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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) | 227.4M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 217.9M | 24,749 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,322 |
| 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.
32,226 autonomous systems registered to United States. Click an AS for detail.
| 72.9M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,906 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.7M | 4,282 |
| 16.4K |
| — |
| 1 |
| AS19870US | CCSD - Cherry Creek School District #5 | 16.4K | — | 3 |
| AS31791US | REGION16-ESC - Region 16 Education Service Center | 16.4K | 65.5K | 2 |
| AS18982US | US-SIGNAL-CO01 - US Signal Company, L.L.C. | 16.4K | 256 | 4 |
| AS398034US | CAU-ASN-14 - Clark Atlanta University | 16.4K | — | 3 |
| AS11579US | LANLINE - LANline Communications Inc | 16.4K | — | 1 |
| AS26174US | SVSU - Saginaw Valley State University | 16.4K | — | 1 |
| AS25843US | EVOLVEIP - EvolveIP, LLC | 16.4K | 66K | 27 |
| AS14818US | CYBERMESA-ASN - Cyber Mesa Computer Systems, Incorporated | 16.4K | 65.5K | 2 |
| AS16423US | NETTOGO-BLK - NETTOGO | 16.4K | 65.5K | 4 |
| AS32629US | CITY-OF-CHARLOTTE-ASN - City of Charlotte | 16.4K | 256 | 2 |
| AS19008US | PSCI - Perry-Spencer Communications, Inc. | 16.4K | 65.5K | 4 |
| AS2901US | OGT-AS - Oso Grande Technologies, Inc. | 16.4K | 65.5K | 19 |
| AS40918US | DIODE-DILLER - Diode Cable Company | 16.4K | — | 33 |
| AS4911US | CENTURYLINK-LEGACY-QWEST-SPA-MARION - CenturyLink Communications, LLC | 16.4K | — | 1 |
| AS22054US | HOOD-CANAL - Hood Canal Communications | 16.4K | — | 6 |
| AS394289US | HOPE-COLLEGE - Hope College | 16.4K | — | 1 |
| AS399702US | TFN - Trace Fiber Networks, LLC. | 16.4K | — | 3 |
| AS4991US | COGENT-4991-4994 - Cogent Communications, LLC | 16.4K | — | 1 |
| AS30075US | LWSD414 - Lake Washington School District #414 | 16.4K | — | 1 |
| AS54813US | GREYSTONE-POWER - GREYSTONE POWER CORPORATION, AN ELECTRIC MEMBERSHIP CORPORATION | 16.4K | — | 2 |
| AS395379US | SCIREMC - SCI REMC | 16.4K | 65.5K | 4 |
| AS5101US | LEECOUNTYSCHOOLS - The School District of Lee County | 16.4K | — | 1 |
| AS36050US | FLOKY - Fifth Third Bank | 16.4K | — | 34 |
| AS8034US | WORLDNET5-10 - AT&T WorldNet | 16.4K | — | 1 |
| AS33481US | BELWAVE-COMMUNICATIONS - BELWAVE COMMUNICATIONS, INC. | 16.4K | — | 6 |
| AS26059US | PGH-AS - City of Pittsburgh | 16.4K | — | 1 |
| AS13909US | TECHIEMEDIA - Techie Hosting, Inc. | 16.4K | — | 5 |
| AS14001US | MICROADVANTAGE-INC - Vision Net Ltd | 16.4K | — | 1 |
| AS22948US | WVUSD - Walnut Valley Unified School District | 16.4K | — | 2 |
| AS395323US | SMC - County of San Mateo | 16.4K | — | 3 |
| AS1648US | JEFFERSON-PARISH-SCHOOL-BOARD - Jefferson Parish School Board | 16.4K | — | 17 |
| AS13857US | ONLINEMAC - Online Northwest | 16.4K | 65.5K | 10 |
| AS32707US | UHHS - University Hospitals Health System | 16.4K | — | 3 |
| AS14628US | SMUD-ELECTRIC - Sacramento Municipal Utility District | 16.4K | — | 25 |
| AS30497US | GTBAS - Global Telecom Brokers | 16.4K | — | 64 |
| AS23155US | HTC-NET - HARRISONVILLE TELEPHONE | 16.4K | — | 4 |
| AS26638US | MPLS-PUBLIC-SCHOOLS - Minneapolis Public Schools | 16.4K | — | 4 |
| AS23241US | USA-ICS - Nu Skin International, Inc. | 16.4K | — | 1 |
| AS393273US | ESC17-AS - Education Service Center, Region 17 | 16.4K | — | 1 |
| AS16426US | CITYOFCOLUMBUSOHIO - City of Columbus | 16.4K | — | 3 |
| AS14750US | SIERRA-TEL-INTERNET - Sierra Tel Internet | 16.4K | — | 3 |
| AS6253US | PRUASN - The Prudential Insurance Company of America | 16.4K | — | 22 |
| AS26873US | QCOL-AS - QCOL INC | 16.4K | 65.5K | 18 |
| AS31875US | JACKSON-CO-REMC - Jackson County Rural Electric Membership Corporation | 16.4K | 65.5K | 8 |
| AS63092US | ALEA - Alabama Law Enforcement Agency | 16.4K | — | 1 |
| AS6479US | MCHENRY - McHenryCom Company | 16.4K | 65.5K | 2 |