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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 |
| 65.5K |
| 2 |
| AS27028US | SNEDG-LAN-WAN - SNET Diversified Group | 256 | — | 1 |
| AS23363US | CITYOFLEWISVILLE - City of Lewisville | 256 | — | 1 |
| AS54556US | MCCALLIE-SCHOOL - McCallie School | 256 | — | 1 |
| AS401803US | PEOPRK25 - Peoria Park District | 256 | — | 1 |
| AS30065US | DIETZ-WATSON - Dietz & Watson, Inc. | 256 | — | 1 |
| AS396051US | PABOE - Perth Amboy Board of Education | 256 | — | 1 |
| AS62678US | HORACEMANNSCHOOL - Horace Mann School | 256 | — | 1 |
| AS47101US | CITYOFYAKIMA - City of Yakima | 256 | 256 | 2 |
| AS397626US | CONTINENTAL-RESOURCES-INC - Continental Resources, Inc. | 256 | — | 1 |
| AS29797US | LIFEYIELD-1 - SEI Investments Developments, INC | 256 | — | 1 |
| AS399808US | LAER-AS-NYC1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS64250US | VOCALOGIC - DialPath | 256 | — | 1 |
| AS47059US | YORKHOSPITAL - York Hospital | 256 | — | 1 |
| AS394690US | ESL-FARM-AS - ESL Federal Credit Union | 256 | — | 1 |
| AS22485US | MONTANA-OPTICOM-AS22485 - Montana Opticom, LLC | 256 | — | 1 |
| AS36442US | MERCURY HEALTHCARE - WebMD, LLC | 256 | — | 1 |
| AS17197US | DAEDELUS - The Daedelus Group | 256 | 1 | 2 |
| AS46080US | ORTHOALLIANCE - OrthoAlliance MSO, LLC | 256 | — | 1 |
| AS13931US | AS-MH001 - MASONIC CHARITY FOUNDATION OF NEW JERSEY | 256 | — | 1 |
| AS394372US | APOG-UNION-MC - Apogee Telecom Inc. | 256 | — | 1 |
| AS32685US | AEG-VISION - AEG Vision | 256 | — | 1 |
| AS401976US | NEXTHOP-AS - Nexthop Systems Inc | 256 | 1 | 2 |
| AS26147US | QTS-DEN1 - Quality Technology Services, LLC | 256 | — | 1 |
| AS30479US | RLC-ASN-01 - Red Lion Controls, Inc. | 256 | — | 1 |
| AS393809US | WISPER-EASYN - Wisper ISP, LLC | 256 | — | 1 |
| AS395390US | ICSCVOICENET - ICS | 256 | — | 1 |
| AS400517US | LINESPEED - Linespeed | 256 | 256 | 2 |
| AS32730US | NAHQPU - LG CNS America Inc. | 256 | — | 1 |
| AS14384US | HOSTDESIGNS - HOST DESIGNS, LLC | 256 | — | 1 |
| AS26007US | SWICKTECH - Swick Technologies, LLC | 256 | — | 1 |
| AS53353US | AKRR - Alaska Railroad Corporation | 256 | — | 1 |
| AS396280US | CASENETLLC - Casenet, LLC | 256 | — | 1 |
| AS399201US | CMPS-AS - Compass Christian Church | 256 | — | 1 |
| AS22708US | QLA-DIA - CAVALIERS OPERATING CO LLC. | 256 | — | 1 |
| AS20380US | 20380 - Apex Systems, LLC | 256 | — | 1 |
| AS398707US | PUEBLO-DE-COCHITI-NSN - Pueblo de Cochiti | 256 | 65.5K | 2 |
| AS35990US | CSL-765-35990 - Citizen Support LLC | 256 | 4.1K | 2 |
| AS394952US | LMCU-ASN-01 - Lake Michigan Credit Union | 256 | — | 1 |
| AS46089US | AS2-NAVIS - Navis | 256 | — | 1 |
| AS40566US | HEC-HOU - Hilcorp Energy Company | 256 | — | 1 |
| AS32646US | LPC-ASN - Long Pond Capital, LP. | 256 | — | 1 |
| AS46607US | FORREST-T-JONES - Forrest T Jones & co, Inc. | 256 | — | 1 |
| AS396221US | RADCC-ASN - Rainbow | 256 | — | 1 |
| AS40506US | SMRH-AS - Sheppard, Mullin, Richter & Hampton | 256 | — | 1 |
| AS403089US | AS-AIRTAP - Airtap | 256 | — | 1 |
| AS15012US | TRIOLAB - NextStage Innovations LLC | 256 | — | 1 |