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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,661 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 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 | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,490 |
| 512 |
| — |
| 2 |
| AS53542US | MESNET - MERCHANT ESOLUTIONS, INC. | 512 | — | 2 |
| AS394575US | AFS-IEP - Accenture Federal Services LLC | 512 | — | 2 |
| AS30116US | WNI-NORMAN - WEATHERNEWS AMERICA INC. | 512 | — | 2 |
| AS36366US | LOGIXCOMM-AS5 - Logix | 512 | — | 2 |
| AS47039US | NGLI-11-47039 - National Guardian Life Insurance Company | 512 | — | 2 |
| AS63340US | SPA-2001NETWORK - Systems Planning and Analysis, Inc. | 512 | — | 2 |
| AS17174US | WALMART-INDIA - Wal-Mart Stores, Inc. | 512 | — | 2 |
| AS397323US | MEM - MISSOURI EMPLOYERS MUTUAL INSURANCE COMPANY | 512 | — | 2 |
| AS30572US | NYCB-NEW-YORK-COMMUNITY-BANCORP-INC - New York Community Bancorp Inc. | 512 | — | 2 |
| AS400065US | SCION-BACKBONE - Princeton University | 512 | — | 1 |
| AS394301US | DEXCOM-INC - Dexcom, INC. | 512 | — | 2 |
| AS54152US | BSC-BRANCHOFFICE01 - Blue Shield of California | 512 | — | 2 |
| AS54893US | AUTOLOOP - AutoLoop | 512 | — | 2 |
| AS21801US | JEWELERS - Jewelers Mutual Insurance Company | 512 | — | 2 |
| AS398809US | OSW - One Spa World LLC | 512 | — | 1 |
| AS17278US | IONACOLLEGE - Iona University | 512 | — | 2 |
| AS11651US | AS-TKCHOLDINGS-LLC - Centric Group, LLC | 512 | — | 2 |
| AS393917US | CVE - Cache Valley Electric Company | 512 | — | 2 |
| AS27535US | DEPLOYPORT - Deployport LLC | 512 | — | 2 |
| AS36074US | 3330-TMMC - Torrance Memorial Medical Center | 512 | — | 2 |
| AS30423US | AMEDI-3-ASN1 - Amedisys, Inc. | 512 | — | 2 |
| AS13554US | TPS-TX-AS - Tenaska Power Services, Co. | 512 | — | 2 |
| AS18669US | BSEC-CA-1 - Bal Seal Engineering Co. Inc. | 512 | — | 2 |
| AS36279US | MISERI-COLLEGE-1 - Misericordia University | 512 | — | 2 |
| AS30438US | RESOLVE-BGP01 - Resolve I.T. | 512 | 1 | 3 |
| AS30259US | BROADASPECT - BroadAspect | 512 | — | 2 |
| AS393366US | CENTRA-5 - Centra Health, Inc. | 512 | — | 2 |
| AS30518US | AS-SELF-REGIONAL-HEALTHCARE - Self Regional Healthcare | 512 | — | 2 |
| AS30593US | VORNADO-PUBLIC - Vornado Realty Trust | 512 | — | 2 |
| AS36565US | COUNTY-OF-MONTGOMERY-PA - County of Montgomery | 512 | — | 2 |
| AS397990US | WILLIAMSLABS-LLC - Williamslabs LLC | 512 | 17 | 4 |
| AS54143US | HEHENET - i9 Technologies | 512 | 65.5K | 3 |
| AS33088US | COMPSYCH-AS - COMPSYCH EMPLOYEE ASSISTANCE PROGRAMS, INC. | 512 | — | 2 |
| AS33016US | SMFE-BB - Payward, Inc. | 512 | — | 2 |
| AS27583US | REGISCORP - Regis Corporation | 512 | — | 2 |
| AS394736US | DAYZIM - The Day & Zimmermann Group, Inc. | 512 | — | 2 |
| AS199518US | GSHAPIRO-AS Gregory Shapiro | 512 | 17 | 19 |
| AS46658US | TRANSMON119 - Transmontaigne Product Services, Inc. | 512 | — | 2 |
| AS398207US | EAITECH-ASN-01 - EAI Technologies | 512 | — | 2 |
| AS17308US | WECU-ASN - Whatcom Educational Credit Union | 512 | — | 1 |
| AS36833US | DVTRADING-LLC - DV TRADING, LLC | 512 | — | 2 |
| AS213684US | Azalea Azalea Systems LLC | 512 | — | 2 |
| AS46548US | ASN1 - New york City Housing Development Corporation | 512 | — | 2 |
| AS54765US | MANAGEMENT-INVESTMENT-CORPORATION - Management Investment Corporation | 512 | — | 1 |
| AS32412US | HOLX - HOLOGIC INC | 512 | — | 2 |
| AS15007US | TZUCHI - Buddhist Tzu Chi Foundation | 512 | — | 2 |