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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 | 21,189 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,241 |
| 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 |
| 228 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 372 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,656 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,936 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,378 |
| 1.8K |
| — |
| 7 |
| AS16940US | ASPECT - Aspect Software, Inc. | 1.8K | — | 6 |
| AS62754US | REDI-NET - REDI Net | 1.8K | — | 3 |
| AS205759US | GHOSTYNETWORKS Ghosty Networks LLC | 1.8K | — | 7 |
| AS399521US | BNS - BNS | 1.8K | 6 | 13 |
| AS46206US | AS-SANFORDHEALTH - Sanford Health | 1.8K | — | 7 |
| AS394808US | DEMAN-AS - Salesforce.com, Inc. | 1.8K | — | 7 |
| AS53450US | UAAM-ASN - University of Arkansas at Monticello | 1.8K | — | 3 |
| AS30311US | DWS-LON - Disney Worldwide Services, Inc. | 1.8K | — | 7 |
| AS53602US | MILWAUKEE-ELECTRIC-TOOL-CORPORATION - Milwaukee Electric Tool Corporation | 1.8K | — | 6 |
| AS394105US | AMTRUST-NA - AmTrust North America, Inc. | 1.8K | — | 5 |
| AS14388US | BRONCO-WINE - Bronco Wine Co. | 1.8K | — | 7 |
| AS11277US | NISOURCE-CORPORATE-SERVICES-COMPANY - NiSource Corporate Services Company | 1.8K | — | 4 |
| AS3783US | AIU-ALLEGHENY-CONNECT-RWAN - Allegheny Intermediate Unit | 1.8K | — | 7 |
| AS19917US | MOHEGANSUN - Mohegan Sun | 1.8K | — | 5 |
| AS15951US | DJUK Dow Jones & Company, Inc. | 1.8K | — | 6 |
| AS402257US | HUBSFERA - Hubsfera LLC | 1.8K | — | 7 |
| AS400414US | ROAMR-COMMUNICATIONS - ROAMR Communications Inc. | 1.8K | — | 4 |
| AS32002US | RACKGENIUS - RackGenius | 1.8K | 2 | 6 |
| AS54555US | HOSTDUPLEX - Host Duplex, LLC | 1.8K | — | 4 |
| AS46358US | UAT - University of Advancing Technology | 1.8K | — | 7 |
| AS394802US | BRISTOLHOSPITAL - BRISTOL HOSPITAL INCORPORATED | 1.8K | — | 4 |
| AS401263US | NUCLEARFALLOUT-NYC - Nuclearfallout Enterprises, Inc. | 1.8K | 4.1K | 8 |
| AS23219US | MICROCERV - MicroCerv | 1.8K | — | 3 |
| AS53420US | HARTLAND-INTERNET - Merge Healthcare Solutions Inc. | 1.8K | — | 7 |
| AS400212US | VERGETEL-GROUP-LLC - VergeTel Group LLC | 1.8K | 1 | 5 |
| AS399628US | IMR-AS-01 - Internet Measurement Research | 1.8K | 7 | 14 |
| AS36599US | SOFTETHER-AMERICA - SoftEther Telecommunication Research Institute, LLC | 1.8K | — | 4 |
| AS399491US | VIOLA-COMMUNICATIONS - Viola Communications Inc | 1.8K | — | 5 |
| AS33365US | CINFIN-ASN-01 - Cincinnati Financial Corporation | 1.8K | — | 5 |
| AS19643US | NETSYN - Network Synergy Corporation | 1.8K | — | 7 |
| AS10250US | DATAFIVE - INet Solutions | 1.8K | — | 7 |
| AS26762US | CNVR-US-EAST - Conversant, LLC | 1.8K | 34 | 9 |
| AS13501US | OARNET-AS-2 - OARnet | 1.8K | — | 7 |
| AS30382US | IPTELX - IPtelX | 1.8K | 65.5K | 8 |
| AS395862US | SKYFINET - SkyFiNet | 1.8K | — | 7 |
| AS393906US | TRANSWORLDSYSTEMS - TSI | 1.8K | — | 6 |
| AS396002US | TLVTPAATL - TeleVoIPs | 1.8K | — | 4 |
| AS13367US | COMCAST-13367 - Comcast Cable Communications, LLC | 1.8K | 64 | 71 |
| AS19804US | ASNBLK-VTLA2 - NTT Global Networks Incorporated | 1.8K | — | 7 |
| AS53873US | SCL-550-53873 - SATC COLO LLC | 1.8K | 65.5K | 5 |
| AS31799US | SP-US-WEST1 - Samaritan's Purse | 1.8K | — | 7 |
| AS11176US | SMART-CITY-MNCC - SMART CITY NETWORKS, LIMITED PARTNERSHIP | 1.8K | — | 3 |
| AS25670US | THINKCSC - thinkCSC | 1.8K | 34 | 11 |
| AS46829US | LAMHOSTING - Lamhosting LLC | 1.8K | 5 | 11 |
| AS33661US | CMCS - Comcast Cable Communications, LLC | 1.8K | 15 | 22 |
| AS25917US | RA-NA-CNF - ROCKWELL AUTOMATION Inc. | 1.8K | — | 7 |