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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 | 24,656 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| 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.
32,202 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| 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 | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 256 |
| 65.5K |
| 2 |
| AS54366US | FCB-ASN-54366-AP - First-Citizens Bank & Trust Company | 256 | — | 1 |
| AS62837US | SMARTFIBERNETWORKS - Smart Fiber Networks | 256 | 65.5K | 2 |
| AS26886US | CLOUDOWNER-01 - cloudowner llc | 256 | 1 | 2 |
| AS62721US | AECHELON-MAIN-ROUTER - AECHELON TECHNOLOGY, INC. | 256 | — | 1 |
| AS26841US | HIDDEN-VILLA-RANCH - Hidden Villa Ranch | 256 | — | 1 |
| AS394036US | TRUJS - Truity Federal Credit Union | 256 | — | 1 |
| AS398856US | WPP-DETROIT - Group M Worldwide, LLC | 256 | — | 1 |
| AS402465US | TAHOMA-RADIOELECTRIC - Tahoma | 256 | 1 | 2 |
| AS27175US | ATNETHOST-AS02 - AtNetHost LLC | 256 | — | 1 |
| AS393292US | SKIZNET-AS-01 - SkizNet | 256 | 4.1K | 2 |
| AS393566US | INFOGENIUS-INC - InfoGenius.com, Inc | 256 | — | 1 |
| AS400628US | ACSC1005 - Automobile Club of Southern California | 256 | — | 1 |
| AS46447US | ASN1 - North American Derivatives Exchange, Inc. | 256 | — | 1 |
| AS54518US | REPUBLIC-AIRWAYS-PRIMARY - Republic Airways Holdings, Inc. | 256 | — | 1 |
| AS399913US | BMDC-01 - Advanced Logic Industries, Inc | 256 | — | 1 |
| AS397713US | ARCHULETA-INNOVATION-DESIGNS - Mt San Rafael Hospital | 256 | — | 1 |
| AS12071US | NATIONWIDECPAS-LLC - Nationwide CPAs LLC | 256 | — | 1 |
| AS399371US | KIRKLAND-ELLIS-BN - Kirkland & Ellis LLP | 256 | — | 1 |
| AS46765US | ASN1 - Liberum Capital Inc. | 256 | — | 1 |
| AS395775US | DOTHAN-CITY-01 - CITY OF DOTHAN | 256 | — | 1 |
| AS13685US | ASN-RCSD-01 - Rochester City School District | 256 | 4.1K | 2 |
| AS395837US | EIN - E-Innovations Networking Inc. | 256 | — | 1 |
| AS401414US | TIER2SQUARED - Tier 2 Squared, LLC | 256 | 256 | 2 |
| AS26627US | AS-PILOSOFT - Pilosoft, Inc. | 256 | — | 1 |
| AS64218US | LEGACY-MIDSTATE-01 - Allied | 256 | — | 1 |
| AS402212US | NICKTRONICIT - NicktronicIT LLC | 256 | 1 | 2 |
| AS397597US | RHF-ASN - RHF Investments | 256 | — | 1 |
| AS397859US | TNMINC-1 - TANIUM INC | 256 | — | 1 |
| AS397883US | HILLIARD-CITY - City of Hilliard | 256 | — | 1 |
| AS399407US | SALEM-AC-01 - Salem Academy and College | 256 | — | 1 |
| AS20190US | AS20190 - 1-800-Flowers.com, Inc. | 256 | — | 1 |
| AS23224US | ELH-AS01 - ELLIS MEDICINE | 256 | — | 1 |
| AS1073US | SCLSA-ASN-01 - South Carolina Legislative Services Agency | 256 | — | 1 |
| AS36357US | AS36357 - EnTrust Global | 256 | — | 1 |
| AS394057US | BPS-ASN - Batavia Public School District 101 | 256 | — | 1 |
| AS1430US | BB0-BOSTON - Board of Bar Overseers | 256 | — | 1 |
| AS54450US | MBLOX-US - MBLOX INC. | 256 | — | 1 |
| AS33290US | USSC-ASN-4-2020 - United States Sugar Corporation | 256 | — | 1 |
| AS21953US | TCSL - Time Clock Solutions, LLC | 256 | — | 1 |
| AS393220US | ARIN-PFS-SJC - ARIN Operations | 256 | 1 | 2 |
| AS40742US | WESTERN-MD-HEALTH-SYSTEM - UPMC | 256 | — | 1 |
| AS400089US | KIRKLAND-ELLIS-SL - Kirkland & Ellis LLP | 256 | — | 1 |
| AS20327US | FORBES-COM - Forbes.com | 256 | — | 1 |
| AS33201US | TETF - Tilver Enterprises, LLC | 256 | 16 | 2 |
| AS1222US | EPCC-AS - EL PASO COMMUNITY COLLEGE | 256 | — | 1 |
| AS402331US | NWT-030 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |