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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 | 24,358 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,342 |
| 768 |
| — |
| 3 |
| AS31824US | HF-MANAGEMENT-SERVICES-LLC - HF Management Services, LLC | 768 | — | 3 |
| AS40827US | HUDSON-RIVER-TRADING-LLC - Hudson River Trading LLC | 768 | — | 3 |
| AS16711US | EHI-NA-AS-2 - Enterprise Holdings, Inc. | 768 | 2 | 5 |
| AS36665US | NATIONAL-CINEMEDIA - National Cinemedia, LLC | 768 | — | 3 |
| AS30276US | GDCNET---GREEN-DOT-CORPORATION - Green Dot Corporation | 768 | — | 3 |
| AS23047US | MCKINSEY-US - Mckinsey & Company | 768 | — | 3 |
| AS18929US | AAMVA - THE AMERICAN ASSOCIATION OF MOTOR VEHICLE ADMINISTRATORS | 768 | — | 3 |
| AS401305US | NIL - NIL Investment Link LLC | 768 | — | 3 |
| AS40175US | HEALTHSOUTH - Encompass Health Corporation | 768 | — | 3 |
| AS62850US | PELSC-DC - OnTrack Systems LLC | 768 | 256 | 4 |
| AS16565US | FIRST-HAWAIIAN-BANK - First Hawaiian Bank | 768 | — | 3 |
| AS31776US | BUSINESS-WIRE-NY - Business Wire | 768 | — | 2 |
| AS53451US | NETX-INTERNET - NetX Internet, LLC. | 768 | 65.5K | 4 |
| AS62588US | ASGDC - Active Solutions Group | 768 | — | 3 |
| AS396497US | CENTRETECH-AS-1 - Centre Technologies, Inc. | 768 | — | 3 |
| AS397625US | TPC - Tessy Plastics Corp. | 768 | — | 2 |
| AS17244US | MCNEESE - McNeese State University | 768 | — | 3 |
| AS394344US | NETACTUATE - NetActuate, Inc | 768 | 4.1K | 4 |
| AS53951US | GLMX-AS - GLMX, LLC | 768 | — | 3 |
| AS30532US | 3310-617INTERNET - Healthcare Realty Trust, Inc. | 768 | — | 3 |
| AS11051US | CYBERVERSE - Evocative, Inc. | 768 | — | 3 |
| AS23249US | AVECTRA - Avectra | 768 | — | 2 |
| AS22785US | GLACIER-BANCORP-INC - GLACIER BANCORP INC | 768 | — | 3 |
| AS54305US | ALLACCESSTC - All Access Telecom, Inc. | 768 | — | 3 |
| AS46109US | ARDENT-NETWORKS - Ardent Wireless, LLC | 768 | 4 | 7 |
| AS27608US | RIPPECLOUD - Rippe & Kingston, LLC | 768 | — | 3 |
| AS54040US | NBCUNI - NBCUniversal | 768 | — | 2 |
| AS14020US | LONGWOOD-1 - Longwood Gardens Inc. | 768 | — | 3 |
| AS7988US | CENTURYLINK-SPA-SINGAPORE - CenturyLink Communications, LLC | 768 | — | 2 |
| AS400885US | OPTNET - Optimus Communications | 768 | — | 3 |
| AS22841US | NCCNORTHAMPTON - Northampton Community College | 768 | — | 3 |
| AS14541US | GE-AIRCRAFT-ENGINES - GE AIRCRAFT ENGINES | 768 | — | 3 |
| AS7285US | SAGENET - SageNet LLC | 768 | — | 3 |
| AS54481US | CHESCO204108252 - County of Chester | 768 | — | 3 |
| AS393895US | LOANDEPOT-COM - LOANDEPOT.COM, LLC | 768 | — | 2 |
| AS32086US | PSHP-AS - PACIFICSOURCE HEALTH PLANS | 768 | — | 3 |
| AS55088US | RWA-ASN - RWA Wealth Partners, LLC | 768 | — | 3 |
| AS211607US | RECORDEDFUTURE Securitytrails, LLC | 768 | 4.1K | 5 |
| AS32863US | TRINSICTECH - Trinsic Technologies, Inc. | 768 | — | 3 |
| AS40220US | MARIA - Virginia Polytechnic Institute and State Univ. | 768 | 69.8K | 7 |
| AS16830US | EIS-EQUINIX-AS - EIS Group, INC | 768 | — | 3 |
| AS7324US | IFAX-ASN-1 - iFAX Solutions, Inc. | 768 | 16 | 4 |
| AS393585US | HSI-WST-28500 - Hyland Software, Inc. | 768 | — | 3 |
| AS394672US | ALLEGIANTNETWORKS-01 - Allegiant Technology | 768 | — | 3 |
| AS22273US | GWCCNET-ASN - Great West Casualty Company | 768 | — | 3 |
| AS27560US | ULTCO - Universal Leaf Tobacco Company Inc. | 768 | — | 3 |