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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 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 | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| 512 |
| — |
| 2 |
| AS62645US | SNAPNAMES - SNAPNAMES.COM, INC. | 512 | 1 | 2 |
| AS33405US | HESS - Hess Corporation | 512 | — | 1 |
| AS32443US | US-REPSOLSERVICESCOMPANY - Repsol Services Company | 512 | — | 2 |
| AS30279US | TUHSD-AS1 - TOLLESON UNION HIGH SCHOOL DISTRICT #214 | 512 | — | 2 |
| AS40604US | N2N-TECHNOLOGIES - N2N Technologies, Inc. | 512 | — | 2 |
| AS398480US | RBH - Robinson Bradshaw | 512 | — | 2 |
| AS12055US | CLEARBEARING-00 - Clearbearing Inc. | 512 | 1 | 3 |
| AS1003US | ANDREWNET - andrewnet | 512 | 11 | 13 |
| AS399712US | ENTEFY-ASN - Entefy Inc. | 512 | — | 2 |
| AS400159US | WAYFAIR-CAMPUS - Wayfair LLC | 512 | — | 1 |
| AS27001US | DAYSINNHOTELCIRCLE-GUEST-INTERNET - Days Inn Hotel Circle Sea World | 512 | — | 1 |
| AS395464US | BEREAC - Berea College | 512 | — | 2 |
| AS54362US | OGDEN-CITY-CORPORATION - Ogden City Corporation | 512 | — | 1 |
| AS397277US | NAUAS - NAU Country Insurance Company | 512 | 2 | 4 |
| AS27468US | GOODWILL-INDUSTRIES-OF-ORANGE-COUNTY - Goodwill Industries of Orange County | 512 | — | 2 |
| AS399206US | ASSOCIATED-COMPUTER-SYSTEMS - Associated Computer Systems, Ltd | 512 | — | 2 |
| AS26176US | AJA - AJA Video Systems, Inc. | 512 | — | 2 |
| AS22713US | CAC-HQ2 - Credit Acceptance Corporation | 512 | — | 1 |
| AS396220US | AS-SNOPUD - Public Utility District No. 1 of Snohomish County | 512 | — | 1 |
| AS47056US | AS-NFM-01 - Nebraska Furniture Mart, Inc. | 512 | — | 2 |
| AS16693US | AS-MIKES-HARD - mikes hard lemonade | 512 | — | 2 |
| AS400918US | TWOROCKLAN - Two Rock LAN | 512 | — | 2 |
| AS399066US | MMS-PUBLIC-AS01 - Massachusetts Medical Society | 512 | — | 2 |
| AS397616US | CITY-OF-PRESCOTT-AZ - CITY OF PRESCOTT | 512 | — | 2 |
| AS402213US | BUFFALO BILLS STADIUM - Bills stadium and events company llc | 512 | — | 2 |
| AS40288US | CFCU-AS - CONGRESSIONAL FEDERAL CREDIT UNION | 512 | — | 2 |
| AS36796US | WCNX - Waste Connections Inc. | 512 | — | 2 |
| AS14999US | USERWORLD - Userworld, INC | 512 | — | 2 |
| AS46600US | E2-SERVICES-01 - E2 Services Inc. | 512 | — | 2 |
| AS62877US | AIR-METHODS-ASN-FOR-DENVER-OMAHA-SAN-BERNARDINO - AIR METHODS | 512 | — | 1 |
| AS18956US | LLAMA-NETWORKS-01 - Llama Networks LLC | 512 | 2 | 4 |
| AS63166US | TGNA-WHAS - TEGNA Inc. | 512 | — | 2 |
| AS397488US | NEW-ALBANY-PLAIN-LOCAL-SCHOOLS-AS - New Albany-Plain Local School District | 512 | 4.1K | 3 |
| AS46773US | AS46773 - INTEGRATED DATA PROCESSING, INC. | 512 | — | 2 |
| AS16777US | NET-PROVPHP - Providence Health Plan | 512 | — | 2 |
| AS62907US | ZSCALER-CORP - ZSCALER, INC. | 512 | — | 2 |
| AS401347US | LCS-FIBERCOM-LLC - LCS Fibercom LLC | 512 | — | 2 |
| AS400236US | EACS-5 - East Allen County Schools | 512 | — | 2 |
| AS395133US | MEDQUEST - MedQuest Associates, Inc. | 512 | — | 2 |
| AS397429US | SEATTLE-HQ - EXPEDIA, INC | 512 | — | 2 |
| AS21990US | LIBERTYSECURITY-1 - Liberty Security Services LLC | 512 | — | 1 |
| AS13472US | MATRIX-CCHN - Matrix Medical Network | 512 | — | 2 |
| AS32973US | BCL-ASN - Bracebridge Capital, LLC | 512 | — | 2 |
| AS26006US | EXODO - Exodo LLC | 512 | 272 | 4 |
| AS394913US | AIRGRIDS - AirGrids | 512 | — | 2 |
| AS19480US | CPL - CHICAGO PUBLIC LIBRARY | 512 | — | 2 |