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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,661 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,490 |
| 512 |
| 4.1K |
| 2 |
| AS399458US | COMARCH-NET-US-1 - Comarch Inc | 512 | — | 2 |
| AS394158US | ONCU-M - ONE NEVADA CREDIT UNION | 512 | — | 2 |
| AS22030US | ZIPCON-AS-1 - Zipcon LLC | 512 | — | 1 |
| AS397957US | EMEA-PUBLIC - HEWLETT PACKARD ENTERPRISE COMPANY | 512 | — | 2 |
| AS36860US | BANCFIRST - BancFirst | 512 | — | 2 |
| AS13997US | RD-CHI-AS - Rapid Displays, Inc | 512 | — | 2 |
| AS26011US | LMCSC - Lexington Medical Center | 512 | — | 2 |
| AS398219US | INMAR-DC2 - Inmar, Inc. | 512 | — | 1 |
| AS398002US | TGNA-WQAD - TEGNA Inc. | 512 | — | 2 |
| AS32346US | SAKURA-SEA - SAKURA LTD. | 512 | — | 2 |
| AS27023US | NTT-DATA-INC - NTT Data Inc | 512 | — | 2 |
| AS54890US | BBIX-USA-NET - BBIX USA, INC. | 512 | — | 1 |
| AS23042US | SJRMC-ASN - San Juan Regional Medical Center Inc. | 512 | — | 2 |
| AS46569US | WALSH-COLLEGE - Walsh College of Accountancy and Business Administration | 512 | — | 2 |
| AS39983US | PBGC-HQ-AS - Pension Benefit Guaranty Corp. | 512 | — | 2 |
| AS201834US | SupplyFrame Supply Frame, Inc. | 512 | — | 2 |
| AS400952US | KISSUSA-GA - KISS NAIL PRODUCTS, INC | 512 | — | 2 |
| AS393929US | SIMPATICO - Simpatico Systems | 512 | — | 2 |
| AS401661US | EMBNEX-AS - EMBNEX, LLC | 512 | 65.5K | 3 |
| AS397362US | HTS-WIRELESS-01 - Hudson Technology Solutions, Inc. | 512 | — | 2 |
| AS54247US | BATTERY-MANAGEMENT - Battery Ventures | 512 | — | 2 |
| AS402551US | PIEDMON-ASN - Piedmont | 512 | — | 2 |
| AS21616US | NECA - National Exchange Carrier Association, Inc. | 512 | — | 2 |
| AS398407US | INTELIUM-1 - Intelium Corp. | 512 | — | 2 |
| AS401366US | VOX-FLOW - Vox Flow LLC | 512 | 1 | 3 |
| AS14057US | TFIC-1 - TENNESSEE FARMERS MUTUAL INSURANCE COMPANY | 512 | — | 2 |
| AS30301US | INTRUST-WICHITA - INTRUST Bank, N.A. | 512 | — | 2 |
| AS394066US | CTC-AS1 - The Chugwater Telephone Company | 512 | — | 2 |
| AS400211US | PORT80 - Port 80 | 512 | 65.5K | 3 |
| AS393518US | CLAIMREMEDI-AS - ClaimRemedi, Inc. | 512 | — | 2 |
| AS394450US | MCKINSEY-US-ADP - McKinsey & Company, Inc. | 512 | — | 2 |
| AS36232US | NEXTGI - Nextgi, LLC. | 512 | 1 | 3 |
| AS55057US | CHI-ILAG - Office of the Illinois Attorney General | 512 | — | 2 |
| AS402084US | AES-LLC-01 - AES Services LLC | 512 | 1 | 3 |
| AS30435US | H9K-1 - Hal 9000 LLC | 512 | — | 2 |
| AS55239US | VWNA-AS2 - Volkswagen Group of America, Inc. | 512 | — | 2 |
| AS206628US | EzriCloud Tianyu-Zhu | 512 | 4 | 6 |
| AS10764US | STARTAP - University of Illinois | 512 | — | 1 |
| AS399285US | CSLICO - Citizens Financial Corporation | 512 | — | 2 |
| AS20163US | SUNMED - Sunrise Medical, Inc. | 512 | — | 2 |
| AS395915US | ENS - Edge Network Services LLC | 512 | 17 | 4 |
| AS401622US | OMNISSA-WDC - Omnissa, LLC | 512 | 1 | 2 |
| AS20047US | CITYOFVABEACH - City of Virginia Beach, Virginia | 512 | — | 2 |
| AS26722US | MAIN-SEQUENCE-TECHNOLOGIES - Main Sequence Technology, Inc. | 512 | 3 | 5 |
| AS22471US | MOTEMARINELAB - Mote Marine Laboratory | 512 | — | 1 |
| AS46274US | UPHS - Penn Medicine | 512 | — | 2 |