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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 | 24,358 |
| 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 | 4,342 |
| 768 |
| — |
| 3 |
| AS398301US | ARH-ORG - Appalachian Regional Healthcare, Inc. | 768 | — | 3 |
| AS137220US | TII-AS-SG - Texas Instruments, Inc | 768 | — | 3 |
| AS398328US | LOCALHOST-LLC - Localhost LLC | 768 | 4.1K | 4 |
| AS12245US | PRMC-ASN - Peninsula Regional Medical Center | 768 | — | 3 |
| AS53302US | BALTIMORECOUNTYGOVERNMENT - Baltimore County Government | 768 | — | 3 |
| AS23514US | QUANTLAB - QUANTLAB FINANCIAL LLC | 768 | — | 3 |
| AS395502US | JCOLO - JeffColo | 768 | 4 | 7 |
| AS27575US | PROVAK - Providence Hospital | 768 | — | 3 |
| AS393847US | AAMC-AS1 - Association of American Medical Colleges | 768 | — | 3 |
| AS40211US | STEINERSTUDIOS - Steiner Studios | 768 | — | 2 |
| AS400260US | OLSON-NETWORK - Olson Tech, LLC | 768 | 256 | 3 |
| AS395788US | KELLOGGCO - Kellogg Company | 768 | — | 3 |
| AS397676US | VW-QFN-ASN - Qualfon Data Services Group, LLC | 768 | — | 3 |
| AS395315US | TCMC-BGP-01 - Tri-City Medical Center | 768 | — | 2 |
| AS22535US | EPLINC - EPL INC | 768 | — | 3 |
| AS395291US | SC-CORE - Snapchat, Inc | 768 | — | 3 |
| AS11721US | STYLENTECH - StylenTech LLC | 768 | 4 | 7 |
| AS12227US | WBNS-AS-1 - WBNS TV, Inc. | 768 | — | 3 |
| AS40062US | ASCENDLEARNING - Ascend Learning, LLC | 768 | — | 2 |
| AS16756US | ABCV16756 - ABC Virtual Communications, Inc. | 768 | — | 3 |
| AS401933US | HASHIT - HashIT | 768 | — | 3 |
| AS25938US | SOROS-FUND-MAN - Soros Fund Management LLC | 768 | — | 3 |
| AS46106US | JACKSON-HEALTHCARE - Jackson Healthcare, LLC | 768 | — | 3 |
| AS401290US | LSUAA - Louisiana State University at Alexandria | 768 | — | 3 |
| AS22752US | MRCGLOBAL-AS1 - MRC Global (US) Inc. | 768 | — | 2 |
| AS10944US | ABAG-10944 - Association of Bay Area Governments | 768 | — | 3 |
| AS21537US | ENC-01 - Midland Credit Management, Inc. | 768 | — | 3 |
| AS33360US | ITPFIBER - Innovative Tech Pros Corp | 768 | 4.1K | 4 |
| AS15258US | GBCO - Gilbane Building Company | 768 | — | 3 |
| AS394993US | SCVTA - Santa Clara Valley Transportation Authority | 768 | — | 3 |
| AS11385US | LUNA-CDN - Luna USA, LLC | 768 | — | 3 |
| AS397941US | TMHCC-PUBLIC-ASN-01 - HCC Service Company INC | 768 | — | 2 |
| AS32297US | TEPASN - Tucson Electric Power | 768 | — | 3 |
| AS11117US | NUYEK - Nuyek, LLC | 768 | 4.1K | 4 |
| AS214016US | Amarebox-ASN Amarebox LLC | 768 | — | 3 |
| AS53528US | SHARP-ASN - Sharp Electronics Corporation | 768 | — | 3 |
| AS30606US | BHSF - Baptist Health South Florida, Inc. | 768 | — | 3 |
| AS19980US | CAREERED - Career Education Corporation | 768 | — | 2 |
| AS395580US | CENTRAL-BLK - Central College | 768 | 258 | 6 |
| AS16714US | TENNANT-COMPANY - Tennant | 768 | — | 2 |
| AS393320US | FORTY-NINERS-ASN-2024 - Forty Niners Holdings LP | 768 | — | 3 |
| AS397283US | ROCKETNODE - SPARKED HOST LLC | 768 | — | 2 |
| AS397554US | HAPPYCYCLING - Happy Cycling LLC | 768 | 131.1K | 4 |
| AS60281US | WEBAIR-INTERNET-UK WEBAIR INTERNET DEVELOPMENT COMPANY LLC | 768 | — | 3 |
| AS13606US | LEANDERTX-AS1 - City of Leander, Texas | 768 | — | 3 |
| AS23008US | NORC-1 - NORC | 768 | 2 | 5 |