 | — | 2 |
| AS398048US | THR - THERMOS L.L.C. | 512 | — | 2 |
| AS36102US | PFS - State Street Bank and Trust Company | 512 | — | 2 |
| AS14999US | USERWORLD - Userworld, INC | 512 | — | 2 |
| AS36769US | WGAL-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS22276US | BANKUNITED - BankUnited NA | 512 | — | 2 |
| AS26852US | FAFCU-BGP-01 - F&A Federal Credit Union | 512 | — | 2 |
| AS32946US | RPU-1892 - Rochester Public Utilities | 512 | — | 2 |
| AS47657US | DEVEXPERTS-AS Devexperts Inc | 512 | — | 2 |
| AS40324US | TGNA-KVUE - TEGNA Inc. | 512 | — | 2 |
| AS401859US | D3VUR - D3VUR LLC | 512 | 1 | 3 |
| AS13466US | MUZAK-AS - Muzak, LLC | 512 | — | 2 |
| AS32169US | CMENETWORKS - CME Networks, LLC | 512 | 256 | 3 |
| AS396071US | NTT-GLOBAL-DATA-CENTERS-AMERICA-INC - NTT Global Data Centers Americas, INC. | 512 | 4.1K | 2 |
| AS31973US | WPS-1765DC - Wisconsin Physicians Service Insurance Corp. | 512 | — | 2 |
| AS20364US | FIREFLY - Firefly Network LLC | 512 | — | 2 |
| AS393555US | MOIT - City of Baltimore, Mayor's Office of Information Technology | 512 | — | 2 |
| AS961US | ACHIEVE-US - Achieve Wireless Inc | 512 | 257 | 4 |
| AS32041US | UL - Underwriters Laboratories | 512 | — | 2 |
| AS394722US | NIMBIX-1 - Nimbix, Inc. | 512 | — | 1 |
| AS13671US | VRIS-AS-BLOCK - Verizon Business | 512 | — | 2 |
| AS3921US | AGNOGE - General Electric Company | 512 | — | 2 |
| AS30484US | PAHOUSEGOP - Pennsylvania House of Representatives, Republican IT Services | 512 | — | 2 |
| AS400314US | GULF-WINDS-1 - Gulf Winds Credit Union | 512 | — | 2 |
| AS399894US | TAYLORED-FMI - Taylored Services, LLC | 512 | — | 2 |
| AS11328US | BIO-RAD-ASN - Bio-Rad Laboratories, Inc. | 512 | — | 2 |
| AS36046US | BOTC - BOTC | 512 | — | 2 |
| AS396104US | KARMA-CORP-SVCS - Karma Automotive, LLC | 512 | — | 2 |
| AS401138US | MORSECOMMUNICATIONS - Morse Communications, Inc. | 512 | 2 | 4 |