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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 | 24,632 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,307 |
| 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.
32,210 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 | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| 256 |
| — |
| 1 |
| AS32389US | BERKLEE-AS - Berklee College of Music | 256 | — | 1 |
| AS394570US | ALASU - Alabama State University | 256 | 65.5K | 2 |
| AS19503US | NYMAGDIA-LT-CL - Magnetar Capital LLC | 256 | 1 | 2 |
| AS276US | OTS-AS-276 - University of Texas System | 256 | — | 1 |
| AS40180US | VRC-NET - van Ryck Communications LLC | 256 | — | 1 |
| AS393334US | CCSD-ASN-201 - Camden City School District | 256 | — | 1 |
| AS30281US | WASHPOST - Washington Post | 256 | — | 1 |
| AS33630US | WCSR - WOMBLE CARLYLE SANDRIDGE & RICE, LLP | 256 | — | 1 |
| AS30096US | SUMTER-COUNTY-BOCC - Sumter County Board of County Commissioners | 256 | — | 1 |
| AS397851US | SCCC-LIBERAL-01 - Seward County Community College | 256 | — | 1 |
| AS394921US | PAH - Punxsutawney Area Hospital | 256 | — | 1 |
| AS394751US | ND-LEHI - NetDocuments | 256 | — | 1 |
| AS32984US | RUELALA-INC - Rue La La Inc | 256 | — | 1 |
| AS393656US | AS393656 - WIT.COM Inc. | 256 | 65.5K | 2 |
| AS395630US | LCHSASN - Legacy Community Health Services | 256 | — | 1 |
| AS55061US | IEX-MARKET-1 - IEX Group, Inc. | 256 | — | 1 |
| AS393575US | PCSIA-3710 - Professional Computer Solutions, LLC | 256 | 1 | 2 |
| AS19911US | SECURITYSERVICES - Vercara, LLC | 256 | — | 1 |
| AS46287US | SML-ASN - Stonehenge Management, LLC | 256 | — | 1 |
| AS398997US | APERIA-10-2020 - Aperia | 256 | 4.1K | 3 |
| AS21745US | USFOOD1 - US FOODS, INC. | 256 | — | 1 |
| AS54689US | UC-WILLIAMSBURG-ASN - University of the Cumberlands | 256 | — | 1 |
| AS14305US | AS14305 - Accuray Incorporated | 256 | — | 1 |
| AS32993US | SIMONSFOUNDATION-FI - The Simons Foundation, Inc. | 256 | 1 | 2 |
| AS399345US | AAFCU-PDC - American Airlines Federal Credit Union | 256 | — | 1 |
| AS401566US | MONTVIRIDIAN-01 - Montviridian LLC | 256 | 4.1K | 2 |
| AS25678US | SCHIFFHARDIN - Schiff, Hardin & Waite | 256 | — | 1 |
| AS394701US | SOUTH-PLAINS-ELECTRIC-COOP - South Plains Electric Cooperative, Inc. | 256 | — | 1 |
| AS395936US | ASN-ROVHIL - Rust-Oleum Corporation | 256 | — | 1 |
| AS40320US | KROHNE-INC - KROHNE, INC. | 256 | — | 1 |
| AS23490US | WESTDEVINC - West Development, INC. | 256 | — | 1 |
| AS16859US | NAPHCARE-INC - NaphCare, Inc. | 256 | — | 1 |
| AS19405US | HRSD-INTERNET-IP-BLOCK - Hampton Roads Sanitation District | 256 | — | 1 |
| AS399935US | HAYASHIMO - Hayashimo LLC | 256 | 1 | 2 |
| AS62528US | CNV-MTK-CORP - Convey Compliance Systems, Inc. | 256 | — | 1 |
| AS23037US | HCACA-RMCANNISTON-1 - Northeast Alabama Regional Medical Center | 256 | — | 1 |
| AS10851US | SJCB - St Johns County BOCC | 256 | 48 | 4 |
| AS393501US | JCC-13-AS - JCC | 256 | 16 | 2 |
| AS8079US | HTS - HIGH-Q TECHNICAL SOLUTIONS | 256 | 256 | 2 |
| AS12048US | HALLCON-ASN-01 - Hallcon Corporation | 256 | — | 1 |
| AS25642US | SPIDERHOST - The Frohman Group Inc. | 256 | — | 1 |
| AS36155US | RAMCHEALTH - Reedsburg Area Medical Center Inc. | 256 | — | 1 |
| AS15299US | CFS-AS01 - CarsForSale.com | 256 | — | 1 |
| AS30558US | LINCOLNELECTRIC - The Lincoln Electric Company | 256 | — | 1 |
| AS40642US | IWU-2017-01 - ILLINOIS WESLEYAN UNIVERSITY | 256 | — | 1 |
| AS215069US | oocm Office of Consensus Maintenance LLC | 256 | 8 | 6 |