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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) | 227.7M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,661 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,490 |
| 2K |
| — |
| 8 |
| AS18973US | TAG-ONLINE - TAG Online Inc. | 2K | 73.7K | 7 |
| AS62611US | CEC-AS-NB-4080 - Cutting Edge Computers, INC. | 2K | — | 8 |
| AS32913US | ACTUAL-BROADBAND - Actual Broadband | 2K | 41 | 16 |
| AS14314US | UTRGV-AS-14314 - University of Texas Rio Grande Valley | 2K | — | 3 |
| AS396850US | IRHN - Illinois Rural Healthnet | 2K | — | 1 |
| AS40121US | MAXWIRE-001 - MAXWIRE, INC. | 2K | — | 8 |
| AS31812US | PBSO-INTERNET - Palm Beach County Sheriff's Office | 2K | — | 8 |
| AS40833US | NYTD-SEA1 - The New York Times Company | 2K | — | 4 |
| AS22088US | CITY-OF-EDMONDS-WA - City of Edmonds | 2K | — | 5 |
| AS63368US | PLC - Packet Layer | 2K | — | 8 |
| AS40732US | TOLEDO-PUBLIC-SCHOOLS - Toledo Public Schools | 2K | — | 1 |
| AS1914US | DNIC-ASBLK-01910-01914 - United States Department of Defense (DoD) | 2K | — | 1 |
| AS401326US | BOONE-COOPERATIVE-ADVANTAGE - BCA Connect, LLC | 2K | — | 1 |
| AS25619US | AIROSURF - Chisholm Broadband LLC | 2K | — | 8 |
| AS21576US | IL-853-21576 - insiteOne | 2K | — | 8 |
| AS40187US | GIGSTREEM-WARP2BIZ - GiGstreem | 2K | — | 8 |
| AS26128US | AS-360WISP - 360 Communications, LLC | 2K | — | 8 |
| AS20406US | BRASLINK - Braslink Network Inc | 2K | — | 5 |
| AS46445US | TELPAGE-EMP - TELPAGE | 2K | — | 1 |
| AS18867US | AMERICAN-MESSAGING - American Messaging Services L.L.C. | 2K | — | 8 |
| AS63428US | LMAXUSA - LMAX USA Inc | 2K | — | 3 |
| AS46186US | GILD-SCI - Gilead Sciences | 2K | — | 8 |
| AS18819US | ENTERGY-SERVICES-LLC - Entergy Services, LLC | 2K | — | 1 |
| AS394130US | STEALTHBYTE - StealthByte Network LLC | 2K | — | 6 |
| AS14588US | ATVI-BEENOX-CAN - Activision Publishing, Inc. | 2K | — | 5 |
| AS32208US | SKL-SERVICES-ASN - SKL Services Inc | 2K | — | 7 |
| AS64276US | CLEVELAND-UTILITIES-FIBER - Cleveland Utilities Authority | 2K | — | 1 |
| AS36745US | CALERES-INC - Caleres, Inc. | 2K | — | 8 |
| AS16818US | SYNTAX-NJ-AZ - Syntax systems Ltd LLC. | 2K | — | 5 |
| AS40148US | PRINCE-GEORGES-INTERGOVERNMENTAL-NETWORK - PRINCE GEORGES INTERGOVERNMENTAL NETWORK COMMUNITY COORDINATING COMMITTEE | 2K | — | 3 |
| AS394329US | UT-COURTS - STATE OF UTAH COURTS | 2K | — | 3 |
| AS395571US | TYR-VLT-110 - Tyler Vault | 2K | — | 8 |
| AS397354US | TSWIFI-AS - Wi-Fiber, Inc. | 2K | — | 6 |
| AS11885US | DYNAMICPACKET - DYNAMIC PACKET CORP | 2K | 4.1K | 9 |
| AS32077US | ULTISOFTASN - ULTIMATE SOFTWARE GROUP | 2K | — | 3 |
| AS33116US | ASN-WASH-CO-VA-SCHOOLS - Washington County Schools | 2K | — | 5 |
| AS22904US | WSITS - Winning Strategies ITS | 2K | — | 7 |
| AS401674US | HUB-ASN-01 - Harriman Utility Board | 2K | 65.5K | 2 |
| AS14803US | ASHEREDC - HERE North America LLC | 2K | — | 1 |
| AS27197US | PEPB - Princeton Electric Plant Board | 2K | — | 1 |
| AS32696US | TVD-EDISON-777 - Tri State Voice & Data, LLC | 2K | — | 8 |
| AS54097US | AS-CCTTE - CCT Telecommunications, Inc. | 2K | 65.5K | 2 |
| AS62892US | WBD-AS62892 - Time Warner Enterprise Infrastructure Services LLC | 2K | — | 2 |
| AS14097US | COUNTRYMILE-ASN-01 - Country Mile Wireless, Inc | 2K | 65.5K | 3 |
| AS399352US | DRILLINGINFO-SEATTLE - Drilling Info Inc. | 2K | — | 1 |
| AS55219US | SOURCEFIRE-LABS - Cisco Systems, Inc. | 2K | 23 | 11 |