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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 |
| AS394595US | SENSATA - Sensata Technologies, Inc. | 256 | — | 1 |
| AS399043US | PTOI - Puyallup Tribe of Indians | 256 | — | 1 |
| AS400282US | UPX - UPX US LLC | 256 | 65.5K | 3 |
| AS54306US | AS-SANTA-MONICA-DIA - Guggenheim Services LLC | 256 | — | 1 |
| AS398433US | MANATT - Manatt, Phelps & Phillips | 256 | — | 1 |
| AS397587US | DATAXPORT-ELP - DataXport.Net, LLC | 256 | — | 1 |
| AS56640US | BAIN-AND-COMPANY-INC-UNITED-KINGDOM BAIN AND COMPANY INC UNITED KINGDOM | 256 | — | 1 |
| AS32051US | SULLCROM - SULLCROM | 256 | — | 1 |
| AS395286US | BELOITHEALTHSYSTEM - Beloit Health System, Inc. | 256 | — | 1 |
| AS400225US | NORDSON-192 - Nordson Corporation | 256 | — | 1 |
| AS25632US | NORTHBAYHEALTHCARECORP - NorthBay Healthcare Corporation | 256 | — | 1 |
| AS62529US | AS-APEX - Apex Development Group LLC | 256 | — | 1 |
| AS54928US | MSMC-FL - Mount Sinai Medical Center of Florida, Inc. | 256 | — | 1 |
| AS397510US | CPI - Consumers Power, Inc. | 256 | — | 1 |
| AS30244US | PSI-NY-1 - Amherst Pierpont Securities | 256 | — | 1 |
| AS21851US | KAINOSCOM-SPRINGVALLEY - Kainos Technologies LLC | 256 | — | 1 |
| AS22568US | AS-SKYFI - Sky Fi | 256 | — | 1 |
| AS27296US | WU-PRIMARY - Wilmington University, Inc. | 256 | — | 1 |
| AS54068US | CGS-BGP - City of Greenville, SC | 256 | — | 1 |
| AS29758US | SAMBATV-LAS - Samba TV, Inc. | 256 | 1 | 2 |
| AS1075US | AS-WITC-01 - Wiseinfotec.net LLC | 256 | — | 1 |
| AS33382US | CRYPTICSTUDIOS-HQ - CRYPTIC STUDIOS, INC. | 256 | — | 1 |
| AS39482US | sfm-hk Supply Frame, Inc. | 256 | — | 1 |
| AS11600US | PARALLAX - Parallax Services LLC | 256 | 1 | 2 |
| AS27177US | SIMPLEASN-SIMPLEHUMAN-US - SIMPLEHUMAN, LLC | 256 | — | 1 |
| AS395375US | AMC-ASN - Athens Micro | 256 | — | 1 |
| AS397614US | GTLAKES - Great Lakes Energy Cooperative | 256 | 26 | 12 |
| AS396024US | NORTHWESTMLS - Northwest Multiple Listing Service | 256 | 1 | 2 |
| AS393246US | AS-AFILIAS-IAD1 - Afilias, Inc. | 256 | 1 | 2 |
| AS46291US | LODCO - LOD Communications, Inc. | 256 | 1 | 2 |
| AS22336US | PELLA - Pella Corporation | 256 | 1 | 2 |
| AS62526US | AXCELIS-TECHNOLOGIES - AXCELIS TECHNOLOGIES | 256 | — | 1 |
| AS397906US | JUVILEX - JUVILEX | 256 | — | 1 |
| AS402235US | UNWRD-CO-01 - Unwired Access, LLC | 256 | 8.2K | 3 |
| AS19359US | 19359 - GID Investment Advisers LLC | 256 | — | 1 |
| AS17218US | LC-647 - Linfield University | 256 | 1 | 2 |
| AS395914US | ADVWIRELESS - Advanced Wireless | 256 | 65.5K | 2 |
| AS401279US | FREECLOUD-01 - Free Cloud Information Technology Co., LTD | 256 | — | 1 |
| AS400904US | KEY-MANAGEMENT - Key Investment | 256 | — | 1 |
| AS397718US | RICHLAND-BGP-01 - Richland County | 256 | — | 1 |
| AS402065US | QVQNETWORK - QVQNETWORK LLC | 256 | 1 | 2 |
| AS402494US | BARTLETTDAIRY-JFK-SDWAN - Bartlett | 256 | — | 1 |
| AS398924US | ZK-IDENTITY - APPBASE.AI INC. | 256 | — | 1 |
| AS26126US | READING-AREA-COMM-COL - RACC | 256 | — | 1 |
| AS20210US | VITRUVIAN-HEALTH-01 - Vitruvian Health | 256 | — | 1 |
| AS394443US | RSC-HQ-CIR1 - RADIO SYSTEMS CORPORATION | 256 | — | 1 |