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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 | 24,346 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 512 |
| — |
| 1 |
| AS3788US | TEXAS-DOT - Texas Department of Transportation | 512 | — | 2 |
| AS16647US | PERIMETERWATCH - Perimeterwatch Technologies, INC | 512 | — | 2 |
| AS11964US | AWAC-HQ - Air Wisconsin Airlines Corporation | 512 | — | 2 |
| AS17317US | THING5-NA - Thing5, LLC | 512 | — | 2 |
| AS25618US | SHINE - SHINESHAN | 512 | 256 | 3 |
| AS20163US | SUNMED - Sunrise Medical, Inc. | 512 | — | 2 |
| AS17031US | WINSTON-SALEM-SCHOOLS - Winston-Salem/Forsyth County Schools | 512 | — | 1 |
| AS14697US | SCS-AS - SUPERIOR CENTRAL STATION, INC. | 512 | — | 1 |
| AS396918US | APPLE-BANK-FOR-SAVINGS - Apple Bank for Savings | 512 | — | 2 |
| AS54834US | CDP - CUSTOM DATA PROCESSING | 512 | — | 2 |
| AS40686US | HBK-ROSEWOOD - HBK Services LLC | 512 | — | 2 |
| AS3967US | NSM350 - Nationstar Mortgage, LLC | 512 | — | 2 |
| AS23447US | NETTECH-ASN01 - NetTech, LLC | 512 | — | 2 |
| AS401164US | EPS - Elizabeth Board of Education | 512 | 514 | 6 |
| AS400458US | FEXTEL-DC - ViciDial Group | 512 | 1 | 3 |
| AS53533US | ENTRA-3 - Entravision Communications Corporation | 512 | — | 2 |
| AS36589US | BNCBASHQBRNJ - BARNES & NOBLE COLLEGE BOOKSELLERS | 512 | — | 2 |
| AS395772US | AHC-AS - Augusta Health Care, Inc | 512 | — | 2 |
| AS46411US | IDA-ATL-NET-ASN - LexisNexis Risk Solutions FL Inc. | 512 | — | 2 |
| AS400452US | UC-DAVIS-HEALTH - University of California Davis Medical Center | 512 | — | 2 |
| AS395105US | JDAWI2 - Blue Yonder, Inc | 512 | — | 2 |
| AS395132US | MWCU - Meriwest Credit Union | 512 | — | 2 |
| AS398847US | GTE-FINANCIAL01 - GTE Financial | 512 | — | 2 |
| AS27434US | DG-FASTCHANNEL - DG | 512 | — | 2 |
| AS401363US | LYNCROSS - Lyncross LLC | 512 | 2 | 4 |
| AS399187US | COB-MN-US - City of Bloomington | 512 | — | 2 |
| AS11145US | VRIS-11145-11149 - Verizon Business | 512 | — | 1 |
| AS397999US | TGNA-WPMT - TEGNA Inc. | 512 | — | 2 |
| AS16534US | HANWECK-ASSOCIATES-LLC - Cboe | 512 | — | 2 |
| AS396254US | ALARIS-1 - Kodak Alaris | 512 | — | 2 |
| AS397430US | KANE-COUNTY-GOV - County of Kane | 512 | — | 1 |
| AS46283US | SEARCY-MAIN-CAMPUS - Harding University, Inc. | 512 | — | 2 |
| AS46971US | FIBXTERNALIP - First Interstate Bank | 512 | — | 2 |
| AS31986US | TENASKA-INC - Tenaska, Inc. | 512 | — | 2 |
| AS400952US | KISSUSA-GA - KISS NAIL PRODUCTS, INC | 512 | — | 2 |
| AS394932US | MOUNTAIN-INET-TFP - Mountain iNet, Inc. | 512 | — | 2 |
| AS20339US | RR-CENTRAL - Rosenthal & Rosenthal Inc. | 512 | — | 2 |
| AS27636US | SHERATONLJ-GUEST-INTERNET - Sheraton La Jolla Hotel | 512 | — | 1 |
| AS62756US | DOTBLOCK-2 - HostRocket.com, Inc. | 512 | 256 | 2 |
| AS400232US | DAMBROUKA - Dambrouka Inc. | 512 | 3 | 4 |
| AS32236US | TRANSCOM-BGP-01 - TRANSCOM | 512 | — | 2 |
| AS393798US | CPSHR-NET - Cooperative Personnel Services | 512 | — | 1 |
| AS33016US | SMFE-BB - Payward, Inc. | 512 | — | 2 |
| AS14786US | ALLURETELECOM - Allure Telecom Inc | 512 | — | 2 |
| AS395617US | PLYMOUTH - Plymouth Poultry Company | 512 | — | 2 |
| AS3952US | TELLABS-ASN - Nokia of America Corporation | 512 | — | 1 |