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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. | 218.1M | 24,635 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,220 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 | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,003 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,360 |
| 256 |
| — |
| 1 |
| AS398405US | MMH-BGP-01 - Montrose Memorial Hospital | 256 | — | 1 |
| AS11132US | ASMSA-AS - ARKANSAS SCHOOL FOR MATHEMATICS, SCIENCES & THE ARTS | 256 | — | 1 |
| AS393633US | PRMC-ASN1 - Pratt Regional Medical Center | 256 | — | 1 |
| AS214022US | VIRTNET Joseph Rawlings trading as Virtnet.bond | 256 | 263 | 6 |
| AS40017US | PPD-RESEARCH-TRIANGLE-PARK-NC - PPDI | 256 | — | 1 |
| AS17080US | CHUUNILAB-01 - Chuunilab Corp. | 256 | 1 | 2 |
| AS46651US | OMD3 - Optimized Micro Devices LLC | 256 | — | 1 |
| AS398304US | THE-IT-GUY - The IT Guy | 256 | — | 1 |
| AS26849US | AGFIRST-FARM-CREDIT-BANK - AgFirst Farm Credit Bank | 256 | — | 1 |
| AS398438US | MGCCC - Mississippi Gulf Coast Community College | 256 | — | 1 |
| AS25622US | TSYS-SDC-CONTACT-CENTER-WFH - Global Payments Inc. | 256 | — | 1 |
| AS10545US | LCOL - University of Lynchburg | 256 | — | 1 |
| AS395651US | TAHOEIX - Tahoe Internet Exchange (TahoeIX) | 256 | 1 | 2 |
| AS63038US | DELIBRARY - Delaware Division of Libraries, State of Delaware | 256 | — | 1 |
| AS19525US | 3E-COMPANY - 3E COMPANY ENVIRONMENTAL, ECOLOGICAL AND ENGINEERING | 256 | — | 1 |
| AS26066US | NVUSD - Napa Valley Unified School District | 256 | — | 1 |
| AS19769US | COF-KDC - Capital One Financial Corporation | 256 | — | 1 |
| AS26786US | BETANXT-1 - BetaNXT, Inc. | 256 | — | 1 |
| AS400483US | APOG-VISTA-DEL-CAMPO - Apogee Telecom Inc. | 256 | — | 1 |
| AS394523US | HILLNET - The Hill School | 256 | — | 1 |
| AS54493US | ASPEN-VALLEY-HOSPITAL - Aspen Valley Hospital | 256 | — | 1 |
| AS401874US | CRM-080 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS402067US | NACC-46-AS - NorthWest Arkansas Community College | 256 | — | 1 |
| AS22618US | GWK-LLC - Gannett Welsh & Kotler LLC | 256 | — | 1 |
| AS394017US | MIMC - Infirmary Health System, Inc. | 256 | — | 1 |
| AS33155US | ATS-NET - ADVANCED TECHNOLOGY SERVICES, INC. | 256 | — | 1 |
| AS395392US | FASCETDR - Fascet LLC | 256 | — | 1 |
| AS54436US | HSD-WA-401 - Highline School District | 256 | — | 1 |
| AS1670US | ANS-UK - Verizon Business | 256 | — | 1 |
| AS398140US | WBGAMES-SLC - WB Games Inc. | 256 | — | 1 |
| AS55133US | ST-CROIX-CENTRAL-SCHOOL-DISTRICT - St. Croix Central School District | 256 | — | 1 |
| AS11665US | NORTH-RIDGE - North Ridge | 256 | 4.1K | 2 |
| AS401588US | INNOWAVE - InnoWave Solution LLC | 256 | 256 | 2 |
| AS401269US | GREENVILLEWATER - Greenville Water | 256 | — | 1 |
| AS33390US | READYTECH - READYTECH CORPORATION | 256 | — | 1 |
| AS393999US | ALPINEWEB - AlpineWEB | 256 | — | 1 |
| AS19745US | OKTA - Okta, Inc. | 256 | 3 | 4 |
| AS205602US | BRINSTAR Seamus Caveney | 256 | 259 | 5 |
| AS30669US | CAMDEN-NATIONAL - Camden National Bank | 256 | — | 1 |
| AS396175US | PSC - PEGASUS SOLUTIONS COMPANIES | 256 | — | 1 |
| AS398554US | SKYWORKSINC - Skyworks Solutions, Inc | 256 | — | 1 |
| AS402017US | RAFASN01 - Radiologic Associates of Fredericksburg, LTD. | 256 | — | 1 |
| AS397512US | BGP-HQ-01 - The College of American Pathologists | 256 | — | 1 |
| AS395389US | LIFEPOINTHEALTH - LEGACY LIFEPOINT HEALTH, LLC | 256 | — | 1 |
| AS62826US | CSO-AS - CHICAGO SYMPHONY ORCHESTRA | 256 | — | 1 |
| AS398280US | SYSTEMVERSE-ARIN-01 - Systemverse LLC | 256 | 4.1K | 2 |