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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 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 | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| BEARCOM-ALWAYS-ON - BearCom Operating, LLC |
| 256 |
| — |
| 1 |
| AS402492US | HOSTCRAM - HostCram | 256 | — | 1 |
| AS29858US | ONQ-COLODC-HOU01 - On Q Operating Company LLC | 256 | — | 1 |
| AS393382US | KERNHEALTHSYSTEMS - Kern Family Health Care | 256 | — | 1 |
| AS399292US | UAMTCORP-01 - UAM Technologies Corp | 256 | — | 1 |
| AS35619US | MHS-331-35619 - Amergis Healthcare Staffing, Inc. | 256 | — | 1 |
| AS393578US | MESA-WATER-DISTRICT - Mesa Water District | 256 | — | 1 |
| AS399119US | TOP-TVMASTERS - TV Masters, LLC | 256 | — | 1 |
| AS21754US | MARKEL-CORPORATION - Markel Corporation | 256 | — | 1 |
| AS25669US | TOWERPRODUCTS - MARKERTEK VIDEO SUPPLY | 256 | — | 1 |
| AS401495US | IVA-ASN-1 - IVA | 256 | — | 1 |
| AS396133US | HOUSTON-ZOO - Houston Zoo | 256 | — | 1 |
| AS401245US | GOSHEN-HEALTH - GOSHEN HEALTH | 256 | — | 1 |
| AS400962US | FOURTEEN-FOODS-01 - Fourteen Foods, LLC | 256 | — | 1 |
| AS40255US | AS40255 - Brigade Capital Management, LP | 256 | — | 1 |
| AS401870US | AUTOMATE-THE-THINGS-01 - Automate The Things, LLC | 256 | — | 1 |
| AS401522US | CBCTECH-AMERICAS - CBCCOM AMERICAS INC. | 256 | — | 1 |
| AS402132US | MIXHITS-RADIO - Mixhits Radio, LLC | 256 | — | 1 |
| AS36602US | WESTWOODONE - Dial Global | 256 | — | 1 |
| AS11881US | CNANDC-01 - CNA National Warranty Corporation | 256 | — | 1 |
| AS400649US | APOG-UTD - Apogee Telecom Inc. | 256 | — | 1 |
| AS62480US | MODSPACE - Willscot | 256 | — | 1 |
| AS402144US | NETWORKING-WEST-VIRGINIA - Networking West Virginia | 256 | — | 1 |
| AS53819US | PICTOMETRY-1 - PICTOMETRY INTERNATIONAL CORP. | 256 | — | 1 |
| AS32788US | C75-NETWORKS - Coloblox Data Centers Inc | 256 | — | 1 |
| AS11884US | IWPBGP - Insteel Industries, Inc. | 256 | — | 1 |
| AS401977US | SNC-TUOL - Sierra Nevada Communications | 256 | — | 1 |
| AS20450US | THL16-ASN - Trojan Hosting, LLC. | 256 | — | 1 |
| AS401754US | HAMKING - Double Dog Adventures, LLC | 256 | 256 | 2 |
| AS401498US | ROCSOFT - Rochester Software Associates, Inc. | 256 | — | 1 |
| AS396457US | VIRGINIA-WESLEYAN-UNIVERSITY - Virginia Wesleyan University | 256 | — | 1 |
| AS403079US | FREEDOMFIBERMT - Freedom | 256 | — | 1 |
| AS40856US | SBL-ASN - Sarah Bush Lincoln Health Center | 256 | — | 1 |
| AS400545US | CYGNUS-COMMUNICATIONS - Cygnus Communications | 256 | — | 1 |
| AS7761US | AS-350E - Morningstar, Inc. | 256 | — | 1 |
| AS40118US | THIRD-POINT-LLC - Third Point LLC | 256 | — | 1 |
| AS394299US | ELLIOTT-ELECTRIC - Elliott Electric Supply Inc. | 256 | — | 1 |
| AS402522US | TAL-ASN - TACKLE | 256 | — | 1 |
| AS13974US | OL-ASN - NetCrew | 256 | 256 | 2 |
| AS393998US | EGV-BGP - Elk Grove Village Police Department | 256 | — | 1 |
| AS26363US | MEDTRONIC-AS-2 - Medtronic, Incorporated | 256 | — | 1 |
| AS399149US | GOOD-SHEPHERD - Good Shepherd Medical Center | 256 | — | 1 |
| AS25663US | PRIDEMOBILITY - Pride Mobility Products Corporation | 256 | — | 1 |
| AS40719US | AS40719 - One William Street Capital Management, L.P. | 256 | — | 1 |
| AS54513US | ERHC - EL RIO HEALTH CENTER | 256 | — | 1 |
| AS62677US | WFASN - William Floyd Union Free School District | 256 | — | 1 |
| AS54495US | BYTESPUR - Bytespur Corporation | 256 | 1 | 2 |