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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 | 3,140 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,178 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,241 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 373 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,667 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,946 |
| AS701US | UUNET - Verizon Business | 43.6M | 999 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,371 |
| 768 |
| 65.5K |
| 3 |
| AS7723US | EMERGENCY24-AS - Emergency 24 | 768 | — | 3 |
| AS397994US | XACTLY-01 - Xactly Corporation | 768 | 3 | 6 |
| AS402192US | NOVA01 - The Nova Telephone Company | 768 | — | 2 |
| AS40827US | HUDSON-RIVER-TRADING-LLC - Hudson River Trading LLC | 768 | — | 3 |
| AS395982US | WKMC-ASN - Willis-Knighton Medical Center | 768 | — | 3 |
| AS22475US | MVP - MVP Health Plan Inc. | 768 | — | 2 |
| AS40812US | XTC-WIRELESS - XTC Limited Company | 768 | — | 3 |
| AS397941US | TMHCC-PUBLIC-ASN-01 - HCC Service Company INC | 768 | — | 2 |
| AS26694US | ADMIS-AS - Adm Investor Services, Inc | 768 | — | 3 |
| AS400001US | DULUTHTRADING - Duluth Holdings Inc. | 768 | — | 2 |
| AS22395US | TORNADOCOMP - Tornado Computer Systems, Inc. | 768 | — | 2 |
| AS53302US | BALTIMORECOUNTYGOVERNMENT - Baltimore County Government | 768 | — | 3 |
| AS46725US | ESC19-ASN - Education Service Center-Region 19 | 768 | — | 3 |
| AS31913US | CPCHEM - Chevron Phillips Chemical Company LP | 768 | — | 2 |
| AS40175US | HEALTHSOUTH - Encompass Health Corporation | 768 | — | 3 |
| AS26325US | TECHCU-AS - Technology Credit Union | 768 | — | 3 |
| AS1911US | DNIC-ASBLK-01910-01914 - United States Department of Defense (DoD) | 768 | — | 3 |
| AS397676US | VW-QFN-ASN - Qualfon Data Services Group, LLC | 768 | — | 3 |
| AS26974US | BIGBYTECC - bigbyte.cc Corp | 768 | — | 3 |
| AS393585US | HSI-WST-28500 - Hyland Software, Inc. | 768 | — | 3 |
| AS29716US | ASNOTS - Otsuka America Pharmaceutical, Inc. | 768 | — | 3 |
| AS40211US | STEINERSTUDIOS - Steiner Studios | 768 | — | 2 |
| AS14541US | GE-AIRCRAFT-ENGINES - GE AIRCRAFT ENGINES | 768 | — | 3 |
| AS30276US | GDCNET---GREEN-DOT-CORPORATION - Green Dot Corporation | 768 | — | 3 |
| AS394993US | SCVTA - Santa Clara Valley Transportation Authority | 768 | — | 3 |
| AS26447US | SHUTTERFLY - Shutterfly, LLC | 768 | — | 3 |
| AS23008US | NORC-1 - NORC | 768 | 2 | 5 |
| AS16848US | NEXG-NOC - NexG | 768 | — | 2 |
| AS398301US | ARH-ORG - Appalachian Regional Healthcare, Inc. | 768 | — | 3 |
| AS394344US | NETACTUATE - NetActuate, Inc | 768 | 4.1K | 4 |
| AS32863US | TRINSICTECH - Trinsic Technologies, Inc. | 768 | — | 3 |
| AS401290US | LSUAA - Louisiana State University at Alexandria | 768 | — | 3 |
| AS54174US | BCBST - BlueCross BlueShield of Tennessee | 768 | — | 3 |
| AS29823US | PBC-WA - Premera Blue Cross | 768 | — | 2 |
| AS12242US | NEL-ASN - Nodal Exchange, LLC | 768 | — | 2 |
| AS398170US | WPAFN - WPA Fiber Network LLC | 768 | 65.5K | 3 |
| AS13412US | VULCAN-LLC - Vulcan LLC | 768 | — | 3 |
| AS21835US | SCARSDALE-SECURITY-SYSTEMS - Scarsdale Security Systems, Inc. | 768 | 65.5K | 4 |
| AS46496US | WTNC-INTERNAL-ISP - Washoe Tribe of Nevada and California | 768 | — | 3 |
| AS12287US | AS-AFILIAS-CTRL1 - Afilias, Inc. | 768 | 1 | 4 |
| AS40238US | JOSTENS - Jostens | 768 | — | 3 |
| AS17301US | FASTENAL - Fastenal Company | 768 | — | 2 |
| AS40955US | REDHAT-DC-BOS2 - Red Hat, Inc. | 768 | 1 | 3 |
| AS54838US | NWINC-01 - Networks Inc | 768 | — | 3 |
| AS26343US | SPT-ASN-001 - Global Payments Inc. | 768 | — | 3 |
| AS40062US | ASCENDLEARNING - Ascend Learning, LLC | 768 | — | 2 |