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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 |
| 256 |
| 257 |
| 3 |
| AS395444US | MERIT-RICHMOND - Merit Medical Systems, Inc | 256 | — | 1 |
| AS22274US | SMP-VIR - Standard Motor Products, Inc | 256 | — | 1 |
| AS46765US | ASN1 - Liberum Capital Inc. | 256 | — | 1 |
| AS12095US | CNNX-01 - CONNEXUS CREDIT UNION | 256 | — | 1 |
| AS62837US | SMARTFIBERNETWORKS - Smart Fiber Networks | 256 | 65.5K | 2 |
| AS393286US | CASCADEAS - Cascade Investment LLC | 256 | — | 1 |
| AS399416US | CITY-OF-PHOENIX-AVN - City of Phoenix | 256 | — | 1 |
| AS397040US | SUPN-INT - Supernus Pharmaceuticals, Inc. | 256 | — | 1 |
| AS396418US | DCSTECH-US - DCSTech, LLC | 256 | 1 | 2 |
| AS397537US | MARINERS-GW - The Baseball Club of Seattle, LLLP | 256 | — | 1 |
| AS150318US | TOKYOONLINE-AS-AP - Tokyo Online Co.,Ltd. | 256 | — | 1 |
| AS19520US | WISHVPS - wishVPS Inc. | 256 | — | 1 |
| AS396897US | DECOPAC - DecoPac, Inc. | 256 | — | 1 |
| AS395644US | RGI - The Root Group, Inc. | 256 | — | 1 |
| AS16400US | WAVELENGTH - Wavelength LLC | 256 | — | 1 |
| AS14036US | STACKAV-01 - Stack AV | 256 | — | 1 |
| AS138454US | TFC-121-138454 - Trinity Fellowship | 256 | — | 1 |
| AS393902US | MMH-158 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS14691US | GLAA - Great Lakes Adventist Academy | 256 | 1 | 2 |
| AS400116US | COLDIST-DAT1 - COLUMBIA DISTRIBUTING | 256 | — | 1 |
| AS395069US | IBC-SA-TESORO - International Bank of Commerce | 256 | — | 1 |
| AS402268US | YUGS-2 - YUGS Networks Ltd. | 256 | — | 1 |
| AS22810US | BROOKS-AUTOMATION - Brooks Automation Inc. | 256 | — | 1 |
| AS46983US | CL-ASN-01 - crunchdev LLC | 256 | — | 1 |
| AS54158US | SAG-NYC-1 - Selendy & Gay PLLC | 256 | — | 1 |
| AS400375US | CITY-OF-SANTA-CLARA - City of Santa Clara, Ca | 256 | — | 1 |
| AS29786US | ABRAMSCAPITALMANAGEMENTLLC - Abrams Capital Management, LLC | 256 | — | 1 |
| AS401283US | CHP - Capital Health Plan, Inc. | 256 | — | 1 |
| AS26261US | E2CNET - E Squared C Inc. | 256 | — | 1 |
| AS40531US | CVI - Carbon Valley Internet | 256 | — | 1 |
| AS40677US | GLOBALAIR-COM - Globalair.com | 256 | — | 1 |
| AS397963US | DSD2 - Dallas School District No. 2 | 256 | — | 1 |
| AS398234US | HUSCO - HUSCO INTERNATIONAL, INC. | 256 | — | 1 |
| AS394152US | L3-DS - L Cube Strategic Support Services LLC | 256 | — | 1 |
| AS21923US | CS-AS-NAME - CapitalSource Finance LLC | 256 | — | 1 |
| AS40421US | PC-NETBLOCK - Providence College | 256 | — | 1 |
| AS15230US | WARREN-GENERAL-HOSPITAL - Warren General Hospital | 256 | — | 1 |
| AS21997US | APEXCOVANTAGE-192-74-136 - Apex CoVantage, LLC | 256 | — | 1 |
| AS21673US | NGMC-ASN - Northeast Georgia Medical Center, Inc. | 256 | — | 1 |
| AS40352US | RH-UNK - Rapid Hacks LLC | 256 | — | 1 |
| AS393893US | ACS-ASN-01 - Alliance Cloud Services LLC | 256 | — | 1 |
| AS393622US | PAFFORD-MEDICAL-SERVICES - PAFFORD MEDICAL SERVICES | 256 | — | 1 |
| AS32379US | SOUTHERN-GRAPHIC-SYSTEMS-INC - Southern Graphic Systems, LLC | 256 | — | 1 |
| AS393551US | LON-DC-01 - Exiger LLC | 256 | — | 1 |
| AS400321US | ARC-NET - Arcosa, Inc. | 256 | — | 1 |
| AS402179US | LAWNCHAIR - LAWNCHAIR VENTURES LIMITED LIABILITY COMPANY | 256 | — | 1 |