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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 |
| — |
| 2 |
| AS20193US | MODTECHGROUP - SineWave Technologies, Inc. | 512 | — | 2 |
| AS14149US | ICONFITNESS-MAIN - Icon Health & Fitness Inc | 512 | — | 2 |
| AS218501US | ORG-NNL54-AS Northwave Networks LLC | 512 | — | 2 |
| AS23397US | CME-VEN-AS23397 - Chicago Board of Trade | 512 | — | 2 |
| AS36571US | WLWT-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS53369US | COUNTY-OF-ALBEMARLE - County of Albemarle | 512 | — | 2 |
| AS398145US | MHM-DATACENTER-01 - Centurion Group, Inc. | 512 | — | 2 |
| AS394149US | VI-CONCEPTS - VI Concepts, Inc. | 512 | 16 | 2 |
| AS32236US | TRANSCOM-BGP-01 - TRANSCOM | 512 | — | 2 |
| AS13932US | WHHS - Washington Hospital Healthcare Sysem | 512 | — | 2 |
| AS400419US | CNEHS - CARE NEW ENGLAND HEALTH SYSTEM | 512 | — | 2 |
| AS15266US | THE-TEAM-COMPANIES - Cast & Crew LLC | 512 | — | 2 |
| AS399556US | ECBOE - Effingham County Board of Education | 512 | — | 1 |
| AS26511US | AACT-INTERNET - AAA Cooper Transportation, Inc. | 512 | — | 2 |
| AS16927US | IHOPKC - IHOPKC | 512 | — | 2 |
| AS400101US | AS-RINGFREE - Ringfree Communications, Inc | 512 | — | 2 |
| AS46307US | CENTAURI - Centauri Solutions, LLC | 512 | 2.1K | 8 |
| AS11657US | LEGG-MASON-CORP-NET - Legg Mason & Co., LLC | 512 | — | 2 |
| AS53902US | FLUXORUS-NETWORKS - Fluxorus Networks | 512 | 256 | 3 |
| AS19193US | SPIDERROCK-GW - SPIDERROCK HOLDINGS, LLC | 512 | — | 2 |
| AS393485US | TIFFANYCO - Tiffany and Company | 512 | — | 2 |
| AS399988US | ENC-HOLDING-ASN - ENC Holding Corporation | 512 | — | 2 |
| AS53607US | SDCS-AS1 - Synergy Data Center & Services | 512 | — | 2 |
| AS3592US | TRINCOLL-AS - Trinity College | 512 | — | 2 |
| AS22554US | PEWNETWORK - The Pew Charitable Trusts | 512 | — | 2 |
| AS46566US | CCS - CAPITAL Card Services, Inc. | 512 | — | 2 |
| AS19449US | CONCURRENT - Concurrent Technologies Corp. | 512 | — | 2 |
| AS16680US | IRONBOW - Iron Bow Technologies, LLC | 512 | — | 2 |
| AS32549US | JCISD-1 - Jackson County Intermediate School District | 512 | — | 1 |
| AS398323US | PSBOS-1 - Provide Support LLC | 512 | — | 2 |
| AS39971US | BELL-IT-SERVICES - Bell IT Services, Inc. | 512 | 1 | 3 |
| AS55084US | DRMC-AS-1 - DuBois Regional Medical Center | 512 | — | 1 |
| AS13405US | FEATHER-IT-NET - Feather IT LLC | 512 | 256 | 3 |
| AS206625US | EHI-AME-AS Enterprise Holdings, Inc. | 512 | — | 1 |
| AS53521US | CDS-200 - Complete Discovery Source | 512 | — | 2 |
| AS23525US | CNC-CNB - Canandaigua National Corporation | 512 | — | 2 |
| AS394209US | ECBOCES-VNETS - East Central BOCES | 512 | 65.5K | 3 |
| AS15126US | SMAI - Suzuki Marine USA, LLC | 512 | — | 2 |
| AS395974US | COMCAST-MES - Comcast Cable Communications, LLC | 512 | — | 2 |
| AS400958US | SYNIAC - Syniac | 512 | — | 2 |
| AS30667US | WHEELERSLC - WHEELER MACHINERY CO. | 512 | — | 2 |
| AS7215US | AHNET-AS - Ntirety, Inc. | 512 | 2 | 4 |
| AS2633US | NAS1-AS - National Academy of Sciences | 512 | — | 2 |
| AS62977US | PAPEGROUP - The Pape Group, Inc. | 512 | — | 2 |
| AS18916US | PSFT-ECENTER - Oracle Corporation | 512 | — | 2 |
| AS402444US | LUMMI-NATION-CONNECT - Lummi | 512 | 65.5K | 2 |