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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,525 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,309 |
| 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.
32,245 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,000 |
| AS701US | UUNET - Verizon Business | 43.6M | 991 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 1K |
| — |
| 4 |
| AS7291US | SBIS-BLK - AT&T Enterprises, LLC | 1K | — | 4 |
| AS394377US | COUNTY-OF-TULARE - County of Tulare | 1K | — | 3 |
| AS393630US | AVANTGUARD - Avantguard Monitoring Centers | 1K | — | 4 |
| AS14005US | DATATECHHOSTING - Data-Tech | 1K | — | 1 |
| AS19834US | CNVR-ORD - Conversant, LLC | 1K | 52 | 7 |
| AS401085US | LCRA-ASN2 - Lower Colorado River Authority | 1K | 256 | 4 |
| AS395047US | ARTIX-NET - Artix Networks LLC | 1K | 272 | 6 |
| AS400790US | CHIA - Chia Network Inc. | 1K | 4 | 8 |
| AS393415US | LITTNET - LITTLER MENDELSON, P.C. | 1K | — | 4 |
| AS14532US | CBOSS - CBOSS INC | 1K | 6 | 10 |
| AS14591US | STANDARD-PROCESS-INC-1 - Standard Process Inc. | 1K | — | 3 |
| AS16610US | BLUEBIRD-WIRELESS - Bluebird Wireless Broadband Services, L.L.C. | 1K | — | 4 |
| AS4912US | CENTIER - CENTIER BANK | 1K | — | 1 |
| AS26670US | MCISD-AS - Mission CISD | 1K | — | 1 |
| AS16619US | GTRI-RSRCH - Georgia Institute of Technology | 1K | — | 1 |
| AS11733US | EJGALLO - E. & J. Gallo Winery Inc. | 1K | — | 1 |
| AS20177US | EMPORIA-STATE-UNIVERSITY - Emporia State University | 1K | — | 2 |
| AS63386US | THEGEO-NET - The Greater Eastern Oregon Network, LLC | 1K | 4.1K | 4 |
| AS22788US | KATYISD - Katy Independent School District | 1K | — | 3 |
| AS18783US | RDSEC-NET-01 - RD Sec LLC | 1K | 4.1K | 4 |
| AS25765US | CQGNET-NEWYORK - CQG, Inc. | 1K | — | 4 |
| AS14070US | SVH-TVH-AS1 - Valley Health System | 1K | — | 1 |
| AS53469US | KPBSD - Kenai Peninsula Borough School District | 1K | — | 1 |
| AS16991US | CBTS-AS-DC1 - Cincinnati Bell Technology Solutions | 1K | — | 1 |
| AS133144US | M8X8INC-AS-AP - 8x8, Inc. | 1K | — | 4 |
| AS395857US | MIHS - Maricopa Integrated Health System | 1K | — | 3 |
| AS11980US | BDO-USA-LLP - BDO USA | 1K | — | 2 |
| AS10554US | WESTERNU-POMONA - WESTERN UNIVERSITY OF HEALTH SCIENCES | 1K | — | 4 |
| AS400400US | CLAIR - Clair Global | 1K | 48 | 7 |
| AS394922US | CGIFEDERAL - CGI Federal | 1K | — | 4 |
| AS18923US | TWRS-FTW - Towerstream I, Inc. | 1K | 1 | 2 |
| AS63362US | SMULE - Smule Inc. | 1K | — | 3 |
| AS19316US | QUADRANGLE - Quadrangle Development Corporation | 1K | — | 4 |
| AS22401US | FC-POTAWATOMI-MKE-BINGO-CASINO - Potawatomi Bingo Casino | 1K | — | 3 |
| AS46490US | DMEHOAS - DME Holdings, LLC | 1K | — | 4 |
| AS399656US | ETHX-BIZ - ETHX | 1K | — | 1 |
| AS55291US | HARRIS-COUNTY-AS - Harris County | 1K | — | 1 |
| AS22746US | LCTS - Lincoln County Telephone System, Inc. | 1K | 65.5K | 2 |
| AS16482US | PEAK10-LOU - Flexential Corp. | 1K | — | 2 |
| AS30118US | MAS-CTDC - Mizuho Americas Services LLC | 1K | — | 4 |
| AS5978US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | 1K | — | 3 |
| AS30523US | BOK-FINANCIAL-CORPORATION - BOK Financial Corporation | 1K | — | 4 |
| AS19647US | HPINC - HP Inc. | 1K | — | 2 |
| AS40553US | CUYAHOGA-COUNTY - Cuyahoga County Information Services center | 1K | — | 2 |
| AS27632US | TRACTORSUPPLY - Tractor Supply Company | 1K | 65.5K | 7 |
| AS6103US | MTW-ASN - The Manitowoc Company Inc | 1K | — | 4 |