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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 | 24,540 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,305 |
| 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.
32,187 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,362 |
| 256 |
| 256 |
| 2 |
| AS402425US | QLL-AS-001 - QOREXA | 256 | — | 1 |
| AS395804US | GRH - Grande Ronde Hospital, Inc. | 256 | — | 1 |
| AS399460US | HELIUS - Helius | 256 | — | 1 |
| AS32843US | CITYOFHAYWARDCA - CITY OF HAYWARD | 256 | — | 1 |
| AS394747US | NCAA-NATIONAL-OFFICE - National Collegiate Athletic Association (NCAA) | 256 | — | 1 |
| AS62866US | OHIO-IX-OPS - OHIO IX | 256 | 4.1K | 2 |
| AS394110US | BNFP - Jaguar Land Rover Manhattan | 256 | 1 | 2 |
| AS398558US | EASTMS-MISSON-01 - East Mississippi Community College | 256 | — | 1 |
| AS36719US | MMU-53-AS-NET - Mount Mercy University | 256 | 1 | 2 |
| AS17197US | DAEDELUS - The Daedelus Group | 256 | 1 | 2 |
| AS14035US | KATTEN-MUCHIN-ROSENMAN-LLP - KATTEN MUCHIN ROSENMAN LLP | 256 | — | 1 |
| AS397918US | ADIDAS-AMERICA - adidas America, Inc. | 256 | — | 1 |
| AS39941US | PACIFIC-WAVE - Pacific Wave | 256 | — | 1 |
| AS405US | AFCONC-BLOCK1-AS - Air Force Systems Networking | 256 | — | 1 |
| AS27457US | SLG-2 - SL Green Realty Corp | 256 | — | 1 |
| AS53925US | CBWE-COMM-IMDCPHX1 - CBWE Communications, LLC | 256 | — | 1 |
| AS398177US | ITV-AMERICA-AS1 - ITV America Inc | 256 | — | 1 |
| AS23161US | PHOTOSHELTER-LON - PhotoShelter, Inc. | 256 | 1 | 2 |
| AS205811US | sfm-pop Supply Frame, Inc. | 256 | — | 1 |
| AS40075US | RADIOLOGYLTD-ASN - Radiology LTD | 256 | — | 1 |
| AS393919US | DR - BIDS Trading L.P. | 256 | — | 1 |
| AS53261US | APFCU-1 - Affinity Plus Federal Credit Union | 256 | — | 1 |
| AS393502US | XL-19 - Zenlayer Inc | 256 | — | 1 |
| AS19725US | COHPWE - City Of Houston - Public Works | 256 | — | 1 |
| AS394425US | ADENAHEALTHSYSTEM - Adena Health System | 256 | — | 1 |
| AS16676US | BARCHARTCOM - Barchart.com, Inc. | 256 | — | 1 |
| AS35966US | AEW-AS - AEW Capital Management LP | 256 | — | 1 |
| AS53678US | OFFICERING-ASH - OFFICERING LLC | 256 | — | 1 |
| AS19817US | MIU-IA - Maharishi International University | 256 | — | 1 |
| AS401297US | IGLOO - June Slater | 256 | 1 | 2 |
| AS54815US | TSI-SEMICONDUCTORS - TSI SEMICONDUCTORS | 256 | — | 1 |
| AS36716US | DSO-ASN-01 - Morgan & Morgan, P.A. | 256 | — | 1 |
| AS63241US | GLP - Global Liquidity Partners, LLC | 256 | — | 1 |
| AS30065US | DIETZ-WATSON - Dietz & Watson, Inc. | 256 | — | 1 |
| AS399749US | AS-RTI-01 - Restaurant Technologies, Inc. | 256 | — | 1 |
| AS393452US | FSST - Flandreau Santee Sioux Tribe | 256 | — | 1 |
| AS395408US | SBLI-MA - SBLI | 256 | — | 1 |
| AS30056US | VUBIQUITY - Avail Media | 256 | — | 1 |
| AS62815US | LAER-AS-CAM1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS46607US | FORREST-T-JONES - Forrest T Jones & co, Inc. | 256 | — | 1 |
| AS395390US | ICSCVOICENET - ICS | 256 | — | 1 |
| AS394339US | EMA-TP-CORP - eMoney Advisor | 256 | — | 1 |
| AS393961US | FBB-INTERNET-ID - Farm Bureau Bank | 256 | — | 1 |
| AS40277US | CROUSE-HOSPITAL-AS - Crouse Hospital | 256 | — | 1 |
| AS393553US | MINERVANETWORKS-US-CA-ALV-HEADQUARTERS - Minerva Networks, Inc. | 256 | — | 1 |
| AS398135US | NWNC - SKYWEB OF ILLINOIS, INC. | 256 | — | 1 |