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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 | 23,961 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,299 |
| 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.
32,159 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 | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,341 |
| 2K |
| — |
| 1 |
| AS26955US | ITAGROUP-AS - ITA GROUP | 2K | — | 7 |
| AS396207US | STSS-BEDMINSTER-ASN - Mallinckrodt Enterprises LLC | 2K | — | 8 |
| AS27595US | COLUM-600 - Columbia College Chicago | 2K | — | 2 |
| AS53429US | FREEDOMVOICE - FreedomVOICE Systems | 2K | — | 2 |
| AS46359US | MCKINNEYISD - McKinney ISD | 2K | — | 6 |
| AS18554US | AGILENT-DFW - Agilent Technologies, Inc. | 2K | — | 8 |
| AS402413US | BURST - BURSTX | 2K | — | 1 |
| AS55219US | SOURCEFIRE-LABS - Cisco Systems, Inc. | 2K | 23 | 11 |
| AS40732US | TOLEDO-PUBLIC-SCHOOLS - Toledo Public Schools | 2K | — | 1 |
| AS63392US | DELTASTATE-ASN-01 - Delta State University | 2K | — | 1 |
| AS394862US | LT-WR - LT-WR, LLC | 2K | — | 5 |
| AS397911US | WIFISQUARED - Wifi Squared | 2K | — | 6 |
| AS30115US | CARRIERX-LA-01 - FreeConferenceCall.com | 2K | — | 6 |
| AS399307US | STERLING-MA - Town of Sterling | 2K | 65.5K | 3 |
| AS53296US | SCASD - State College Area School District | 2K | — | 1 |
| AS6109US | NDCHEALTH - NDCHealth Corporation | 2K | — | 7 |
| AS394329US | UT-COURTS - STATE OF UTAH COURTS | 2K | — | 3 |
| AS63368US | PLC - Packet Layer | 2K | — | 8 |
| AS53591US | YTELL - Ytel, Inc. | 2K | 81.9K | 4 |
| AS32077US | ULTISOFTASN - ULTIMATE SOFTWARE GROUP | 2K | — | 3 |
| AS18819US | ENTERGY-SERVICES-LLC - Entergy Services, LLC | 2K | — | 1 |
| AS64276US | CLEVELAND-UTILITIES-FIBER - Cleveland Utilities Authority | 2K | — | 1 |
| AS11334US | MIDAMERICAN - MidAmerican Energy Holdings Company | 2K | — | 8 |
| AS14803US | ASHEREDC - HERE North America LLC | 2K | — | 1 |
| AS401674US | HUB-ASN-01 - Harriman Utility Board | 2K | 65.5K | 2 |
| AS46829US | LAMHOSTING - Lamhosting LLC | 2K | 6 | 13 |
| AS26286US | MYSTICDEVIO - MysticDev LLC | 2K | 2.3K | 13 |
| AS3060US | SC-YORKTECH - York Technical College | 2K | — | 1 |
| AS10599US | MCKESSON - McKesson Corp. | 2K | — | 8 |
| AS25950US | BEGGSTELEPHONE - Beggs Telephone Company, Inc. | 2K | — | 1 |
| AS54648US | CALBROADBAND - California Broadband Services | 2K | — | 4 |
| AS22088US | CITY-OF-EDMONDS-WA - City of Edmonds | 2K | — | 5 |
| AS21576US | IL-853-21576 - insiteOne | 2K | — | 8 |
| AS14088US | WIU7 - Westmoreland Intermediate Unit | 2K | — | 1 |
| AS10322US | ERCOT-ISO - Ercot Independent System Operations | 2K | — | 5 |
| AS19971US | QCNTR1405N5 - Q CENTER LLC | 2K | — | 1 |
| AS40089US | BULLHORN-INC-BOSTON - Bullhorn Inc. | 2K | — | 8 |
| AS398149US | NTS-HARLINGEN-01 - Vexus Fiber | 2K | — | 4 |
| AS57872US | PHOENIXNAP-EU PHOENIX NAP, LLC. | 2K | — | 1 |
| AS25941US | SUPERCLUBS-25941 - SuperClubs.com | 2K | — | 1 |
| AS14145US | REGIONS-ASN-3 - REGIONS FINANCIAL CORPORATION | 2K | 1 | 3 |
| AS22883US | CONDENAST - CondeNast Publications | 2K | — | 8 |
| AS35956US | SNOCO - Snohomish County Government | 2K | — | 8 |
| AS223US | AS223 - Parsons Corporation | 2K | — | 8 |
| AS18551US | ROTHINC - Rothschild & Co US Inc. | 2K | — | 2 |
| AS46445US | TELPAGE-EMP - TELPAGE | 2K | — | 1 |