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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,163 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,240 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 373 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,656 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,941 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,379 |
| 1K |
| — |
| 4 |
| AS6456US | ALTOPIA - Altopia Corporation | 1K | 1 | 2 |
| AS47063US | SWITCHSPACE - Switchspace Inc. | 1K | — | 4 |
| AS401405US | CRUSOE-ASN-02 - CRUSOE ENERGY SYSTEMS LLC | 1K | — | 3 |
| AS18907US | COLOVORE - Colovore LLC | 1K | 1 | 2 |
| AS18612US | TRI-NET-SOLUTIONS - Tri-Net Solutions LLC. | 1K | — | 1 |
| AS27309US | TCC - The Computer Company, Inc. | 1K | — | 1 |
| AS63480US | PROSOURCE-01 - ProSource Technology Solutions | 1K | — | 4 |
| AS23766US | EA-SG-AP - Electronic Arts, Singapore | 1K | — | 1 |
| AS19056US | IETF-49 - Qualcomm, Inc. | 1K | — | 1 |
| AS40218US | TEKCETERA-BORDER - Tekcetera Inc | 1K | — | 1 |
| AS27562US | RHC-INT - Presence Health Network | 1K | — | 4 |
| AS402319US | BYOIP-ASN - TAIPEI101 | 1K | — | 3 |
| AS393268US | SDMICH - Summit Digital, INC. | 1K | — | 4 |
| AS19458US | GLOBALSTAR-1 - Globalstar, Inc. | 1K | — | 4 |
| AS397936US | DCCOMP-IL-DXN - DC COMPUTERS | 1K | 65.5K | 5 |
| AS13822US | MILTON-ACADEMY - Milton Academy | 1K | — | 1 |
| AS396507US | EMERALD-ONION - Emerald Onion | 1K | 4.1K | 7 |
| AS54039US | EIWIFI - Eastern Indiana WIFI, Inc. | 1K | — | 1 |
| AS18865US | AS-INTUIX - Intuix LLC | 1K | 3 | 7 |
| AS6209US | NFL2 - National Football League | 1K | — | 4 |
| AS64212US | ADVANTAGE - Advantage Sales & Marketing LLC | 1K | — | 4 |
| AS54971US | BROWN-TECHNOLOGIES - Brown Technologies, LLC | 1K | — | 4 |
| AS275US | NTTA-275 - NTT America, Inc. | 1K | 1 | 2 |
| AS54384US | CORE-ASN - CORE Electric Cooperative | 1K | — | 3 |
| AS27639US | TEVA-NA - Teva Pharmaceuticals USA, INC | 1K | — | 3 |
| AS26329US | INSERVER-NETWORKS - InServer Networks | 1K | 1 | 5 |
| AS394167US | DALLASISD - Dallas Independent School District | 1K | — | 2 |
| AS11389US | HERITAGE-GALLERIES-AND-AUCTIONEERS - Heritage Capital Corporation | 1K | — | 4 |
| AS23176US | BASICRESEARCH - Basic Research, LLC | 1K | — | 1 |
| AS43845US | HI-TECH ConnectTTo World, Inc trading as Hi-Tech Gateway, LLC Armenia branch | 1K | — | 4 |
| AS33674US | COGNEX-HQ - Cognex Corporation | 1K | — | 4 |
| AS33600US | TNTECH - Tennessee Technological University | 1K | — | 1 |
| AS23075US | CLIK - Clik Broadband, LLC | 1K | — | 1 |
| AS11898US | TRTS - TRUNO Retail Technology Solutions | 1K | — | 4 |
| AS22081US | CITILAB - Citigroup Inc. | 1K | — | 4 |
| AS400119US | IRV-NIDR - PIMCO | 1K | — | 4 |
| AS63185US | IQVIA-ATLANTA - IQVIA Holdings Inc | 1K | — | 4 |
| AS30685US | KITS-AKR-OH-DC1 - KIEHL IT SERVICES, LLC | 1K | 4.1K | 4 |
| AS1734US | ROP-COCA-AS01 - Contra Costa County Regional Occupation Program / Richmond | 1K | 1 | 4 |
| AS32138US | NETTEK01 - Nettek LLC | 1K | — | 1 |
| AS11297US | LIPSCOMB - Lipscomb University | 1K | 16 | 2 |
| AS36842US | NORTHGATEARINSO-INC - NorthgateArinso, LLC | 1K | — | 2 |
| AS39992US | FDC-CTS-HOLDINGS - Fiserv Solutions, LLC | 1K | — | 2 |
| AS401086US | ODY-ASN - Odyssey Logistics & Technology Corporation | 1K | — | 1 |
| AS10990US | ATLDC - Tulix Systems, Inc. | 1K | — | 1 |
| AS394542US | MS-FIBER - MS Fiber, LLC | 1K | 256 | 2 |