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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,285 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,310 |
| 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.
32,244 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,000 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,356 |
| 1K |
| — |
| 1 |
| AS25971US | MILWAUKEE-PS - Milwaukee Public Schools | 1K | — | 4 |
| AS46824US | NAMECRANE - NameCrane LLC | 1K | 4.1K | 9 |
| AS30166US | EX3IN - Ex3 | 1K | — | 1 |
| AS398492US | MPM-ASN - Momentive Performance Materials Inc. | 1K | — | 3 |
| AS13401US | STARWOOD-HOTELS - Marriott International, Inc. | 1K | — | 1 |
| AS15292US | PIDOXA-RACINE - PIN Business Network, Inc. | 1K | 1 | 5 |
| AS397304US | MTOR1-MEDIA-566 - MediaNet, Inc | 1K | — | 3 |
| AS394107US | MOJAVE-COMMUNICATIONS - Mojave Communications, Inc. | 1K | — | 1 |
| AS55122US | DCCLLC - Digital Communications Consulting LLC | 1K | — | 2 |
| AS398820US | EA-ASN-01 - Eagle Alliance | 1K | 257 | 5 |
| AS401526US | AIRPLEXUS - Airplexus, Inc. | 1K | — | 1 |
| AS394902US | HCDL-PORTLAND-DATA-CENTER - H5 Data Centers | 1K | 256 | 5 |
| AS32319US | AS-MARQETA - Marqeta, Inc. | 1K | — | 4 |
| AS3704US | ISPNET-AS - isp.net | 1K | — | 1 |
| AS396971US | SLIC-ASN-4 - Slic Network Solutions, Inc | 1K | — | 4 |
| AS29934US | NETACOM - Netadyne Networks, Inc. | 1K | — | 3 |
| AS30366US | AS-RHYTHMIC-NY - Rhythmic Technologies, Inc. | 1K | — | 3 |
| AS397793US | ASN-SWBNO-01 - Sewerage and Water Board of New Orleans | 1K | — | 2 |
| AS36392US | SMART-CITY-VBCC - SMART CITY NETWORKS, LIMITED PARTNERSHIP | 1K | — | 3 |
| AS396268US | VILOGICS-EBENSDC1 - viLogics, Inc. | 1K | — | 1 |
| AS17206US | MOUNTAIN-AMERICA - Mountain America Credit Union | 1K | — | 4 |
| AS23539US | TCF-NETWORK-01 - Tel-Star Communications Of Florida, Inc. | 1K | — | 3 |
| AS23235US | BOSMED-88-ENEWTON - Boston Medical Center | 1K | — | 4 |
| AS20127US | KLEINSCHMIDT - Kleinschmidt Inc. | 1K | 2 | 6 |
| AS55268US | WA-EDMONDS15 - Edmonds School District #15 | 1K | — | 3 |
| AS26671US | WRL-12 - Wynn Resorts Limited | 1K | — | 3 |
| AS400719US | RJN-SERVICES - RJN Services | 1K | 4 | 8 |
| AS19546US | RCWILLEY - R. C. Willey Home Furnishings | 1K | — | 4 |
| AS398180US | HDERLINK - HDER Link, LTD | 1K | — | 4 |
| AS398263US | NYC-BROADBAND-PARTNERSHIP - NYC Broadband Partnership | 1K | 65.5K | 5 |
| AS401943US | HSE-ARIN-01 - Hornetsecurity | 1K | — | 2 |
| AS32560US | BITXBIT - BIT BY BIT COMPUTER CONSULTANTS, INC. | 1K | — | 4 |
| AS26156US | VERUS - Verus, LLC | 1K | 65.5K | 2 |
| AS6979US | SAP-SE-PHL - SAP America Inc. | 1K | 4 | 6 |
| AS55277US | PINAL-AS - Pinal County Arizona | 1K | — | 1 |
| AS20267US | INTERNETSERVER - INTERNET SERVER CONNECTIONS INC | 1K | — | 1 |
| AS54800US | LAREDOISD - Laredo ISD | 1K | — | 4 |
| AS32143US | VNILESASNET - The Village of Niles | 1K | — | 4 |
| AS401118US | S1-COMMUNICATION - S1 | 1K | — | 3 |
| AS23515US | ITSOLUTIONS - IT Solutions Consulting, LLC | 1K | — | 4 |
| AS18778US | CLA - CliftonLarsonAllen, LLP | 1K | — | 4 |
| AS32182US | GMCC - Grange Mutual Casualty Co. | 1K | — | 2 |
| AS21895US | NYLS-AS - New York Law School | 1K | — | 4 |
| AS399871US | HFL-NETWORKS - HFL Networks LLC | 1K | 65.5K | 2 |
| AS395872US | CITYOFGASTONIANC-1 - City of Gastonia | 1K | — | 1 |
| AS6515US | DACSNX-ISP - DACS-IX | 1K | 70 | 14 |