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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 |
| AS16661US | INFOSECEDU - Hack This LLC | 256 | 256 | 2 |
| AS33712US | APOG-DOWNSTATE - Apogee Telecom Inc. | 256 | — | 1 |
| AS398894US | PRSD - Pine-Richland School District | 256 | 1 | 2 |
| AS403140US | BLUEGRASS-FIBER - Bluegrass | 256 | — | 1 |
| AS32658US | PINELLAS-COUNTY-SO - Pinellas County Government | 256 | — | 1 |
| AS394553US | SARC-01 - Samsung Austin Research and Development Center | 256 | — | 1 |
| AS395664US | ALTIUS-INSTITUTE-FOR-BIOMEDICAL-SCIENCES - Altius Institute for Biomedical Sciences | 256 | — | 1 |
| AS971US | PUREVOLTAGE - PureVoltage Hosting Inc. | 256 | 4.1K | 2 |
| AS54684US | PPD-WILMINGTON - PPDI | 256 | — | 1 |
| AS23476US | CENTRICAZ-ASN - Centric Fiber Arizona | 256 | — | 1 |
| AS40902US | CURTISS-WRIGHT-EMS - Curtiss-Wright Electro-Mechanical Corporation | 256 | — | 1 |
| AS395104US | DKM5-ARIN - The Reynolds and Reynolds Company | 256 | — | 1 |
| AS394693US | PLCU-NET - Point Loma Credit Union | 256 | — | 1 |
| AS33093US | NEOGOV - NEOGOV | 256 | — | 1 |
| AS22479US | SUNYWCC - SUNY Westchester Community College | 256 | — | 1 |
| AS22119US | LEE-EQ1 - Lee Equity Partners LLC | 256 | — | 1 |
| AS32140US | JEWELRY-TELEVISION - Jewelry Television | 256 | — | 1 |
| AS46187US | SPY - International Spy Museum | 256 | — | 1 |
| AS26555US | AVMLP - AVM,LP | 256 | — | 1 |
| AS40691US | CCSBUSINESSSOL - CCS Business Solutions, Inc. | 256 | — | 1 |
| AS400797US | PIC-EXT - Ping Identity Corporation | 256 | 1 | 2 |
| AS54360US | USJ-ASN - USJ | 256 | — | 1 |
| AS394702US | MGE - MADISON GAS AND ELECTRIC FOUNDATION, INC. | 256 | — | 1 |
| AS402568US | AVERSON-IT - Averson | 256 | 256 | 2 |
| AS23086US | POUNDBANG-HOSTING - Pound Bang Incorporated | 256 | — | 1 |
| AS398314US | ELDORADO-205 - Mphasis Eldorado | 256 | — | 1 |
| AS397918US | ADIDAS-AMERICA - adidas America, Inc. | 256 | — | 1 |
| AS23295US | NSWL-3-23295 - Northern Skies Wireless LLC | 256 | — | 1 |
| AS32777US | SMART-CITY-IXCC - SMART CITY NETWORKS, LIMITED PARTNERSHIP | 256 | — | 1 |
| AS397138US | JUSTUS-AS - The Vegetable Group | 256 | 1 | 2 |
| AS53642US | CCUSD-301 - Central Community Unit School District 301 | 256 | — | 1 |
| AS218739US | ORG-OCL44-AS Orbis Connect LLC | 256 | — | 1 |
| AS40072US | TCSG - Technical College System of Georgia | 256 | — | 1 |
| AS397620US | CITYMENLOPARK - City of Menlo Park | 256 | — | 1 |
| AS399463US | UCOMTEL-02 - UComtel Inc | 256 | — | 1 |
| AS13556US | IVANET-MIAMI - IBASIS INC. | 256 | — | 1 |
| AS54958US | LWS-01 - LAW Wireless, LLC | 256 | — | 1 |
| AS396152US | MC-AS - The Monroe Clinic, Inc. | 256 | 1 | 2 |
| AS402553US | CAV-PROD-AS-01 - Cavnue | 256 | 1 | 2 |
| AS11457US | DIGITALREALTY-IT-03 - Digital Realty Trust, L.P. | 256 | — | 1 |
| AS19537US | UPPER-ARLINGTON-SCHOOLS-OH - Upper Arlington City School District | 256 | 256 | 2 |
| AS399421US | EMI-HEALTH - EDUCATORS MUTUAL INSURANCE ASSOCIATION | 256 | — | 1 |
| AS401404US | VIPERHOST-LLC - ViperHost LLC | 256 | — | 1 |
| AS394628US | SQUARE-CORP - Square, Inc. | 256 | 65.5K | 4 |
| AS32384US | MILLERWELDSASN01 - MILLER Electric Mfg. Co. | 256 | — | 1 |
| AS397703US | APOG-GRAMBLING - Apogee Telecom Inc. | 256 | — | 1 |