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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 | 24,632 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,307 |
| 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.
32,210 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 | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| 256 |
| — |
| 1 |
| AS11089US | ERGON-NETWORK - ERGON | 256 | — | 1 |
| AS21721US | BLT-US-01 - Blount International, Inc | 256 | — | 1 |
| AS400962US | FOURTEEN-FOODS-01 - Fourteen Foods, LLC | 256 | — | 1 |
| AS33145US | ASN-BETHANYBCS - Bethany Christian Services | 256 | — | 1 |
| AS14421US | THERAVANCE - Theravance Biopharma US, LLC | 256 | — | 1 |
| AS13465US | SAMHOUSTONEC - Sam Houston Electric Cooperative, Inc. | 256 | — | 1 |
| AS18684US | WCM-ASN - Westfield Capital Management Company, LLC | 256 | — | 1 |
| AS11217US | CLM-ASN - Carter Ledyard & Milburn LLP | 256 | — | 1 |
| AS394781US | RSD - Reading School District | 256 | 256 | 2 |
| AS26875US | HBT-AS-01 - Heartland Bank and Trust Company | 256 | — | 1 |
| AS401635US | WALSWORTH - EAU CLAIRE - WALSWORTH PUBLISHING COMPANY | 256 | — | 1 |
| AS396457US | VIRGINIA-WESLEYAN-UNIVERSITY - Virginia Wesleyan University | 256 | — | 1 |
| AS401069US | GLOVISAL-01 - Glovis Alabama | 256 | — | 1 |
| AS58342US | MISAKA-IT-AS Misaka Network, Inc. | 256 | — | 1 |
| AS14879US | PARIS-AS - PARIS ACCESSORIES INC. | 256 | — | 1 |
| AS22665US | UNGAGE - Ungage Capital LLC | 256 | 20 | 6 |
| AS30153US | BBRG-ASN - Bridon American Corporation | 256 | — | 1 |
| AS400679US | UBERDUCK - Uberduck, LLC | 256 | 4.1K | 2 |
| AS32198US | MFPS-POTATOROLLS-01 - Martin's Famous Pastry Shoppe, Inc. | 256 | — | 1 |
| AS401721US | EVOLUTIONFIBER-US-TX - Evolution Fiber LLC | 256 | 64 | 2 |
| AS40183US | BTL - Bell Techlogix | 256 | — | 1 |
| AS36780US | SECURE-GATEWAY-ALSCO - ALSCO | 256 | — | 1 |
| AS397571US | PLEXUSSYSTEMS-DV - ROCKWELL AUTOMATION Inc. | 256 | — | 1 |
| AS393569US | 9-11-MEMORIAL - 9/11 MEMORIAL | 256 | — | 1 |
| AS6129US | XAXIS-AS1 - mPlatform LLC | 256 | — | 1 |
| AS15314US | JENZABAR-ASN1 - jenzabar inc | 256 | — | 1 |
| AS26708US | CCS-AS - Center for Computing Sciences | 256 | — | 1 |
| AS40228US | LLL-NBRK - Levin & Levy, LLP | 256 | — | 1 |
| AS31948US | HQ - Santa Ana Star Casino Hotel | 256 | — | 1 |
| AS14531US | LM-ATL - Lockheed Martin Corporation | 256 | — | 1 |
| AS401257US | LP-SUBNET--69 - LIBOR | 256 | — | 1 |
| AS14269US | LIFELINE - Lifeline Computer Solutions, Inc. | 256 | — | 1 |
| AS397508US | NJTPA - North Jersey Transportation Planning Authority, Inc. | 256 | — | 1 |
| AS21566US | HOTAISLE - Hot Aisle Inc. | 256 | — | 1 |
| AS14885US | RAND-GRAPHICS - Rand Graphics, Inc. | 256 | — | 1 |
| AS397294US | CMH-ASTORIA-OR01 - Columbia Memorial Hospital | 256 | — | 1 |
| AS14617US | SELMED-2 - Select Medical Corporation | 256 | — | 1 |
| AS399208US | OVA-BASE-BLDG - SL Green Realty Corp | 256 | — | 1 |
| AS394775US | TELEPEER-AS - Telepeer Inc | 256 | — | 1 |
| AS18571US | WESTERNRESERVEGROUP - The Western Reserve Mutual Casualty Company | 256 | — | 1 |
| AS949US | XTOM - xTom | 256 | 256 | 2 |
| AS394165US | COGNC - City of Greenville, NC | 256 | — | 1 |
| AS402361US | PEI-99 - Perry | 256 | — | 1 |
| AS398702US | SRH-ASN - Scottish Rite Hospital for Children | 256 | — | 1 |
| AS26720US | SCHAEFFERS-INVESTMENT-RESEARCH - Schaeffer's Investment Research | 256 | — | 1 |
| AS63204US | NEW-MEXICO-MILITARY-INSTITUTE - The New Mexico Military Institute | 256 | — | 1 |