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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 |
| AS393969US | KALEIDESCAPE-INC - Kaleidescape, Inc. | 1K | — | 4 |
| AS395931US | ACECLOUD-01 - Real Time Cloud Services LLC | 1K | 4.1K | 2 |
| AS14079US | RTB-ASN-01 - Radio Toolbox, LLC | 1K | 4.1K | 2 |
| AS396354US | SPECTRUMVOIP-ISP-DAL - SpectrumVoIP Inc | 1K | 65.5K | 4 |
| AS29207US | SHIRE-UK-AS Takeda Pharmaceuticals U.S.A., Inc. | 1K | — | 4 |
| AS14195US | CONTEGO-AS - Contego Solutions LLC | 1K | — | 3 |
| AS402148US | TEYVAT-CONTINENT - Teyvat Continent LLC | 1K | — | 1 |
| AS54776US | WEST-ESSEX - West Essex Regional School District | 1K | — | 4 |
| AS398450US | CUSTOMCABLE-FISHERISLAND-2020 - Custom Cable LLLP | 1K | — | 1 |
| AS1089US | ZELLATECH - Zella Technologies, LLC | 1K | 4.1K | 2 |
| AS400525US | AM-PRODNET-01 - Audible Magic | 1K | — | 3 |
| AS23413US | VM-AW-US - Omnissa, LLC | 1K | — | 4 |
| AS36564US | SIEMENS-DISW-WIV-B-TAH - Siemens Industry Software Inc. | 1K | 1 | 2 |
| AS33601US | OUTREACHBROADBAND - Outreach Broadband, Inc. | 1K | — | 3 |
| AS21835US | SCARSDALE-SECURITY-SYSTEMS - Scarsdale Security Systems, Inc. | 1K | 65.5K | 5 |
| AS394609US | INCOMM-NET1 - InComm | 1K | — | 4 |
| AS11501US | VISTAASN - Vista Radiology, P.C. | 1K | — | 3 |
| AS12233US | CACHE-POWERED-BY-NINJA-IX - Ninja-IX Corporation | 1K | 1 | 5 |
| AS3629US | NYSERNET-BLK - NYSERNet | 1K | 1 | 2 |
| AS206819US | markahost-llc Markahost LLC | 1K | — | 1 |
| AS393492US | DIGALERT - Underground Service Alert of Southern California | 1K | — | 3 |
| AS36432US | PRIMARYDATACENTER - Mirror Plus Technologies Inc. | 1K | — | 4 |
| AS18976US | UNICOM-SYSTEMS-INC - UNICOM Systems Inc. | 1K | — | 4 |
| AS1702US | CCHICAGO-STATE-UNIVERSITY - CHICAGO STATE UNIVERSITY | 1K | — | 1 |
| AS22885US | ASI - ADVERTISING SPECIALTY INSTITUTE, INC. | 1K | — | 3 |
| AS1041US | KMB3 - Kimberly-Clark Corporation | 1K | — | 3 |
| AS32258US | VELOCITY-FUSION - Velocity Fusion | 1K | — | 4 |
| AS40454US | MMUIA-NET-15 - Manning Municipal Utilities | 1K | — | 1 |
| AS23281US | CITY-OF-SACRAMENTO - City of Sacramento | 1K | — | 4 |
| AS21849US | CARECENTRIX - CareCentrix, Inc. | 1K | — | 3 |
| AS398557US | SDS-WIRELESS-INC - SDS Wireless, Inc. | 1K | — | 1 |
| AS396056US | EAGLE-TELEPHONE-ASN - EAGLE TELEPHONE SYSTEM INC | 1K | 4.1K | 2 |
| AS26084US | PCI - PCI | 1K | — | 4 |
| AS23318US | ABBVIE-1 - AbbVie, Inc. | 1K | — | 1 |
| AS219217US | Zetly Netly LLC | 1K | — | 4 |
| AS29841US | JACKSON - JACKSON NATIONAL LIFE INSURANCE CO. | 1K | — | 4 |
| AS53647US | CARPENTER-TECH - Carpenter Technology Corporation | 1K | — | 4 |
| AS22886US | ICI-ATL - Incomm | 1K | — | 4 |
| AS33062US | ALEXLEE-INC - ALEX LEE INC | 1K | — | 2 |
| AS12134US | MTB - Manufacturers and Traders Trust Company | 1K | — | 4 |
| AS36468US | INTELLIGENT-TECHNICAL-SOLUTIONS - Intelligent Technical Solutions | 1K | — | 1 |
| AS54224US | ALPINEBK-ALPINE-BAN - Alpine Banks of Colorado | 1K | — | 3 |
| AS12158US | ILLUMINA - ILLUMINA, INC. | 1K | — | 3 |
| AS19539US | IPONLY-US-AS - IP-Only Inc | 1K | 65.5K | 2 |
| AS22445US | MHK - Mohawk Industries, Inc. | 1K | — | 4 |
| AS46090US | AMX - LATAM Telecommunications, L.L.C. | 1K | — | 4 |