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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 |
| 1.8K |
| — |
| 7 |
| AS20019US | PEC-TEL - Parwan Electronics Corporation | 1.8K | — | 7 |
| AS10587US | FIBERPIPE - Fiberpipe Inc. | 1.8K | 65.5K | 4 |
| AS22481US | AVSGIA-AS - Encore Group (USA) LLC | 1.8K | — | 7 |
| AS19054US | NATHNETWORK-ASN - Nath Network & Telecom Inc | 1.8K | 5 | 12 |
| AS53561US | FASTER-CAJUN-LLC - Faster Cajun Networks | 1.8K | — | 5 |
| AS32342US | GENEXSERVICES - Genex Services Inc | 1.8K | — | 6 |
| AS397893US | OTZ-1 - OTZ Telecommunications, LLC | 1.8K | — | 7 |
| AS400436US | KCNA-ASN-01 - Kentucky Communications Network Authority (KCNA) | 1.8K | — | 4 |
| AS33661US | CMCS - Comcast Cable Communications, LLC | 1.8K | 15 | 22 |
| AS21799US | MWDSC - Metropolitan Water District of Southern California | 1.8K | — | 7 |
| AS395898US | TND - TND, LLC | 1.8K | 4 | 11 |
| AS26280US | POLARIS - Polaris Industries, Inc. | 1.8K | — | 7 |
| AS30398US | AS-ADS - Automated Data Systems | 1.8K | — | 4 |
| AS32541US | CCI-DATA-01 - CCI Networks Services | 1.8K | — | 7 |
| AS394984US | FDBL-NETWORK - Fragomen, Del Rey, Bernsen & Loewy, LLP | 1.8K | — | 7 |
| AS36829US | AS-WINSTRI - Winstri Corporation | 1.8K | 6 | 13 |
| AS46502US | SYNCWAVE-499 - SyncWave, LLC | 1.8K | — | 3 |
| AS12156US | AURORA-COLORADO - City of Aurora Colorado | 1.8K | — | 6 |
| AS10694US | MONST-2AS - Monster Worldwide, Inc. | 1.8K | — | 5 |
| AS134537US | ATT-NBE-US - ATT NBE Equinix Seattle | 1.8K | 2 | 9 |
| AS20111US | LENOVO-NET - Lenovo (United States) Inc. | 1.8K | — | 6 |
| AS393362US | CDC-01 - Central Dynamics | 1.8K | — | 6 |
| AS396336US | HHS-DC - Holzer Health System | 1.8K | — | 7 |
| AS400686US | WWEST-CORE-GRWA-01 - WAHKIAKUM WEST TELEVISION, INC. | 1.8K | 65.6K | 10 |
| AS21778US | NET-DIDATA-NY - Dimension Data North America, Inc. | 1.7K | 1 | 12 |
| AS18898US | VESTA-CORP - Vesta Corporation | 1.7K | — | 7 |
| AS57578US | MISAKA-CIS-AS Misaka Network, Inc. | 1.5K | 139.3K | 20 |
| AS46279US | TECHPRO-01 - TechPro, Inc | 1.5K | — | 3 |
| AS22238US | DARPA - Defense Advanced Research Projects Agency(DARPA) | 1.5K | — | 6 |
| AS55259US | NEUTRONA-NETWORKS-INTERNATIONAL - Transtelco Inc | 1.5K | — | 5 |
| AS47000US | SUPERION - Superion, LLC | 1.5K | — | 6 |
| AS572US | GBMC-TOW - Greater Baltimore Medical Center Inc | 1.5K | — | 4 |
| AS397921US | MEGACOMLUG - Megawatt Communications LLC | 1.5K | 4.4K | 8 |
| AS11421US | HYWG-BACKBONE - HYW | 1.5K | 68 | 14 |
| AS1057US | FALCON-WIRELESS - Falcon Wireless, LLC | 1.5K | — | 6 |
| AS402062US | AUTOMATION-EXCHANGE - AUTOMATION EXCHANGE INFRASTRUCTURE LLC | 1.5K | 5 | 11 |
| AS54809US | MCMSYS - MCM Systems, LLC | 1.5K | — | 3 |
| AS393276US | CEA - Chugach Electric Association, Inc. | 1.5K | — | 6 |
| AS20213US | GIFFORD-WIRELESS - Gifford Wireless Inc | 1.5K | — | 6 |
| AS393446US | ALPHACORE-NETWORK - AlphaCore Network LLC | 1.5K | — | 6 |
| AS40122US | MORTGAGE-INFORMATION-SERVICES-INC - Mortgage Information Services INC | 1.5K | — | 6 |
| AS398370US | NORTHWOODS-COMMUNICATION-TECHNOLOGIES - Northwoods Connect | 1.5K | — | 3 |
| AS19615US | SITEL-US - Sitel | 1.5K | — | 6 |
| AS396286US | VSTOASN - Federal Cartridge Co. | 1.5K | — | 6 |
| AS393303US | RYDERSYSTEMINC - Ryder System, Inc. | 1.5K | — | 6 |
| AS399055US | SOUTHEAST-NETWORKS - Southeast Networks | 1.5K | 65.5K | 6 |