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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,173 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,242 |
| 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 |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,668 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,949 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,365 |
| 512 |
| 2 |
| 4 |
| AS7133US | NYPP-AS - New York Independent System Operator, Inc. | 512 | 1 | 3 |
| AS400653US | UPENN-WHARTON-SF - University of Pennsylvania | 512 | 1 | 2 |
| AS23526US | HALFMOONINN-GUEST-INTERNET - Humphreys Half Moon Inn & Suites | 512 | — | 1 |
| AS36519US | CISCO-TTNA - CISCO SYSTEMS, INC. | 512 | 1 | 2 |
| AS33461US | COMMUNITY-FOUNDATION-OF-NORTHWEST-INDIANA - COMMUNITY FOUNDATION OF NW INDIANA | 512 | — | 2 |
| AS46177US | WHITE-SKY-HOSTING - White Sky Hosting | 512 | 256 | 3 |
| AS22582US | LUMINEX - Luminex Corporation | 512 | — | 2 |
| AS19102US | PCI-TW - Patterson Companies, Inc. | 512 | — | 2 |
| AS17009US | SHOPTIKAL - Shopko Optical | 512 | — | 2 |
| AS46207US | STATE-OF-LOUISIANA-JUDICIAL-BRANCH - State of Louisiana Supreme Court - JA/CMIS | 512 | — | 1 |
| AS22276US | BANKUNITED - BankUnited NA | 512 | — | 2 |
| AS63151US | CPSL-ASN - The Children's Place | 512 | — | 2 |
| AS397116US | WMLPNET-AS-01 - Wellesley Municipal Light Plant | 512 | — | 1 |
| AS62907US | ZSCALER-CORP - ZSCALER, INC. | 512 | 259 | 6 |
| AS402511US | XPEER - XPEERS | 512 | — | 2 |
| AS22151US | BREAN-CAPITAL - Brean Murray & Co., Inc. | 512 | — | 2 |
| AS27001US | DAYSINNHOTELCIRCLE-GUEST-INTERNET - Days Inn Hotel Circle Sea World | 512 | — | 1 |
| AS396077US | UDR-US - UDR | 512 | — | 2 |
| AS6508US | VANTIVA - Vantiva USA Shared Services Inc. | 512 | — | 2 |
| AS22064US | AS22064-FXALL - Refinitiv US LLC | 512 | — | 2 |
| AS20373US | MARLEYINDEX-US - Marley Index, LLC | 512 | 3 | 5 |
| AS398786US | GO-DADDY-COM-LLC - GoDaddy.com, LLC | 512 | — | 2 |
| AS40711US | INTERACTIVE-CHIC - Interactive Brokers LLC | 512 | — | 2 |
| AS400236US | EACS-5 - East Allen County Schools | 512 | — | 2 |
| AS15276US | ZENDA-ASN - Zenda Telephone | 512 | — | 1 |
| AS14207US | CSG-OD2 - CSG Systems Inc. | 512 | — | 2 |
| AS54496US | JFBC-AS - Johnson Ferry Baptist Church, Inc. | 512 | 2 | 4 |
| AS54636US | AS-DBIO - Rackspace Hosting | 512 | — | 1 |
| AS396893US | WWMS - mitelefono.com | 512 | 65.5K | 4 |
| AS396321US | FANATICS - Fanatics, INC | 512 | — | 2 |
| AS46362US | CSIU-AS-NUM - Central Susquehanna Intermediate Unit | 512 | — | 2 |
| AS14100US | GARBERMAN01 - GARBER MANAGEMENT GROUP, INC. | 512 | — | 2 |
| AS1438US | PIONEER-STATE-MUTUAL-INSURANCE - PIONEER STATE MUTUAL INSURANCE CO. | 512 | — | 2 |
| AS394064US | AECI - Associated Electric Cooperative, Inc. | 512 | — | 2 |
| AS25735US | SLOTH-NET - Sloth Networks | 512 | 256 | 3 |
| AS35864US | APUS-5 - American Public University System | 512 | — | 2 |
| AS393448US | LIBERALLY-SINGAPORE - Liberally Network, LLC | 512 | 3 | 5 |
| AS19840US | OAKTREECAP - Oaktree Capital Management, LP | 512 | — | 2 |
| AS35974US | QTS-EEM - Quality Technology Services, LLC | 512 | — | 2 |
| AS36013US | MRESNET - Missouri River Energy Services | 512 | — | 2 |
| AS400013US | WAUPACA-FOUNDRY-INC - Waupaca Foundry, Inc. | 512 | 5 | 7 |
| AS397080US | MEDPOINT - MedPOINT Management | 512 | — | 2 |
| AS32419US | BALDWIN-LYONS - Protective Insurance Corporation | 512 | — | 2 |
| AS21594US | IBSA - Interstate Battery System of America Inc. | 512 | — | 1 |
| AS395824US | BEPCOLP - Bepco, L.P. | 512 | — | 2 |
| AS31800US | DALNET - DALnet | 512 | — | 2 |