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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 |
| 256 |
| — |
| 1 |
| AS22991US | SPE-199-26-202 - SOCIETY OF PETROLEUM ENGINEERS (SPE), INC. | 256 | — | 1 |
| AS1909US | CAIDA - San Diego Supercomputer Center | 256 | 2K | 3 |
| AS54687US | IQLUSION - iqlusion | 256 | — | 1 |
| AS21511US | NCSBN - NCSBN, Inc. | 256 | — | 1 |
| AS33462US | JANUS-LEXINGTON-MA - JANUS Research Group | 256 | — | 1 |
| AS397334US | DOTFOODS - Dot Foods, Inc. | 256 | — | 1 |
| AS403033US | PRISM-STRATEGIES - Prism | 256 | 1 | 2 |
| AS54860US | SOUTHERN-ILLINOIS-HEALTHCARE - Southern Illinois Hospital Services | 256 | — | 1 |
| AS399344US | DISNEY-TELEVISION-STUDIOS - Disney Worldwide Services, Inc. | 256 | — | 1 |
| AS393371US | MB1640-1 - Microbilt Corporation | 256 | — | 1 |
| AS393717US | PUPPET - Puppet, Inc. | 256 | 1 | 2 |
| AS16745US | ADVANCED-RADIOLOGY-CONSULTANTS-LLC - Advanced Radiology Consultants, LLC | 256 | — | 1 |
| AS30467US | VONAGE-03 - Vonage Holdings, Inc. | 256 | — | 1 |
| AS26564US | NEW-CANAAN - Town of New Canaan | 256 | — | 1 |
| AS19725US | COHPWE - City Of Houston - Public Works | 256 | — | 1 |
| AS40673US | SHELTERCUSTOMER - Shelter Mutual Insurance | 256 | — | 1 |
| AS27487US | FHLBNY-AS - FEDERAL HOME LOAN BANK OF NY | 256 | — | 1 |
| AS397260US | CYNAXA - Cynaxa LLC | 256 | — | 1 |
| AS402500US | GCL-01 - Gecko | 256 | 256 | 2 |
| AS19150US | ABCWUA-ASN - Albuquerque Bernalillo County Water Utility Authority | 256 | — | 1 |
| AS402970US | RAVNIX-CUSTOMERS - RAVNIX | 256 | 65.5K | 2 |
| AS51844US | HASHT-ENTERPRISE - HashTable, Inc. | 256 | 6 | 7 |
| AS402845US | NEROA - Neroa | 256 | 4.1K | 2 |
| AS21654US | APOG-EHC - Apogee Telecom Inc. | 256 | — | 1 |
| AS394062US | COLLEGE-FOUNDATION-INC - College Foundation, Inc. | 256 | — | 1 |
| AS46857US | 10X-NETWORKS - SSL Wireless, LLC | 256 | 4.1K | 2 |
| AS36716US | DSO-ASN-01 - Morgan & Morgan, P.A. | 256 | — | 1 |
| AS393690US | AS-MARITIME - Massachusetts Maritime Academy | 256 | — | 1 |
| AS63274US | WVSU - West Virginia State University | 256 | — | 1 |
| AS396396US | PEARL-INSURANCE - Pearl and Associates, LTD | 256 | — | 1 |
| AS35918US | FCE-ASN - Forest City Enterprises, Inc. | 256 | — | 1 |
| AS14503US | STOWERS-RESOURCE-MANAGEMENT - Stowers Resource Management Inc | 256 | — | 1 |
| AS25724US | EXPENSEANYWHERE - Virtual Communications | 256 | — | 1 |
| AS393714US | ASN-SDMCU - San Diego Metropolitan Credit Union | 256 | — | 1 |
| AS399299US | STEARNSBANK-AS-01 - Stearns Financial Services, Inc | 256 | — | 1 |
| AS396262US | FSO-ASN - Fresno County Sheriff's Office | 256 | — | 1 |
| AS396161US | DSM-AIRPORT-AUTHORITY - Des Moines Airport Authority | 256 | — | 1 |
| AS40408US | KOUNT-INC - Kount, Inc. | 256 | — | 1 |
| AS400067US | BNP-ASNBLOCK-01 - BNP Media, INC | 256 | — | 1 |
| AS40849US | FULLBEAUTY-BRANDS - FullBeauty Brands Inc | 256 | — | 1 |
| AS32923US | SILVERPNT-CT - SILVER POINT CAPITAL, LP | 256 | — | 1 |
| AS398093US | ADA-TECH-LLC - ADA Tech, LLC | 256 | — | 1 |
| AS393803US | DT-DDS - Dealertrack, Inc. | 256 | — | 1 |
| AS22294US | ROTECH-HEALTHCARE - ROTECH HEALTHCARE, INC | 256 | — | 1 |
| AS394857US | RVRWLK - Riverwalk Consulting LLC | 256 | 65 | 3 |
| AS400466US | CCAP - County Commissioners Association of Pennsylvania | 256 | — | 1 |