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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. | 211.1M | 21,138 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,244 |
| 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 | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,674 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,951 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,417 |
| 256 |
| — |
| 1 |
| AS63279US | XKEY - XKEY | 256 | 354 | 10 |
| AS33196US | LJA-ENG-01 - LJA Engineering, Inc. | 256 | — | 1 |
| AS395404US | SEAKR - SEAKR Engineering, LLC | 256 | — | 1 |
| AS402130US | HOMEMAKERS UPSTATE GROUP - Homemakers Upstate Group, Inc. | 256 | — | 1 |
| AS53993US | VWG-NET - Victory Wholesale Group | 256 | — | 1 |
| AS40684US | STCLAIRCCC-AS - St. Clair County Community College | 256 | — | 1 |
| AS400147US | CITY-OF-MODESTO-01-ASN - City of Modesto | 256 | — | 1 |
| AS394258US | AS-WCASD-1 - West Chester Area School District | 256 | — | 1 |
| AS20242US | GCO-HQ - GENESCO INC | 256 | — | 1 |
| AS397414US | KRMC-01 - Kearney Regional Medical Center LLC | 256 | — | 1 |
| AS393993US | CODBBR01 - City of Daytona Beach | 256 | — | 1 |
| AS36659US | JWD-AS1 - J&B Wholesale Distributing, Inc. | 256 | — | 1 |
| AS399766US | LOOK-TO-THE-RIGHT - Look To The Right, LLC | 256 | — | 1 |
| AS393329US | ASHLEY-STEWART - New Ashley Stewart Inc. | 256 | — | 1 |
| AS137937US | TNSI-AS-AP - Transaction Network Services | 256 | — | 1 |
| AS36477US | METHODIST-HEALTH-SYSTEM - Methodist Health System | 256 | — | 1 |
| AS30538US | PTG-INC - Panattoni Technology Group, INC. | 256 | — | 1 |
| AS396381US | GENESISHCS - Genesis Healthcare System | 256 | — | 1 |
| AS32175US | RTD-DENVER - REGIONAL TRANSPORTATION DISTRICT | 256 | — | 1 |
| AS30410US | FCSO1-ASN - First Coast Service Options, Inc. | 256 | — | 1 |
| AS400364US | DSLD-NET01 - DSLD HOMES, LLC | 256 | — | 1 |
| AS394026US | VOS-ASN1 - Village of Schaumburg | 256 | — | 1 |
| AS400135US | JEDUNN - JE DUNN CONSTRUCTION COMPANY | 256 | — | 1 |
| AS17235US | COMTIME - Commercial Time Sharing, Inc. | 256 | — | 1 |
| AS205712US | WEB-TRACTORINFOR Tractorinfor LLC | 256 | 4.1K | 2 |
| AS5755US | SIAM-ASN-01 - SIAM | 256 | 1 | 2 |
| AS401555US | BLOCKCAST-CDN-01 - Blockcast Inc. | 256 | 1 | 2 |
| AS893US | NINJA-IX-FOUNDATION-ASN - Ninja-IX Foundation | 256 | 258 | 4 |
| AS36397US | PALMETTO-CITIZENS-FCU - Palmetto Citizens Federal Credit Union | 256 | — | 1 |
| AS29957US | STANFORD-UC - Stanford University | 256 | — | 1 |
| AS393805US | USSTHQ - The Salvation Army, a Georgia Corporation | 256 | — | 1 |
| AS401749US | GALPERSOL - Galactic Performance Solutions, LLC | 256 | — | 1 |
| AS11903US | LINCOLNSHIRE-MANAGEMENT - Lincolnshire Management, Inc. | 256 | — | 1 |
| AS53406US | DPISD-TX-ASN - Deer Park Independent School District | 256 | — | 1 |
| AS54341US | ULPHYSICIANS1 - University of Louisville Physicians, Inc. | 256 | — | 1 |
| AS16699US | US-HENSELPHELPS-AS01 - Hensel Phelps | 256 | — | 1 |
| AS397789US | SELCO-ASN-01 - SELCO Community Credit Union | 256 | — | 1 |
| AS398295US | IEC-ELECTRONICS-01 - Creation Technologies | 256 | — | 1 |
| AS399620US | NCISD - New Caney ISD | 256 | — | 1 |
| AS62737US | PARINC - Psychological Assessment Resources, Inc. | 256 | — | 1 |
| AS55139US | LDRY - Landry's, Inc. | 256 | — | 1 |
| AS31830US | MURRAY-CALLOWAY-COUNTY-HOSPITAL - Murray-Calloway County Hospital | 256 | — | 1 |
| AS15112US | GATX-CORP - GATX Corporation | 256 | — | 1 |
| AS36171US | STRASMORE - Strasmore, Inc. | 256 | — | 1 |
| AS22073US | CITY-OF-GLENDALE - City of Glendale | 256 | — | 1 |
| AS63291US | ADDUS - Addus Healthcare, Inc | 256 | — | 1 |