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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 |
| 16 |
| 2 |
| AS397150US | UNION-HEALTH-SYSTEM - Union Hospital, Inc. | 256 | — | 1 |
| AS394825US | AS-199-193-56-0 - Pioneer Technology | 256 | — | 1 |
| AS62673US | SHRZ - Schurz Communications Inc. | 256 | — | 1 |
| AS400068US | LION-TECHNOLOGY-570 - LION TECHNOLOGY INC | 256 | — | 1 |
| AS403060US | SIGNAL9-LAB-NET - Cloud | 256 | 17 | 3 |
| AS398124US | BLOONO-AS-01 - Bloono, Inc. | 256 | — | 1 |
| AS15239US | BRA-ASN - Franklin Mutual Insurance Company | 256 | — | 1 |
| AS393548US | ABRIA-AS-01 - AbriaCloud Technologies | 256 | — | 1 |
| AS46727US | FES - FES | 256 | — | 1 |
| AS19660US | KQED-ORG-02 - KQED Inc. | 256 | — | 1 |
| AS13801US | CONCORD-CARLISLE-MA - Concord-Carlisle Regional School District | 256 | — | 1 |
| AS14801US | HPU - Hawaii Pacific University | 256 | — | 1 |
| AS397618US | GLOBITECH-INC - GlobiTech Incorporated | 256 | — | 1 |
| AS18517US | LIMRA-LOMA-LG18 - LL Global Inc | 256 | — | 1 |
| AS208271US | SMAIGC-AS-LLC SMAIGC LLC | 256 | — | 1 |
| AS15099US | MONROE-COUNTY-MI-PUBLIC-ASN - County of Monroe | 256 | — | 1 |
| AS53747US | WSSD-1-ASN - Wall Street Systems Delaware, Inc | 256 | — | 1 |
| AS13753US | AS-BFG - Bedrock Fiber Group, inc. | 256 | — | 1 |
| AS200825US | Weiqi-AS Weiqi Yu | 256 | 2 | 3 |
| AS402274US | ZENNET - ZenNet LLC | 256 | — | 1 |
| AS398886US | PEC-AS-01 - Progressive Expert Consulting, Inc. | 256 | — | 1 |
| AS26377US | EXPERTEKSYSTEMS - Expertek Systems Inc. | 256 | — | 1 |
| AS14262US | CALUMET-ASN-01 - CALUMET COUNTY | 256 | — | 1 |
| AS40105US | PRV-GAF-US-SE - PriVerify Corp. | 256 | — | 1 |
| AS19386US | STTX-SPOKANE - Spokane Tribe Telecommunications Exchange, LLC | 256 | — | 1 |
| AS393426US | HALP - Harris Associates L.P. | 256 | — | 1 |
| AS393863US | DMA-IND-DC - DMA | 256 | — | 1 |
| AS16707US | UNIFI-MFG-INC - Unifi, Inc | 256 | — | 1 |
| AS400860US | AS-NEXUSHOSTING - Nexuscore Hosting | 256 | — | 1 |
| AS397692US | OXBOW-ASN-01 - OXBOW CARBON LLC | 256 | — | 1 |
| AS393783US | SEIBELS - Seibels Technology Solutions, Inc. | 256 | — | 1 |
| AS40296US | RUBENSTEIN-COMMUNICATIONS - Rubenstein Associates, Inc. | 256 | — | 1 |
| AS393405US | SCCUSD-AS - Saint Charles Community Unit School District 303 | 256 | — | 1 |
| AS25972US | SAP-SE-PAL - SAP Labs | 256 | — | 1 |
| AS53634US | AMDAF-AS - AM-DAF | 256 | — | 1 |
| AS394191US | YPP-NET-KENNER - Your Preferred Printer, LLC | 256 | 1 | 2 |
| AS46325US | SMH-AS-01 - Stinson Morrison Hecker LLP | 256 | — | 1 |
| AS402277US | MILLERSE-DTDB-01 - Miller Sports + Entertainment | 256 | — | 1 |
| AS22941US | AS-NOCMGT-01 - The HelpDesk Inc | 256 | — | 1 |
| AS400845US | ASN-ECX - ECXSYSTEMS, LLC | 256 | — | 1 |
| AS397948US | SUCCESSION-SYSTEMS-01 - Succession Systems LLC | 256 | — | 1 |
| AS393274US | DARIGOLD-NET - Darigold, Inc. | 256 | — | 1 |
| AS401387US | TWR-O-1 - TWR Tech, LLC | 256 | — | 1 |
| AS20166US | 1FBUSA-1 - 1st Financial Bank USA | 256 | — | 1 |
| AS398928US | THOMSON-REUTERS - Thomson Reuters U.S. LLC | 256 | — | 1 |
| AS399943US | FIGFCU-P1 - Farmers Insurance Group Federal Credit Union | 256 | — | 1 |