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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 | 24,656 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| 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.
32,202 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| 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 | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 256 |
| — |
| 1 |
| AS401155US | WIGELSWORTH - Wigelsworth Consulting Corp | 256 | 16 | 2 |
| AS399943US | FIGFCU-P1 - Farmers Insurance Group Federal Credit Union | 256 | — | 1 |
| AS63030US | MY-SIMPLE-ISP - My Simple ISP LLC | 256 | — | 1 |
| AS395858US | RAVINIA-BGP - RAVINIA FESTIVAL ASSOCIATION | 256 | — | 1 |
| AS402566US | MODERN-CONNECTIVITY - Modern | 256 | 4.1K | 2 |
| AS393470US | BLACKLIST - Mocan Media LLC | 256 | — | 1 |
| AS398874US | LOSTCREEKTECHASN-01 - Lost Creek Technology L.L.C. | 256 | 4.1K | 2 |
| AS393762US | RSCSAS - Restaurant Supply Chain Solutions, LLC | 256 | — | 1 |
| AS2020US | ADHESIVE-ASN - Adhesives Research, Inc. | 256 | — | 1 |
| AS8132US | ENTEX - ENTEX Information Services | 256 | — | 1 |
| AS19827US | CCC-AS - City of Carson City | 256 | — | 1 |
| AS394658US | TSG-INET-01 - Sedona Technologies | 256 | — | 1 |
| AS36732US | COMCAST-36732 - Comcast Cable Communications, LLC | 256 | — | 1 |
| AS54721US | AS-NGEN - NGEN Networks | 256 | 5 | 6 |
| AS46801US | RITAOHIO - Regional Income Tax Agency | 256 | — | 1 |
| AS63316US | CITY-OF-FOSTER-CITY - City of Foster City | 256 | — | 1 |
| AS29783US | AS29783 - Basswood Capital Management LLC | 256 | — | 1 |
| AS400208US | SKAGIT911-ASN-NO - Skagit 911 | 256 | — | 1 |
| AS32049US | SULLCROM - SULLCROM | 256 | — | 1 |
| AS402158US | CYBERFOREST-LLC - CyberForest | 256 | — | 1 |
| AS401640US | BULKVM - BULKVM LLC | 256 | 1 | 2 |
| AS393893US | ACS-ASN-01 - Alliance Cloud Services LLC | 256 | — | 1 |
| AS54435US | THE-WESTMINSTER-SCHOOLS - The Westminster Schools, INC | 256 | — | 1 |
| AS393804US | MIDLANDPAPER - Midland Paper Company | 256 | — | 1 |
| AS398460US | MVLS-SALS - Southern Adirondack Library System | 256 | — | 1 |
| AS54414US | RESPEC - Respec Inc | 256 | — | 1 |
| AS12095US | CNNX-01 - CONNEXUS CREDIT UNION | 256 | — | 1 |
| AS54786US | ACT-ASN - ACT Education Corp. | 256 | — | 1 |
| AS21923US | CS-AS-NAME - CapitalSource Finance LLC | 256 | — | 1 |
| AS40397US | FIRST-MANHATTAN - First Manhattan Co. | 256 | — | 1 |
| AS26005US | CALLAWAYGOLF - Callaway Golf | 256 | — | 1 |
| AS36157US | ACER AMERICA CORPORATION - Acer America Corporation | 256 | — | 1 |
| AS18999US | SAINTANDREWS-1 - SAINT ANDREW'S SCHOOL OF BOCA RATON, INC. | 256 | — | 1 |
| AS40549US | XPRES-PA - XPRESSBET INC. | 256 | — | 1 |
| AS40159US | PRINCETON-REGIONAL-SCHOOLS - Princeton Public Schools | 256 | — | 1 |
| AS394426US | COM-AS - City of Maricopa | 256 | — | 1 |
| AS395218US | GATESCORP - GATES CORPORATION | 256 | — | 1 |
| AS402935US | CITY-OF-BELGRADE-MT - City | 256 | 1 | 2 |
| AS39950US | STARC-15-39950 - STARCREST PRODUCTS OF CALIFORNIA, INC. | 256 | — | 1 |
| AS4902US | CI-CCASN - CONSERVATION INTERNATIONAL FOUNDATION | 256 | — | 1 |
| AS400095US | CLOUDFLARENET - Cloudflare, Inc. | 256 | 1 | 2 |
| AS397448US | DBSL-WQG-01 - DH Business Services LLC | 256 | — | 1 |
| AS32230US | PRESTIGEFINANCIAL1420 - Prestige Financial Services | 256 | — | 1 |
| AS394870US | ASSURITY - Assurity Group Inc | 256 | — | 1 |
| AS46152US | SLG - SL Green Realty Corp | 256 | — | 1 |
| AS400723US | SPS-US-MSP-DC1 - SPS Commerce, Inc. | 256 | — | 1 |