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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. | 211.2M | 21,171 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,241 |
| 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 | 3,667 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,951 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,368 |
| 512 |
| — |
| 2 |
| AS22694US | CNBC - NBCUniversal | 512 | — | 2 |
| AS397326US | SFN-ASN - South Front Networks | 512 | 256 | 3 |
| AS13554US | TPS-TX-AS - Tenaska Power Services, Co. | 512 | — | 2 |
| AS399330US | CASCADE-INET-01 - Cascade Corporation | 512 | — | 2 |
| AS22471US | MOTEMARINELAB - Mote Marine Laboratory | 512 | — | 1 |
| AS11553US | MANNAWEB - Mannatech INC. | 512 | — | 2 |
| AS40040US | LAITRAM-INTERNET - Laitram L.L.C. | 512 | — | 2 |
| AS400357US | SOUTHCOAST-HEALTH-01 - Southcoast Health System, Inc. | 512 | — | 2 |
| AS27634US | MICRODG-AS - Microdynamics Corporation | 512 | — | 2 |
| AS39978US | REED-SMITH-ASN - REED SMITH LLP | 512 | — | 2 |
| AS36298US | INFOCISION - InfoCision Management Corporation | 512 | — | 2 |
| AS40350US | KEYCOOP - Key Cooperative | 512 | — | 2 |
| AS398574US | COMMONWEALTH-CHARTER-ACADEMY - Commonwealth Charter Academy | 512 | — | 2 |
| AS398351US | MAYMOBILITY - May Mobility, Inc | 512 | 2 | 4 |
| AS400697US | OPTIMAS-SOLUTIONS - Optimas OE Solutions, LLC | 512 | — | 2 |
| AS396017US | COMCAST-MES - Comcast Cable Communications, LLC | 512 | — | 2 |
| AS40532US | BUS-DATA-INC - Business Data, Inc. | 512 | — | 2 |
| AS396395US | ALLIANTINSURANCE - Alliant Insurance Services, Inc. | 512 | — | 2 |
| AS394275US | PARALLELS - Parallels Inc | 512 | — | 1 |
| AS64213US | AS-ERCELITE - ERC Broadband | 512 | 1 | 3 |
| AS46501US | WATCHGUARD-TECHNOLOGIES-INC - WatchGuard Technologies, Inc. | 512 | 1 | 3 |
| AS13498US | TSYS-SDC-THS - Global Payments Inc. | 512 | — | 2 |
| AS32889US | SOUTHWESTERN-WIRELESS - Southwestern Wireless, Inc. | 512 | — | 2 |
| AS21876US | THE-SAVE-MART-COMPANIES - The Save Mart Companies | 512 | — | 2 |
| AS46084US | ASRCFH-NET - ASRC FEDERAL HOLDING COMPANY, LLC | 512 | — | 2 |
| AS4563US | BTMU-AMERICA - MUFG Bank Ltd. | 512 | — | 2 |
| AS30483US | TEXAS-GAS-TRANSMISSION - TEXAS GAS TRANSMISSION, LLC | 512 | — | 2 |
| AS402251US | BOLD-ROOSEV-HED - Apogee Telecom Inc. | 512 | — | 2 |
| AS13313US | BARNES-AND-NOBLE - Barnes & Noble Inc. | 512 | — | 2 |
| AS29769US | AWT-ASN-29769 - Allwire Technologies LLC | 512 | 4.1K | 3 |
| AS36578US | WISN-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS7034US | PHIREPHLY-DESIGN - PhirePhly Design | 512 | 2 | 4 |
| AS32639US | SOLARNETONE - SolarNetOne, Inc. | 512 | 4.1K | 4 |
| AS401462US | SUBARU-SIA - Subaru of Indiana Automotive, Inc. | 512 | — | 1 |
| AS17196US | COD-GE-IL - College of duPage | 512 | — | 1 |
| AS20417US | STABILISERVERS - StabiliServers | 512 | 2 | 4 |
| AS396014US | TSG - TSG Resources, Inc. | 512 | — | 2 |
| AS36807US | SAINTFRANCIS-TULSA - Saint Francis Health System | 512 | — | 1 |
| AS22266US | KNIGHT-INC - KNIGHT TRANSPORTATION | 512 | — | 2 |
| AS395332US | GINKOID - ginkoid LLC | 512 | — | 2 |
| AS33496US | ISC - ISC CONSTRUCTORS, LLC | 512 | 1 | 3 |
| AS25770US | SHRM - Society for Human Resource Management | 512 | — | 2 |
| AS46879US | NCTCOG-911-ESINET-AS - North Central Texas Council of Governments | 512 | — | 2 |
| AS36054US | GLG-AS---GERSON-LEHRMAN-GROUP - Gerson Lehrman Group, Inc. | 512 | — | 2 |
| AS53727US | AS-PENGUIN - Penguin Networks | 512 | 36 | 8 |
| AS40797US | EV-COG-01 - Easy Voice, LLC | 512 | — | 2 |