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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) | 227.7M | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 210.9M | 21,017 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,219 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 228 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 368 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 48M | 3,585 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,932 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,534 |
| 5.4K |
| 16.4K |
| 23 |
| AS397270US | NETINF-TRANSIT-AS - NetInformatik Inc. | 5.4K | 1.5K | 18 |
| AS62802US | MST-JCMAIN - Macy's Systems and Technology, Inc. | 5.4K | — | 15 |
| AS20097US | CITY-OF-TULSA - City of Tulsa | 5.4K | — | 3 |
| AS396185US | PEMTEL - GILES-CRAIG COMMUNICATIONS INC. | 5.4K | — | 13 |
| AS62763US | ABBVIE - AbbVie, Inc. | 5.4K | — | 14 |
| AS53833US | ICISD - Ionia County ISD | 5.4K | — | 10 |
| AS393938US | SSL-AS - SPACE SYSTEMS/LORAL, INC. | 5.4K | — | 6 |
| AS4583US | THOMSON-REUTERS - West Publishing Corporation | 5.4K | — | 7 |
| AS54711US | HMS - Healthcare Management Systems, Inc. | 5.4K | — | 4 |
| AS394326US | GOLDEN-VALLEY-CABLE - Route 66 Broadband LLC | 5.4K | — | 13 |
| AS12154US | INFOUSA - DATA AXLE, INC | 5.4K | — | 13 |
| AS394611US | SOUTHCENTRALPOWER - South Central Power Company | 5.4K | 65.9K | 7 |
| AS30513US | DYNAMIC-INTERNET - DYNAMIC INTERNET | 5.4K | 65.5K | 9 |
| AS25687US | KVH02842 - KVH INDUSTRIES,INC. | 5.4K | 1 | 12 |
| AS32255US | PPLNET-AS - PPL Corporation | 5.4K | — | 14 |
| AS4977US | VENCORESS - Vencore Services and Solutions, Inc. | 5.4K | — | 7 |
| AS46784US | DPW - Davis Polk & Wardwell, LLP | 5.4K | — | 21 |
| AS254US | OPENTEXT - Attachmate Corp. | 5.4K | 1 | 10 |
| AS40911US | L2NC-AS - L2Networks Corp. | 5.4K | — | 6 |
| AS40311US | VIASAT-3 - ViaSat,Inc. | 5.4K | — | 11 |
| AS16654US | VERO-NETWORKS-AS16654 - Vero Broadband | 5.4K | — | 7 |
| AS54142US | WHITE-CLOUD-COMMUNICATIONS - White Cloud Communications US, LLC | 5.4K | — | 6 |
| AS62811US | MTG - Mercury Technology Group, Inc. | 5.4K | — | 8 |
| AS11589US | STOWE-COMMUNICATIONS - Stowe Communications LLC | 5.4K | — | 7 |
| AS31872US | VANTIVE-HEALTHCARE - Vantive Health | 5.4K | — | 21 |
| AS33US | HPINC - HP Inc. | 5.4K | — | 7 |
| AS400190US | FREEPORT-MCMORAN-INC - Freeport-McMoRan Inc. | 5.4K | 4 | 10 |
| AS33321US | ZAYO-33321 - Zayo Bandwidth | 5.4K | — | 6 |
| AS29949US | BFS-49-29949 - Broadridge Financial Solutions, Inc. | 5.4K | — | 6 |
| AS40850US | AS-UPIX-40850 - UPIX NETWORKS INTERNATIONAL LLC | 5.4K | 77.8K | 14 |
| AS395344US | IVANTI-BD - Ivanti, Inc. | 5.4K | — | 12 |
| AS14689US | ENFUSION-ASN - Enfusion LTD. LLC | 5.4K | — | 11 |
| AS205993US | CAFETECNOLOGIA Cafe Tecnologia LLC | 5.4K | — | 12 |
| AS20264US | WEBAIR-INTERNET-2 - Webair Internet Development Company Inc. | 5.4K | 65.5K | 20 |
| AS4557US | SOUTHEAST-TEXAS-GIGAPOP - Rice University | 5.4K | 259 | 10 |
| AS26243US | INTELSAT-S - Intelsat | 5.4K | — | 13 |
| AS26057US | MEDIAOCEAN - Mediaocean LLC | 5.4K | 10 | 26 |
| AS21504US | BESSEMER-GROUP-INCORPORATED - The Bessemer Group, Inc. | 5.4K | — | 20 |
| AS25845US | VIRGINIA-MASON - Virginia Mason Medical Center | 5.4K | — | 3 |
| AS393657US | COLORADOMESAUNIVERSITY - Colorado Mesa University | 5.4K | 16 | 19 |
| AS1416US | CHICAGO-PUBLIC-SCHOOLS - Chicago Public Schools | 5.4K | — | 10 |
| AS32287US | SOLANA-CITIPLEX - Citigroup Inc. | 5.4K | — | 21 |
| AS30305US | LPS-1 - Black Knight IP Holding Company, LLC | 5.4K | — | 19 |
| AS394073US | BUNGIE-INC - Bungie Inc. | 5.4K | — | 14 |
| AS25868US | ACE-002 - Ace Data Centers II, L.L.C. | 5.4K | 2 | 5 |
| AS30548US | ARUBA - ARUBA NETWORKS, INC. | 5.4K | 90 | 13 |