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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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 | 24,543 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,304 |
| 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.
32,174 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 | 3,884 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,999 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,345 |
| 256 |
| — |
| 1 |
| AS33581US | PEOPLESBANK-NA - Peoples Bank, National Association | 256 | — | 1 |
| AS46622US | ARMSTRONG-ENTERPRISE-COMMUNICATIONS - Armstrong Enterprise Communications, Inc. | 256 | — | 1 |
| AS401562US | OOXXLINK - OOXX Link Inc | 256 | — | 1 |
| AS16393US | BARRYU-AS - Barry University | 256 | — | 1 |
| AS26564US | NEW-CANAAN - Town of New Canaan | 256 | — | 1 |
| AS397459US | UPPER-ST-CLAIR-SCHOOL-DISTRICT - Upper St. Clair School District | 256 | — | 1 |
| AS397971US | MISD-28-ASN-01 - Midlothian Independent School District | 256 | — | 1 |
| AS397840US | GMS-ASN-01 - GENERAL MARKETING SOLUTIONS LLC | 256 | — | 1 |
| AS400645US | AXXESS-NETWORKS2 - Axxess Networks LLC | 256 | — | 1 |
| AS399612US | SAPPHIREK12-ASN01 - Sapphire Software | 256 | 4.1K | 3 |
| AS17194US | LPGAHQ - LPGA | 256 | — | 1 |
| AS14095US | HCMH-3-AS - Hugh Chatham Memorial Hospital, Inc. | 256 | — | 1 |
| AS395744US | COSTCO-TRAVEL - Costco Travel | 256 | — | 1 |
| AS399802US | FIBERSMITH-CBLOCK-170-31-11 - The Fibersmith Company | 256 | — | 1 |
| AS14047US | FERRIS-MFG-CORP - Ferris MFG Corp | 256 | — | 1 |
| AS53413US | PRCC - Pearl River Community College | 256 | — | 1 |
| AS54717US | CLAREMONT-COMPUTER-NETWORK - Claremont Computer Network LLC | 256 | — | 1 |
| AS402845US | NEROA - Neroa | 256 | 4.1K | 2 |
| AS394750US | SMKTG - Universal Furniture International Inc. | 256 | — | 1 |
| AS40599US | GENTEXCORPORATION - Gentex Corporation | 256 | — | 1 |
| AS393520US | FTSC-HQ - Fulcrum Technology Solutions, LLC | 256 | — | 1 |
| AS399877US | SEAPINES-01 - Sea Pines Resort, LLC | 256 | — | 1 |
| AS36585US | CITY-OF-GREELEY - City of Greeley | 256 | — | 1 |
| AS16554US | CLOUDSOURCE-01 - Cloud Source, Inc. | 256 | 1 | 2 |
| AS402166US | MANNHEIM-SD83 - Mannheim School District 83 | 256 | — | 1 |
| AS399043US | PTOI - Puyallup Tribe of Indians | 256 | — | 1 |
| AS198005US | Andrzejewski-David Andrzejewski David | 256 | — | 1 |
| AS396396US | PEARL-INSURANCE - Pearl and Associates, LTD | 256 | — | 1 |
| AS27031US | SCNM-TEMPE-1 - Southwest College of Naturopathic Medicine & Health Sciences Inc. | 256 | — | 1 |
| AS399338US | CENTRAL-VALLEY-INTERNET - Central Valley Internet LLC | 256 | 4.1K | 2 |
| AS63006US | TRUHEARINGWJ - TruHearing, Inc | 256 | — | 1 |
| AS397781US | EWHEELERINC-01 - Linux Global | 256 | 1 | 2 |
| AS32450US | TESU-WEB - Thomas Edison State University | 256 | — | 1 |
| AS398924US | ZK-IDENTITY - APPBASE.AI INC. | 256 | — | 1 |
| AS393860US | AVISYSTEMS - AVI SYSTEMS INC | 256 | — | 1 |
| AS137194US | ZUORA-AS-AP - Zuora Inc | 256 | — | 1 |
| AS46080US | ORTHOALLIANCE - OrthoAlliance MSO, LLC | 256 | — | 1 |
| AS400067US | BNP-ASNBLOCK-01 - BNP Media, INC | 256 | — | 1 |
| AS393413US | HILLSOUTH-DATACENTER01 - Scient Partners, LLC | 256 | — | 1 |
| AS397337US | KTS-DC-1 - Keytel Systems | 256 | — | 1 |
| AS400014US | PRISEDA-ABQ - Priseda LLC | 256 | — | 1 |
| AS396914US | NET-38-127-93-1 - Pacific Northwest Net, Inc. | 256 | — | 1 |
| AS401779US | AAROBAND - AaroBand, Inc. | 256 | 4.1K | 2 |
| AS16590US | DGF-SERVICES - DGF Services, LLC | 256 | — | 1 |
| AS33557US | DT-ATL-QTS-ASN - Dealership Technologies, LLC | 256 | — | 1 |
| AS54306US | AS-SANTA-MONICA-DIA - Guggenheim Services LLC | 256 | — | 1 |