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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) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218M | 24,645 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,307 |
| 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.
32,220 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,890 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,006 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,364 |
| MHPL-3-ASN - MTS Health Partners, L.P. |
| 256 |
| — |
| 1 |
| AS393948US | GSUSA420 - Girl Scouts of the United States of America | 256 | — | 1 |
| AS32494US | ONLINE-TECHNOLOGY - Online Technology Exchange, Inc. | 256 | — | 1 |
| AS401049US | GRYPHO5-01 - Grypho5, LLC | 256 | — | 1 |
| AS22603US | SHARKBACKUP-DALLAS-03 - SharkBackup LLC | 256 | — | 1 |
| AS400379US | COUNTY-OF-MADERA - County of Madera | 256 | — | 1 |
| AS62889US | HMA-ASN1 - Healthcare Management Administrators, Inc. | 256 | — | 1 |
| AS11876US | HFCOMM-AS-01 - HeadFirst Communications | 256 | 256 | 2 |
| AS401823US | KIRKLAND-ELLIS-BR - Kirkland & Ellis LLP | 256 | — | 1 |
| AS401442US | SPUR - Spur Intelligence Corporation | 256 | 2 | 3 |
| AS16878US | FOUNDERS - Utica Mutual Insurance Company | 256 | — | 1 |
| AS395675US | ECHO-GROUP-INC - Echo Group Inc | 256 | — | 1 |
| AS40559US | CROSSCOM - CROSSCOM NATIONAL, LLC | 256 | — | 1 |
| AS23011US | CARRIERX-SD-01 - FreeConferenceCall.com | 256 | — | 1 |
| AS395273US | CBAD-EHCS - Altafiber | 256 | — | 1 |
| AS23032US | FCS-INDUSTRIES-01 - FCS Industries | 256 | — | 1 |
| AS13752US | P1FCU-01 - P1FCU | 256 | — | 1 |
| AS2539US | GLAXOSMITHKLINE - GlaxoSmithKline | 256 | — | 1 |
| AS19620US | PCCH-CARTER - Potawatomi Bingo Casino | 256 | — | 1 |
| AS18691US | ASN-BN-ARVADA - Barber-Nichols, LLC | 256 | — | 1 |
| AS22660US | CL-IND-2401 - Cleveland Indians Baseball Company Limited Partnership | 256 | — | 1 |
| AS399763US | FIVESTAR-TIERPOINT-01 - Issues Management, Inc. | 256 | — | 1 |
| AS36177US | EASTWESTBANK - EWB | 256 | — | 1 |
| AS402058US | QUANTUM-NETWORKS-US1 - QUANTUM | 256 | — | 1 |
| AS402216US | EWL-TTFF-2NM - Town to Farm Fiber | 256 | 256 | 2 |
| AS16470US | WINGNET-AS1 - WingNET Internet Services | 256 | — | 1 |
| AS16872US | PIKE-EXTERNAL-BGP-RAL - Pike Enterprises, LLC | 256 | — | 1 |
| AS23452US | WIND-MTC-BGP-2017 - MCPHERSON COLLEGE | 256 | — | 1 |
| AS55234US | PLEXUSSYSTEMS-US2 - ROCKWELL AUTOMATION Inc. | 256 | — | 1 |
| AS393671US | WABHM - Warren Averett, LLC | 256 | — | 1 |
| AS397503US | DC001POC-01 - Nuvek LLC. | 256 | — | 1 |
| AS398745US | WPCAREY - WPC | 256 | — | 1 |
| AS394782US | SEAPORT - Commonwealth Flats Development Hotel Corp. | 256 | — | 1 |
| AS398828US | MHC-MAIN-AZ - Marana Health Center, INC | 256 | — | 1 |
| AS33643US | JELLYBELLY - Jelly Belly Candy Company | 256 | — | 1 |
| AS397414US | KRMC-01 - Kearney Regional Medical Center LLC | 256 | — | 1 |
| AS36346US | TOGETHER-INFRA - Together Computer, Inc. | 256 | 65.5K | 2 |
| AS54222US | CITY-OF-CEDAR-PARK - City of Cedar Park | 256 | — | 1 |
| AS20296US | EXPEDIA-ARIN - EXPEDIA, INC | 256 | — | 1 |
| AS203414US | ORG-TCGL7-RIPE The Conerly Group, LLC | 256 | — | 1 |
| AS55133US | ST-CROIX-CENTRAL-SCHOOL-DISTRICT - St. Croix Central School District | 256 | — | 1 |
| AS27245US | HEIDRICK-CHICAGO - HEIDRICK | 256 | — | 1 |
| AS29942US | AS29942 - Tanger Properties Limited Partnership | 256 | — | 1 |
| AS394017US | MIMC - Infirmary Health System, Inc. | 256 | — | 1 |
| AS32872US | DIFF-COMP-01 - Difficult Computing, LLC | 256 | 256 | 2 |
| AS395202US | BRADFORD-COUNTY-FLORIDA - Bradford County Board of County Commissioners | 256 | — | 1 |
| AS4576US | ASN1 - Michael & Susan Dell Foundation | 256 | — | 1 |