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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. | 218M | 24,540 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,305 |
| 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.
32,187 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,362 |
| UTURN-ASN - UTurn |
| 256 |
| 256 |
| 2 |
| AS22568US | AS-SKYFI - Sky Fi | 256 | — | 1 |
| AS396069US | NBC-64-ASN1 - Nazarene Bible College | 256 | 1 | 2 |
| AS2031US | AWWASN - American Water Works Company Inc. | 256 | — | 1 |
| AS402077US | MSE-01 - Monumental Sports & Entertainment | 256 | — | 1 |
| AS1084US | IMIL-4-NETWORK - Intermountain Medical Imaging | 256 | — | 1 |
| AS397001US | CSISD - College Station Independent School District | 256 | — | 1 |
| AS27019US | BALLNET - Ball Horticultural Company | 256 | — | 1 |
| AS16914US | MBHARCH - MBH ARCHITECTS | 256 | — | 1 |
| AS399796US | BERNINA - Bernina of America, LLC | 256 | — | 1 |
| AS395384US | MUFSD-1 - Massapequa Union Free School District | 256 | — | 1 |
| AS395625US | FISC-INT-ASN - Financial Institution Service Corp. | 256 | — | 1 |
| AS394693US | PLCU-NET - Point Loma Credit Union | 256 | — | 1 |
| AS15253US | SDSHERIFF-2 - SDSO | 256 | — | 1 |
| AS63244US | ASG - American Seafoods Company LLC | 256 | — | 1 |
| AS395744US | COSTCO-TRAVEL - Costco Travel | 256 | — | 1 |
| AS17218US | LC-647 - Linfield University | 256 | 1 | 2 |
| AS394193US | CMNJ-ASN - County of Morris OIT | 256 | — | 1 |
| AS27439US | MULTIPLEX-NET - MultiPlex Networks LLC | 256 | 4.1K | 2 |
| AS54440US | PCL-ASN1 - Pamir Consulting LLC | 256 | — | 1 |
| AS16697US | CITY-OF-COLUMBIA-MO - City of Columbia, MO | 256 | — | 1 |
| AS399802US | FIBERSMITH-CBLOCK-170-31-11 - The Fibersmith Company | 256 | — | 1 |
| AS40039US | ALPHA-N-OMEGA-AOS-40 - ALPHA AND OMEGA SEMICONDUCTOR INCORPORATED | 256 | — | 1 |
| AS27347US | DATAPRO-NETWORKS - Datapro Telecom Solutions LLC | 256 | — | 1 |
| AS396980US | API-EGVDC-01 - Absolute Performance, Inc. | 256 | — | 1 |
| AS53517US | ECOMATLANTIC - ECOM Atlantic, Inc. | 256 | — | 1 |
| AS401502US | AS-FALCON - Falcon (America) LLC | 256 | — | 1 |
| AS11174US | AS-ATHEN-1 - Athenahealth | 256 | — | 1 |
| AS36535US | HUDSON-RIVER-TRADING-LLC-36535 - Hudson River Trading LLC | 256 | — | 1 |
| AS401136US | LCI-HQ - LC Industries Inc. | 256 | — | 1 |
| AS399820US | ATOMIC-NETWORKS-1 - SPARKED HOST LLC | 256 | 1 | 2 |
| AS36740US | VCCC-2 - Volusia County Clerk of the Courts | 256 | — | 1 |
| AS393413US | HILLSOUTH-DATACENTER01 - Scient Partners, LLC | 256 | — | 1 |
| AS395488US | ABSOLUTE-TECHNOLOGY-CONSULTING - Absolute Computing Solutions | 256 | — | 1 |
| AS394250US | PDS-DC1 - Pacific Dental Services | 256 | — | 1 |
| AS397176US | NBMC - New Bridge Medical Center | 256 | — | 1 |
| AS62797US | CASTO-250CIVICCENTER - CASTO Management Services inc | 256 | — | 1 |
| AS55065US | FORTHEALTHCARE-FTAWI - Fort HealthCare Inc | 256 | — | 1 |
| AS19347US | JACKSON-1 - JACKSON NATIONAL LIFE INSURANCE CO. | 256 | — | 1 |
| AS11460US | ZALECORP - Zale Delaware, Inc. | 256 | — | 1 |
| AS394756US | CONVO-DAL - Convo | 256 | 1 | 2 |
| AS397346US | SBC-GTY-01 - SBFiber | 256 | — | 1 |
| AS397620US | CITYMENLOPARK - City of Menlo Park | 256 | — | 1 |
| AS32140US | JEWELRY-TELEVISION - Jewelry Television | 256 | — | 1 |
| AS399192US | BECI-01 - Beauregard Electric Cooperative, Inc | 256 | — | 1 |
| AS30205US | SECURESOCKET - SecureSocket, LLC | 256 | — | 1 |
| AS54348US | CAROMONT-HEALTH - CaroMont Health Inc. | 256 | — | 1 |