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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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 | 24,543 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,304 |
| 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.
32,174 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,884 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,999 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,345 |
| 256 |
| — |
| 1 |
| AS32140US | JEWELRY-TELEVISION - Jewelry Television | 256 | — | 1 |
| AS971US | PUREVOLTAGE - PureVoltage Hosting Inc. | 256 | 4.1K | 2 |
| AS40194US | MARINEBIO - MBL | 256 | — | 1 |
| AS30485US | NASCAR-CLT-PROD - NASCAR Holdings, LLC | 256 | — | 1 |
| AS46229US | MDE - Million Dollar Elm Casino | 256 | — | 1 |
| AS36192US | AS-HOSTCIRCLE-01 - HOSTCIRCLE INC. | 256 | 1 | 2 |
| AS402464US | CNET-PR-01 - Curetopia | 256 | — | 1 |
| AS27490US | AGRACEHOSPICE-MSN-DR - Agrace Hospicecare Inc | 256 | — | 1 |
| AS36082US | BIDS - BIDS Trading L.P. | 256 | — | 1 |
| AS394640US | TSD409-NET - Tahoma School District No. 409 | 256 | — | 1 |
| AS40167US | SCHIFFRINBARROWAY - Schiffrin & Barroway, LLP | 256 | — | 1 |
| AS397129US | LIFESCAN-GLOBAL-CORP - LifeScan Global Corporation | 256 | — | 1 |
| AS63253US | USSFCU-AS - United States Senate Federal Credit Union | 256 | — | 1 |
| AS397364US | MSF-USA-01 - Doctors without Borders USA, Inc. | 256 | — | 1 |
| AS12157US | ECM-ASN - Element Capital Management LLC | 256 | — | 1 |
| AS395625US | FISC-INT-ASN - Financial Institution Service Corp. | 256 | — | 1 |
| AS399329US | ENDRIES-ASN-01 - Endries International, Inc. | 256 | — | 1 |
| AS397483US | ACBO-185 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS397924US | DDRI-ASN1 - Delta Dental of Rhode Island | 256 | — | 1 |
| AS395607US | CASEYS-CORP - Casey's Retail Company | 256 | — | 1 |
| AS397266US | PAPERLESSPOST - Paperless Inc | 256 | — | 1 |
| AS53758US | INVALID-NETWORK - Invalid Network | 256 | 16 | 2 |
| AS14842US | BAUD-AS01 - Baudville, Inc. | 256 | — | 1 |
| AS26945US | AS-AMRI - Curia Global, Inc. | 256 | — | 1 |
| AS32673US | EVERGREEN-TECH-TX - Evergreen Technology Solutions, LLC | 256 | 65.5K | 2 |
| AS62800US | CIRRUS-AIRCRAFT - Cirrus Design Corporation | 256 | — | 1 |
| AS36788US | WREC - Wells Rural Electric Company | 256 | — | 1 |
| AS16998US | ZEUSINC-AS - Zeus Industrial Products, Inc. | 256 | — | 1 |
| AS17218US | LC-647 - Linfield University | 256 | 1 | 2 |
| AS394309US | HOUSTON-BAPTIST-UNIVERSITY - HBU.edu | 256 | — | 1 |
| AS61228US | BGP-NETWORKS-LLC BGP NETWORKS LLC | 256 | 26 | 12 |
| AS401136US | LCI-HQ - LC Industries Inc. | 256 | — | 1 |
| AS393904US | CGTNV - Century Gaming Technologies | 256 | — | 1 |
| AS394062US | COLLEGE-FOUNDATION-INC - College Foundation, Inc. | 256 | — | 1 |
| AS5068US | STACKSINC-GLOBAL - STACKS INC | 256 | 1 | 2 |
| AS393803US | DT-DDS - Dealertrack, Inc. | 256 | — | 1 |
| AS398409US | ESPVA - EyeCare Services Partners Management LLC | 256 | — | 1 |
| AS40137US | AWM-INVESTMENT - AWM Investment Company, Inc. | 256 | — | 1 |
| AS32378US | HQ-LUMEN-SPECTRUM - OptumServe Health Services, Inc. | 256 | — | 1 |
| AS399799US | BOLD-FURMAN - Apogee Telecom Inc. | 256 | — | 1 |
| AS21514US | LEGACY - LEGACY MARKETING PARTNERS, L.L.C. | 256 | — | 1 |
| AS26558US | FREEWHEEL - Freewheel Media Inc. | 256 | — | 1 |
| AS54663US | HALIFAXHEALTH-WEBAPPS - Halifax Health | 256 | — | 1 |
| AS30056US | VUBIQUITY - Avail Media | 256 | — | 1 |
| AS1075US | AS-WITC-01 - Wiseinfotec.net LLC | 256 | — | 1 |
| AS27296US | WU-PRIMARY - Wilmington University, Inc. | 256 | — | 1 |