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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. | 217.9M | 23,731 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,300 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) | 73.1M | 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,838 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,313 |
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.
32,144 autonomous systems registered to United States. Click an AS for detail.
| AS | Holder | IPv4 ↓ | IPv6 /48 | Prefixes |
|---|---|---|---|---|
| AS46426US | HART-COMMUNICATIONS - HART COMMUNICATIONS, INC. | 16.6K | — | 16 |
| AS19413US | ROANOKE-CONNECT-ASN-1 - Roanoke Connect | 16.6K | — | 24 |
| AS53703US | KWIKOM - KwiKom Communications | 16.6K | 131.1K | 10 |
| AS14763US | STKATE - St. Catherine University | 16.6K | — | 3 |
| AS7091US | VIANET-ASN - Next Level Connect | 16.6K | — | 2 |
| AS27530US | CORNEJO - IBM | 16.6K | — | 2 |
| AS40004US | CONRAD - CONRADIT, LLC | 16.6K | — | 4 |
| AS62658US | WYAN-AS - City of Wyandotte | 16.6K | — | 14 |
| AS40403US | RCS-ASN - Rocks Computer Services, LLC | 16.6K | — | 5 |
| AS394972US | VALLEY-COMMUNICATIONS - Valley Electric Association | 16.6K | — | 45 |
| AS23167US | BAYER-ARCH - Bayer Corporation | 16.6K | — | 20 |
| AS17373US | MCI-COV - Verizon Business | 16.6K | — | 5 |
| AS22736US | CPS - Cincinnati | 16.6K | — | 2 |
| AS14576US | HOSTING-SOLUTIONS - Hosting Solution Ltd. | 16.6K | 2.1M | 65 |
| AS53407US | UTOPIA-FIBER - UTOPIA | 16.6K | 65.5K | 24 |
| AS26097US | LABYRINTH - Labyrinth Solutions Inc | 16.6K | — | 30 |
| AS32907US | STTHOMAS - University of St. Thomas | 16.6K | — | 2 |
| AS14131US | DATAYARD - DataYard | 16.6K | — | 3 |
| AS46969US | STILLWATER-SCHOOLS-ISD834 - Stillwater Area Public Schools | 16.6K | 65.8K | 4 |
| AS62523US | CIRBN-LLC - CIRBN, LLC | 16.6K | 65.5K | 19 |
| AS32719US | BEPC-AS - Basin Electric Power Coop | 16.6K | 65.5K | 27 |
| AS16498US | LASALLE - LaSalle University | 16.6K | — | 2 |
| AS6253US | PRUASN - The Prudential Insurance Company of America | 16.4K | — | 22 |
| AS63092US | ALEA - Alabama Law Enforcement Agency | 16.4K | — | 1 |
| AS26174US | SVSU - Saginaw Valley State University | 16.4K | — | 1 |
| AS6479US | MCHENRY - McHenryCom Company | 16.4K | 65.5K | 2 |
| AS23241US | USA-ICS - Nu Skin International, Inc. | 16.4K | — | 1 |
| AS40926US | SURFAIRWIRELESS-IL-01 - Surf Air Wireless, LLC | 16.4K | — | 13 |
| AS31875US | JACKSON-CO-REMC - Jackson County Rural Electric Membership Corporation | 16.4K | 65.5K | 8 |
| AS13857US | ONLINEMAC - Online Northwest | 16.4K | 65.5K | 10 |
| AS25843US | EVOLVEIP - EvolveIP, LLC | 16.4K | 66K | 27 |
| AS30497US | GTBAS - Global Telecom Brokers | 16.4K | — | 64 |
| AS17185US | D102-PHL-1 - Data102 | 16.4K | — | 7 |
| AS394303US | BIGSCOOTS - BigScoots | 16.4K | — | 11 |
| AS14750US | SIERRA-TEL-INTERNET - Sierra Tel Internet | 16.4K | — | 3 |
| AS26638US | MPLS-PUBLIC-SCHOOLS - Minneapolis Public Schools | 16.4K | — | 4 |
| AS4991US | COGENT-4991-4994 - Cogent Communications, LLC | 16.4K | — | 1 |
| AS394289US | HOPE-COLLEGE - Hope College | 16.4K | — | 1 |
| AS23155US | HTC-NET - HARRISONVILLE TELEPHONE | 16.4K | — | 4 |
| AS22703US | ANTHEM - Elevance Health, Inc. | 16.4K | — | 12 |
| AS16426US | CITYOFCOLUMBUSOHIO - City of Columbus | 16.4K | — | 3 |
| AS16423US | NETTOGO-BLK - NETTOGO | 16.4K | 65.5K | 4 |
| AS398034US | CAU-ASN-14 - Clark Atlanta University | 16.4K | — | 3 |
| AS11579US | LANLINE - LANline Communications Inc | 16.4K | — | 1 |
| AS40918US | DIODE-DILLER - Diode Cable Company | 16.4K | — | 33 |
| AS14818US | CYBERMESA-ASN - Cyber Mesa Computer Systems, Incorporated | 16.4K | 65.5K | 2 |
| AS14038US | DRAKE-UNIVERSITY - Drake University | 16.4K | 1 | 35 |
| AS14628US | SMUD-ELECTRIC - Sacramento Municipal Utility District | 16.4K | — | 25 |
| AS26873US | QCOL-AS - QCOL INC | 16.4K | 65.5K | 18 |
| AS393273US | ESC17-AS - Education Service Center, Region 17 | 16.4K | — | 1 |