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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. | 218M | 24,358 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,342 |
| 768 |
| — |
| 3 |
| AS30553US | THOREK-30553 - Thorek Memorial Hospital | 768 | — | 3 |
| AS33611US | NUVO2 - Nuvodia, LLC | 768 | — | 3 |
| AS400541US | RIDGELINE - Ridgeline International, LLC | 768 | 768 | 6 |
| AS19424US | CV-NET-1 - Cars Commerce | 768 | — | 2 |
| AS59993US | UILLLC-20230328 UNLIMITED IS LIMITED, LLC | 768 | — | 3 |
| AS53410US | VA-DATACENTER - APPLIED SYSTEMS, INC | 768 | — | 3 |
| AS399088US | NVENERGY-1 - Nevada Power Company | 768 | — | 3 |
| AS63071US | STAFFORDCOUNTYPUBLICSCHOOLS - Stafford County Public Schools | 768 | — | 3 |
| AS53770US | IQOR-AS - iQor US Inc. | 768 | — | 3 |
| AS36145US | PHILLIPS-ACADEMY - Phillips Academy | 768 | — | 3 |
| AS16652US | RISEUP - Riseup Networks | 768 | 1 | 4 |
| AS54583US | 54583 - American College of Surgeons | 768 | — | 3 |
| AS11055US | MIDCONTINENT-COMMUNICATIONS - Midcontinent Communications | 768 | 349 | 19 |
| AS78US | BA-346-78 - BT Americas, Inc | 768 | — | 3 |
| AS11743US | EBSCO - EBSCO Industries, Inc. | 768 | — | 3 |
| AS400773US | BOSTON-FIBER - Boston Fiber LLC | 768 | 1 | 5 |
| AS54803US | BT-AS-1 - Boys Town | 768 | — | 3 |
| AS393374US | TEGNA-CORP-EAST1 - TEGNA Inc. | 768 | — | 3 |
| AS54413US | FPKI-AS - General Services Administration | 768 | 2 | 5 |
| AS36490US | OWENSCORNING - Owens-Corning | 768 | 8 | 4 |
| AS30330US | ARI-9000 - Automotive Rentals, Inc. | 768 | 2 | 5 |
| AS402035US | SGTLABS - Sergeant Laboratories, Inc | 768 | — | 3 |
| AS394321US | NISC-AS01 - National Information Solutions Cooperative, Inc | 768 | — | 3 |
| AS20020US | POWERNET - Power Systems Computers | 768 | — | 2 |
| AS54303US | FILMO - FILMON.COM, INC. | 768 | — | 3 |
| AS40057US | GAAQUA - Georgia Aquarium, INC. | 768 | — | 3 |
| AS394714US | DRC - Data Recognition Corporation | 768 | — | 3 |
| AS53621US | RADY-CHILDRENS-HOSPITAL-SAN-DIEGO - Rady Children's Hospital - San Diego | 768 | — | 3 |
| AS13395US | SMART-CITY-SOCC - SMART CITY NETWORKS, LIMITED PARTNERSHIP | 768 | — | 2 |
| AS55229US | WSHOSTING - White Sands Hosting | 768 | — | 3 |
| AS395414US | ICONECTIV - Iconectiv, LLC | 768 | — | 3 |
| AS33391US | SECURITY-FINANCE - SECURITY FINANCE CORPORATION OF SPARTANBURG | 768 | — | 3 |
| AS32340US | ZEN-BACKBONE - ZenWalk | 768 | — | 3 |
| AS396411US | MICROPACT-ASH-DC - MicroPact Global, Inc | 768 | — | 3 |
| AS401988US | AS5005 - 5005 LLC | 768 | 260 | 8 |
| AS395423US | AOFL - Age of Learning, Inc. | 768 | 16 | 3 |
| AS21806US | NATIONAL-FUEL - National Fuel Gas Distribution Corporation | 768 | — | 3 |
| AS20457US | VERDINET-AS-01 - Verdinet LLC | 768 | — | 2 |
| AS394199US | CEPC-AS1 - Central Electric Power Cooperative | 768 | — | 3 |
| AS21663US | GETWELL-NETWORK - GetWellNetwork, Inc. | 768 | — | 3 |
| AS53806US | ASDUWLT - DELOITTE SERVICES - SLTC | 768 | — | 2 |
| AS399594US | BLUESPRING-01 - Blue Spring Broadband | 768 | — | 3 |
| AS400213US | COMANDSOLUTIONS - COMAND Solutions, Inc | 768 | — | 3 |
| AS36240US | COMMUNICATIONS-UNLIMITED-INC - Communications Unlimited Inc. | 768 | — | 3 |
| AS14473US | I3ASN1-200E - Inside The Internet, Inc | 768 | — | 2 |
| AS62949US | KELLYSERVICES - Kelly Services Inc. | 768 | — | 3 |