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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 |
| 4.1K |
| 3 |
| AS62702US | AS62702 - Nimble Storage, Inc. | 256 | — | 1 |
| AS40179US | HC06 - Hunterdon Central Regional High School | 256 | — | 1 |
| AS397185US | LACU - Corda Credit Union | 256 | — | 1 |
| AS32602US | CORP-HDQTRS - ROI Solutions, LLC | 256 | — | 1 |
| AS40039US | ALPHA-N-OMEGA-AOS-40 - ALPHA AND OMEGA SEMICONDUCTOR INCORPORATED | 256 | — | 1 |
| AS54279US | SMT - SportsMEDIA Technology Corporation | 256 | — | 1 |
| AS401199US | AS401199 - TenSpire Network | 256 | — | 1 |
| AS36311US | CCU-ATT-01 - Capital Credit Union | 256 | — | 1 |
| AS395548US | HFCU-NET - Hughes Federal Credit Union | 256 | — | 1 |
| AS394425US | ADENAHEALTHSYSTEM - Adena Health System | 256 | — | 1 |
| AS399692US | TCAD - Travis Central Appraisal District | 256 | — | 1 |
| AS33644US | OSUFCUASN - Oregon State Credit Union | 256 | — | 1 |
| AS397697US | WHE-ASN-01 - Wright-Hennepin Cooperative Electric Association | 256 | — | 1 |
| AS397968US | BBC-ASN - SIMPLE CLOUD SOLUTION LLC | 256 | 258 | 4 |
| AS6500US | NEXUS-22-6500 - Nexusguard, Inc | 256 | — | 1 |
| AS19692US | EMH - Ephraim McDowell Health, Inc. | 256 | 256 | 2 |
| AS46669US | AMERICAN-PACIFIC-MORTGAGE - American Pacific Mortgage Corp. | 256 | — | 1 |
| AS399749US | AS-RTI-01 - Restaurant Technologies, Inc. | 256 | — | 1 |
| AS62750US | LIBERTYMEDIA - Liberty Media Corporation | 256 | — | 1 |
| AS399451US | MSDLT-ASN-01 - METROPOLITAN SCHOOL DISTRICT OF LAWRENCE TOWNSHIP | 256 | — | 1 |
| AS27290US | DISCRETE-TECH-SVCS - Discrete LLC | 256 | — | 1 |
| AS397971US | MISD-28-ASN-01 - Midlothian Independent School District | 256 | — | 1 |
| AS36109US | BCL-28205 - Bahakel Communications Ltd. | 256 | — | 1 |
| AS394086US | STORMGEO-US - StormGeo Corp, Inc. | 256 | 65.5K | 2 |
| AS402160US | AS-TCMSD-001 - Truth or Consequences Municipal Schools | 256 | 256 | 2 |
| AS394571US | WATERSTONE - Waterstone Mortgage | 256 | — | 1 |
| AS18710US | ASHTONSETH - Ashton S Williams, Sole Proprietorship | 256 | 1 | 2 |
| AS26781US | BHSALA - Baptist Health System of Alabama | 256 | — | 1 |
| AS36186US | 3DS-AS02 - 3ds Communications LLC | 256 | 256 | 2 |
| AS398254US | PRELUDE-SERVICES - Prelude Services | 256 | — | 1 |
| AS402851US | UTURN-ASN - UTurn | 256 | 256 | 2 |
| AS399820US | ATOMIC-NETWORKS-1 - SPARKED HOST LLC | 256 | 1 | 2 |
| AS55196US | LTCP-AS2013 - Long Term Care Partners, LLC | 256 | — | 1 |
| AS394193US | CMNJ-ASN - County of Morris OIT | 256 | — | 1 |
| AS398841US | AVERITT-IP-BLOCK - Averitt Express, INC | 256 | — | 1 |
| AS396840US | SPI-BLOCK-A - Sky Path Inc. | 256 | — | 1 |
| AS13827US | WASHPOST - Washington Post | 256 | — | 1 |
| AS398552US | CISD-ASN - Cleburne Independent School District | 256 | — | 1 |
| AS54050US | GPMLIFE - Government Personnel Mutual Life Insurance Company | 256 | — | 1 |
| AS30050US | MARATHON-ASSET - Marathon Asset | 256 | — | 1 |
| AS36082US | BIDS - BIDS Trading L.P. | 256 | — | 1 |
| AS399317US | GCPHD-CBH - Columbia Basin Hospital | 256 | — | 1 |
| AS398126US | LPSO - Computer Sales & Services, Inc. | 256 | — | 1 |
| AS53931US | TALQ-NET-01 - Talquin Electric Coop, Inc | 256 | — | 1 |
| AS14455US | SUNGARD-RECOVERY - Sungard Availability Network Solutions, Inc. | 256 | — | 1 |
| AS16590US | DGF-SERVICES - DGF Services, LLC | 256 | — | 1 |