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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) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218M | 24,389 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,302 |
| 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.
32,169 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,341 |
| 1K |
| — |
| 4 |
| AS25971US | MILWAUKEE-PS - Milwaukee Public Schools | 1K | — | 4 |
| AS395220US | LCCA-ASN - Life Care Centers of America, Inc. | 1K | — | 4 |
| AS36469US | ATL-COLO - Noble Systems Corporation | 1K | — | 4 |
| AS19198US | DRW-HOLDINGS - DRW Holdings, LLC | 1K | — | 4 |
| AS396971US | SLIC-ASN-4 - Slic Network Solutions, Inc | 1K | — | 4 |
| AS40203US | GROWMARK - GROWMARK, Inc. | 1K | — | 1 |
| AS21913US | MAINFREIGHTUS-AS - Mainfreight, Inc. | 1K | — | 4 |
| AS6652US | PIMA-COLLEGE - Pima Community College | 1K | — | 1 |
| AS22500US | MAW-INTF-WORLD - MAW COMMUNICATIONS | 1K | — | 1 |
| AS33054US | MCCRACKENFS - McCracken Financial Software | 1K | — | 3 |
| AS46973US | REALOGY-WEBSERVICES - Realogy Group LLC | 1K | — | 4 |
| AS17206US | MOUNTAIN-AMERICA - Mountain America Credit Union | 1K | — | 4 |
| AS400285US | GUSD-AS - Gilbert Public Schools | 1K | — | 1 |
| AS26820US | HERFF-JONES - Herff Jones | 1K | — | 4 |
| AS20127US | KLEINSCHMIDT - Kleinschmidt Inc. | 1K | 2 | 6 |
| AS394759US | TWIN-EAGLE-RESOURCE-MANAGEMENT-LLC - TWIN EAGLE RESOURCE MANAGEMENT, LLC | 1K | — | 3 |
| AS25864US | ZAYO-CLOUD-TOR01 - Latisys-Irvine, LLC | 1K | 2 | 6 |
| AS22446US | MEDLINE - Medline Industries | 1K | — | 3 |
| AS397700US | LXXIX-PROJECT-LAB-01 - LXXIX Project Lab LLC | 1K | 4.1K | 4 |
| AS36344US | ADVAN-CAST - Virtuozzo Inc. | 1K | — | 4 |
| AS15342US | DDPMI-1 - DELTA DENTAL PLAN OF MICHIGAN | 1K | — | 4 |
| AS40518US | MANOR-CARE - HCR Manorcare | 1K | — | 4 |
| AS397965US | COUNTY-OF-TRAVIS-1 - Travis County, Texas | 1K | — | 4 |
| AS26263US | CLV-MULTIHOME - City of Las Vegas | 1K | — | 1 |
| AS53425US | NEMC-WAN - North Carolina Electric Membership Corp | 1K | — | 4 |
| AS5026US | LVVWD - Las Vegas Valley Water District | 1K | — | 4 |
| AS46357US | CALPOLY-NETLAB - California Polytechnic State University | 1K | 1 | 2 |
| AS46735US | FARR-FIN - Certigo, Inc | 1K | — | 1 |
| AS393577US | TRITAN-DEVELOPMENT - Tritan Development | 1K | 8.2K | 11 |
| AS19210US | SYNCHRONOSS - SYNCHRONOSS TECHNOLOGIES | 1K | 3 | 7 |
| AS31977US | FECRWY-1 - Florida East Coast Railway LLC | 1K | — | 4 |
| AS33543US | NOBEL-129-33543 - NobelBiz, Inc. | 1K | — | 3 |
| AS46798US | SSCSINC - Service Station Computer Systems, Inc. | 1K | — | 2 |
| AS399961US | BELMONT-UNIVERSITY - Belmont University | 1K | — | 1 |
| AS22084US | GEI-NET - John Hagee Ministries | 1K | — | 3 |
| AS211481US | telcomllc Telcom LLC | 1K | — | 1 |
| AS40343US | USSI-SKYFIBER - USSI Global | 1K | 1 | 4 |
| AS17034US | GL-945-17034 - Gozunga LLC | 1K | 2K | 3 |
| AS396239US | CMW-WIRELESS-1 - CMW Wireless LLC | 1K | — | 1 |
| AS16933US | ADVANTAS - Advantas Internet Solutions | 1K | — | 4 |
| AS401798US | GSCCCA-NET - GSCCCA | 1K | — | 3 |
| AS1034US | AMS-BTC-CRAY - HEWLETT PACKARD ENTERPRISE COMPANY | 1K | — | 1 |
| AS27014US | ORLANDO-HEALTH - Orlando Health, INC | 1K | — | 1 |
| AS26252US | LNA-AS - Legrand North America, Inc. | 1K | — | 3 |
| AS33674US | COGNEX-HQ - Cognex Corporation | 1K | — | 4 |
| AS394304US | SACRAMENTO-KINGS - Sacramento Downtown Arena, LLC | 1K | — | 4 |