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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 | 24,632 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,307 |
| 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.
32,210 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| 256 |
| 65.5K |
| 2 |
| AS398815US | CITY-OF-ALEXANDRIA - City of Alexandria | 256 | — | 1 |
| AS14942US | AS14942 - Regional One Health | 256 | — | 1 |
| AS19944US | GRANITEIX-SERVICES - GraniteIX LLC | 256 | 256 | 2 |
| AS40323US | VAFB - Virginia Farm Bureau Mutual Insurance Company | 256 | — | 1 |
| AS30629US | LCLARK - Lewis & Clark College | 256 | — | 1 |
| AS32853US | DMTN - Denso Manufacturing, Tennessee, Inc. | 256 | — | 1 |
| AS62653US | HARRG-CHESHIRE - Housing Authority Risk Retention Group, Inc. | 256 | — | 1 |
| AS393992US | TOWNOFBROOKHAVEN - Town of Brookhaven | 256 | — | 1 |
| AS54692US | GS-ASN-01 - GuideStone Financial Resources of the Southern Baptist Convention | 256 | — | 1 |
| AS14290US | ASD-ANSWERING-SERVICE-FOR-DIRECTORS - Answering Service for Directors | 256 | — | 1 |
| AS40868US | FCEC-ASN - Fannin County Electric Cooperative, Inc. | 256 | — | 1 |
| AS53614US | 53614 - Bob's Discount Furniture, LLC | 256 | — | 1 |
| AS33193US | HEART-OF-THE-ROCKIES - Heart of the Rockies Regional Medical Center | 256 | — | 1 |
| AS393983US | WWWROCKFORD - Wolverine Worldwide | 256 | 256 | 2 |
| AS16508US | DESMOND - AEG | 256 | — | 1 |
| AS46480US | PEKIN-INSURANCE-HOME-OFFICE - Pekin Insurance | 256 | — | 1 |
| AS20277US | EOCNET - EOC Networks LLC | 256 | 256 | 2 |
| AS26982US | SNOWMOON - Snowmoon Technologies | 256 | — | 1 |
| AS199897US | Vexta-Data-Solutions Vexta Data Solutions LLC | 256 | — | 1 |
| AS397791US | PROASSURANCE - ProAssurance Corporation | 256 | — | 1 |
| AS398818US | NORTH-LAUDERDALE-WIRELESS-INTERNET - North Lauderdale Water Association, Inc. | 256 | — | 1 |
| AS26711US | ICANN-MDR - ICANN | 256 | 1 | 2 |
| AS16505US | HTF-FREDERICK - HTF | 256 | — | 1 |
| AS53882US | COMMUNITECT - Communitect, Inc | 256 | — | 1 |
| AS399551US | MILLENNIUM-SYSTEMS-INC - Millennium Systems, Inc. | 256 | — | 1 |
| AS399816US | LAER-AS-ATL1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS401623US | OMNISSA-ATL - Omnissa, LLC | 256 | 1 | 2 |
| AS22769US | VSCU-1 - Valley Strong Credit Union | 256 | — | 1 |
| AS395302US | ADAMS-COUNTY-COLORADO - Adams County, Colorado | 256 | — | 1 |
| AS63141US | XACTLY-CORP - Xactly Corporation | 256 | — | 1 |
| AS7213US | MASONCOMPANIESINC - Mason Companies, Inc. | 256 | — | 1 |
| AS46245US | NIFCO-ASN-01 - NIFCO America | 256 | — | 1 |
| AS22433US | HRMC - Human Resource Management Center, Inc. | 256 | — | 1 |
| AS22695US | PLAYGROUND - Playground Global, LLC | 256 | 1 | 2 |
| AS33711US | SADDLE-NETWORKS - Saddle Networks | 256 | 768 | 3 |
| AS399634US | CC-VISA-01 - Cardinal Commerce Corporation | 256 | — | 1 |
| AS55287US | OKLO - Oklo Inc. | 256 | — | 1 |
| AS18720US | PACSUN - Pacific Sunwear of California | 256 | — | 1 |
| AS394108US | GMS-AS394108 - Gypsum Management and Supply, Inc. | 256 | — | 1 |
| AS31847US | FAS-181 - Facility Automation Solutions, Inc. | 256 | — | 1 |
| AS401876US | WBC-ASN-02 - Weigel Broadcasting Co | 256 | — | 1 |
| AS401045US | KNOXCOGOVT-01 - Knox County Government | 256 | — | 1 |
| AS401200US | SQUARESPACE-CORP-01 - Squarespace, Inc. | 256 | — | 1 |
| AS402546US | RACKBYTE - RackByte | 256 | 65.5K | 3 |
| AS399027US | AHH-MAIN-01 - ARKANSAS HEART HOSPITAL ENCORE | 256 | — | 1 |
| AS395671US | TENABLE-NETWORK-SECURITY-INC - Tenable, Inc. | 256 | — | 1 |