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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 |
| — |
| 1 |
| AS26093US | HAR - Houston Association of Realtors | 256 | — | 1 |
| AS402744US | GSA-NET-01 - GRC | 256 | — | 1 |
| AS1861US | DISN-PILOTNET7 - RTX BBN Technologies, Inc. | 256 | — | 1 |
| AS395619US | THE-COLLEGE-OF-THE-FLORIDA-KEYS - The College of Florida Keys | 256 | — | 1 |
| AS36115US | AS-DCPA - Denver Center for the Performing Arts | 256 | — | 1 |
| AS22899US | UMICO - Utica Mutual Insurance Company | 256 | — | 1 |
| AS396322US | PC-ASN - Peace Corps | 256 | 516 | 7 |
| AS397959US | ADTELL-SHIP-01 - Adtell Integration | 256 | — | 1 |
| AS397462US | CSPI-MSP-1 - CSPi Technology Solutions | 256 | — | 1 |
| AS31780US | TRINITYPARTNERSWALTHAMCONNECTION - TRINITY PARTNERS | 256 | — | 1 |
| AS35966US | AEW-AS - AEW Capital Management LP | 256 | — | 1 |
| AS400785US | MALL OF AMERICA - MALL OF AMERICA | 256 | — | 1 |
| AS35841US | CHATS-ASN - CHATSWORTH PRODUCTS, INC. | 256 | — | 1 |
| AS40700US | WILINE - WiLine Networks Inc. | 256 | — | 1 |
| AS398245US | TS-AS-1011 - Trithium Solutions LLC | 256 | — | 1 |
| AS399999US | LYON-BV-01 - LYON COLLEGE | 256 | — | 1 |
| AS400386US | APOG-MHMC - Apogee Telecom Inc. | 256 | — | 1 |
| AS4940US | IAP-WORLDWIDE-SERVICES - IAP World Service Inc | 256 | — | 1 |
| AS32599US | DOTERRA-NET - doTERRA International, LLC | 256 | — | 1 |
| AS399540US | ABSCI-US-001 - AbSci Corporation | 256 | — | 1 |
| AS25989US | STONEEAGLE - StoneEagle Insurance Systems, Inc. | 256 | — | 1 |
| AS54839US | EMPIRE - Intelliracks Managed Hosting | 256 | — | 1 |
| AS30074US | WIFIBER-NETWORK-01 - WiFiber Corp. | 256 | — | 1 |
| AS398483US | SRS-PHARMACY - SRS Pharmacy Systems, Inc. | 256 | 1K | 2 |
| AS19415US | PAUL-BUNYAN-TECHNOLOGIES-01 - Paul Bunyan Technologies, LLC | 256 | 256 | 2 |
| AS394988US | FLCC-AS - Finger Lakes Community College | 256 | — | 1 |
| AS400895US | SAMSUNG-ELECTRONICS-AMERICA - Samsung Electronics America, Inc. | 256 | — | 1 |
| AS6092US | HARFORDCC-AS - Harford Community College | 256 | — | 1 |
| AS396295US | CALIBER-SOUTH - Caliber South, LLC | 256 | 65.5K | 2 |
| AS398403US | SSI - Alarm Detection Systems, Inc | 256 | — | 1 |
| AS46631US | CITYOFWHEATON - City of Wheaton | 256 | — | 1 |
| AS14321US | SERVICIO-UNITELLER - Servicio Uniteller, Inc. | 256 | — | 1 |
| AS3856US | PCH-AS - Packet Clearing House, Inc. | 256 | 1 | 2 |
| AS395750US | BHC-ASN1 - Baptist Health Care, Inc, | 256 | — | 1 |
| AS40825US | PAML-ASN - Pinnacle Asset Management, LP | 256 | — | 1 |
| AS32649US | FE-DC-BGP - FRANKLIN ELECTRIC CO., INC. | 256 | — | 1 |
| AS400228US | STARLIGHTFIBER - Starlight Fiber Ltd | 256 | 8 | 2 |
| AS55187US | AC-CHARTER-WINDTREAM - Assumption University | 256 | — | 1 |
| AS398055US | MPS-303-AS - Mapleton School District No. 1 in the county of Adams & St. | 256 | — | 1 |
| AS11981US | AS-REUBENONLINE - Yolo Risk Management LLC | 256 | 256 | 2 |
| AS401511US | MULLINAX-AUTOMOTIVE - Mullinax Ford | 256 | 2 | 3 |
| AS396081US | OTC-ASN-DC2 - Oriental Trading Company, Inc. | 256 | — | 1 |
| AS400359US | APETORO - ApeToro LLC | 256 | — | 1 |
| AS10248US | BLUE-RIDGE-BANKSHARES-ASN - Blue Ridge Bankshares, Inc. | 256 | — | 1 |
| AS393943US | SECOENERGY - Sumter Electric Cooperative, Inc. | 256 | — | 1 |
| AS53749US | MWT - Midwest Tape | 256 | — | 1 |