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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,149 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,243 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,670 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,953 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,395 |
| BigBox BigBox Softwares LLC |
| 256 |
| 2 |
| 3 |
| AS203898US | CLOUDFLARENET-UK Cloudflare Inc | 256 | 2 | 3 |
| AS32532US | KMC-37-ASN - Kuakini Medical Center | 256 | — | 1 |
| AS63144US | MCIT - Macomb County, Michigan | 256 | — | 1 |
| AS62504US | ACCIONINC-ASN - LiftFund Inc. | 256 | — | 1 |
| AS395850US | BRYANTBANK - BRYANT BANK | 256 | — | 1 |
| AS26640US | OGFIBER - Oso Grande Technologies, Inc. | 256 | — | 1 |
| AS400340US | MATSON-NAV - Matson Navigation Company, Inc. | 256 | — | 1 |
| AS19914US | AEG-SPRINTCTR - AEG Kansas City Arena, LLC | 256 | — | 1 |
| AS213801US | NATHANMOORE Nathan Moore | 256 | 17 | 3 |
| AS1809US | PTFS - Performance Team | 256 | — | 1 |
| AS399485US | TCW-AS-TOR - The TCW Group, Inc. | 256 | — | 1 |
| AS14623US | LCU-NET - Lubbock Christian University | 256 | — | 1 |
| AS11926US | HARTSOFTWARE - Hart Software, Inc. | 256 | — | 1 |
| AS26982US | SNOWMOON - Snowmoon Technologies | 256 | — | 1 |
| AS40374US | HIDHO - High Density Hosting, Inc. | 256 | — | 1 |
| AS399551US | MILLENNIUM-SYSTEMS-INC - Millennium Systems, Inc. | 256 | 65.5K | 2 |
| AS26220US | ANALYSISGROUP - Analysis Group, Inc. | 256 | — | 1 |
| AS22415US | AVANTWIRELESS - AvantWireless LLC | 256 | — | 1 |
| AS27515US | WORKD-LAB - Workday, Inc. | 256 | — | 1 |
| AS672US | DNIC-AS-00672 - Headquarters, USAISC | 256 | — | 1 |
| AS11217US | CLM-ASN - Carter Ledyard & Milburn LLP | 256 | — | 1 |
| AS63460US | DIGITALSIMPLISTICS - Digital Simplistics, Inc. | 256 | — | 1 |
| AS30537US | NUMERICACU - Numerica Credit Union | 256 | — | 1 |
| AS399613US | SMESTADTECH-01 - Smestad Tech LLC | 256 | 3 | 3 |
| AS394966US | DFCU - Direct Federal Credit Union | 256 | — | 1 |
| AS395159US | BOULDER-COMMUNITY-HEALTH - Boulder Community Hospital | 256 | — | 1 |
| AS30096US | SUMTER-COUNTY-BOCC - Sumter County Board of County Commissioners | 256 | — | 1 |
| AS397949US | REG-US-ASN-01 - Chevron Corporation | 256 | — | 1 |
| AS397660US | LOCALITY-NETWORKS-01 - Locality Networks inc | 256 | — | 1 |
| AS33431US | MLS-NET-01 - Major League Soccer | 256 | — | 1 |
| AS394960US | WORKSIGHTED - Worksighted Inc | 256 | — | 1 |
| AS401185US | EVOLUTIONFIBER-FL - Evolution Fiber LLC | 256 | — | 1 |
| AS22620US | BOARDPENSIONS-PRESBYTERIAN - The Board of Pensions of the Presbyterian Church (USA) | 256 | — | 1 |
| AS32761US | WASSE-NYC - Wasserstein & Co. | 256 | — | 1 |
| AS18967US | GOUCHER COLLEGE - Goucher College | 256 | — | 1 |
| AS32871US | SCHWABE-NORTH-AMERICA-01 - Nature's Way | 256 | — | 1 |
| AS395603US | NASSAU-COLISEUM - AEG | 256 | — | 1 |
| AS393373US | MORANTELECOLLC - MoranTeleco LLC | 256 | — | 1 |
| AS33270US | PMCSAZ - Preferred Medical Claim Solutions | 256 | — | 1 |
| AS401236US | SBI - South Bay Internet | 256 | — | 1 |
| AS46885US | CIML-6-US - Carlyle Investment Management L.L.C. | 256 | — | 1 |
| AS394355US | MGRM - MGRM Pinnacle, Inc. | 256 | — | 1 |
| AS400989US | YDIO - Ydio LLC | 256 | 1.7K | 28 |
| AS62546US | FRISCOTXISD - Frisco Independent School District | 256 | — | 1 |
| AS26875US | HBT-AS-01 - Heartland Bank and Trust Company | 256 | — | 1 |
| AS10988US | COLLEGE-OF-WESTERN-IDAHO - College of Western Idaho | 256 | — | 1 |