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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 | 24,346 |
| 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 | 4,357 |
| 512 |
| — |
| 2 |
| AS14679US | CURBASN - Curb Mobility, LLC | 512 | — | 2 |
| AS400705US | JMRH-NET - Highland Networks, LLC | 512 | — | 1 |
| AS399568US | OFF-GRID-COMMUNICATIONS-LLC - Off-Grid Communications LLC | 512 | 4.1K | 3 |
| AS31894US | STARCOMWI - Star Communications LLC | 512 | — | 2 |
| AS397555US | TGNA-KWES - TEGNA Inc. | 512 | — | 2 |
| AS398880US | INVESTCLOUD - InvestCloud, Inc. | 512 | — | 2 |
| AS400592US | GRID-COMMUNICATIONS - Grid Communications, Inc. | 512 | — | 2 |
| AS55084US | DRMC-AS-1 - DuBois Regional Medical Center | 512 | — | 1 |
| AS21822US | JDBS - JD Byrider Systems Inc | 512 | — | 2 |
| AS393878US | EPIC-HOSTING-2 - Epic Hosting, LLC | 512 | — | 1 |
| AS22444US | USCOLD - United States Cold Storage Inc. | 512 | — | 2 |
| AS54700US | LEARN-INTERNAL - LEARN | 512 | — | 2 |
| AS397445US | 1314-DOUGLAS-01 - NATIONAL INDEMNITY COMPANY | 512 | — | 1 |
| AS397037US | CITY-OF-AMARILLO - City of Amarillo | 512 | — | 2 |
| AS16394US | KILLEEN-INDEPENDENT-SCHOOL-DISTRICT - Killeen ISD | 512 | — | 2 |
| AS53333US | ADISTEC-MIA-TMXO - Adistec Corp | 512 | — | 2 |
| AS396135US | AS-WOODMENLIFE-1 - Woodmen of the World Life Insurance Society | 512 | — | 2 |
| AS17338US | UNITAS-AOS - Unitas Global | 512 | — | 2 |
| AS22066US | CITY-OF-EAU-CLAIRE - City of Eau Claire | 512 | — | 1 |
| AS33159US | NSPNET1 - Nature's Sunshine Products, Inc. | 512 | — | 1 |
| AS25924US | GCM - Graham Capital Management, L.P. | 512 | — | 2 |
| AS26454US | HENRYSCHEIN - Henry Schein Inc | 512 | — | 2 |
| AS19449US | CONCURRENT - Concurrent Technologies Corp. | 512 | — | 2 |
| AS53381US | WAGWEB - Wagner-Weber Associates, Inc. | 512 | — | 2 |
| AS54459US | TGS-1 - TGS Management Company, LLC | 512 | — | 2 |
| AS406US | AFCONC-BLOCK1-AS - Air Force Systems Networking | 512 | — | 2 |
| AS11657US | LEGG-MASON-CORP-NET - Legg Mason & Co., LLC | 512 | — | 2 |
| AS33347US | NAVICENT - NAVICENT HEALTH | 512 | — | 2 |
| AS395918US | SIL-MAIN-AS - Sandestin Investments LLC | 512 | — | 2 |
| AS401729US | CS-ASN1 - CrossSignal, LLC | 512 | — | 2 |
| AS30250US | AS-ALLENISD-610 - Allen Independent School District | 512 | — | 2 |
| AS397868US | WHITEHAT-US-PROD-2 - Synopsys Inc. | 512 | — | 2 |
| AS396224US | NSF-INTERNATIONAL - NSF International | 512 | — | 2 |
| AS11958US | USABLE - USAble Life | 512 | — | 2 |
| AS40096US | HPS-51-ASN - High Point Solutions, Inc. | 512 | — | 1 |
| AS12113US | DAWN-FOOD-PRODUCTS - Dawn Food Products, Inc. | 512 | — | 2 |
| AS55078US | DIVING-BELL - DIVING BELL DEV LLC | 512 | 4.1K | 3 |
| AS36437US | SCC-44 - County of Santa Cruz | 512 | — | 2 |
| AS395072US | ODBM-3000 - Our Daily Bread Ministries | 512 | — | 2 |
| AS46402US | CO3-METHOD-01 - Company 3 | 512 | — | 2 |
| AS62557US | AUSTALUSA - Austal USA LLC | 512 | — | 2 |
| AS393813US | QUANTUM-HEALTH - Quantum Health Inc | 512 | — | 2 |
| AS53262US | MSC-AS - Mercy Medical Center | 512 | — | 2 |
| AS55182US | TCB-NA - Texas Capital Bank, N.A. | 512 | — | 2 |
| AS19452US | OAKTREECAP-COM - Oaktree Capital Management, LP | 512 | — | 2 |
| AS60154US | connectria-asn-1 Connectria, LLC | 512 | 524.3K | 3 |