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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 | 21,162 |
| 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 | 1,950 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,372 |
| 256 |
| 1 |
| 2 |
| AS33192US | NAIB - National Aquarium in Baltimore | 256 | — | 1 |
| AS400473US | AS-JENCO - Jenco Wireless, LLC | 256 | — | 1 |
| AS46447US | ASN1 - North American Derivatives Exchange, Inc. | 256 | — | 1 |
| AS7921US | ADTRAV - Adtrav Corporation | 256 | — | 1 |
| AS400321US | ARC-NET - Arcosa, Inc. | 256 | — | 1 |
| AS36634US | GREATRIVERHEALTHSYSTEMS - Great River Health Systems, Inc. | 256 | — | 1 |
| AS13697US | SHG-AS - Saber Healthcare Group LLC | 256 | — | 1 |
| AS53747US | WSSD-1-ASN - Wall Street Systems Delaware, Inc | 256 | — | 1 |
| AS23245US | EADS-NORTH-AMERICA--AS01 - Airbus Defense and Space, Inc. | 256 | — | 1 |
| AS394143US | LTX-DC - C.O.P.S. Monitoring | 256 | — | 1 |
| AS46161US | NEUNER - Neuner Mobile Technologies LLC | 256 | 1 | 2 |
| AS46908US | COMVOZ-US - Comvoz Communication LLC | 256 | — | 1 |
| AS393369US | RTVISION-ASN1 - RtVision, Inc. | 256 | — | 1 |
| AS27154US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 256 | — | 1 |
| AS27514US | KCML - Kingdon Capital Management, LLC | 256 | — | 1 |
| AS15132US | LA-INET - City National Bank | 256 | — | 1 |
| AS402158US | CYBERFOREST-LLC - CyberForest | 256 | — | 1 |
| AS399464US | MICROSULA - Microsula, Inc. | 256 | — | 1 |
| AS46765US | ASN1 - Liberum Capital Inc. | 256 | — | 1 |
| AS401822US | ROCKFORD-CITY-01 - City of Rockford | 256 | — | 1 |
| AS395346US | BCI-AS-1 - Bonneville County Idaho | 256 | — | 1 |
| AS26064US | COFKM - City of Kings Mountain | 256 | — | 1 |
| AS395507US | RCH350 - Redlands Community Hospital | 256 | — | 1 |
| AS400711US | SUTTON-BANK-01 - Sutton Bank | 256 | — | 1 |
| AS399026US | BEC-PRIMARYASN - Bowen Engineering Corporation | 256 | — | 1 |
| AS394444US | ASNJEFFXDC01 - Jefferson Radiology, P.C. | 256 | — | 1 |
| AS33710US | CNLR-ASN - National Retail Properties, Inc. | 256 | — | 1 |
| AS46134US | AAA-MWG-UT - AAA-Arizona, Inc. | 256 | — | 1 |
| AS33290US | USSC-ASN-4-2020 - United States Sugar Corporation | 256 | — | 1 |
| AS10919US | TROYFP - Troy Corporation | 256 | — | 1 |
| AS25725US | EINK - E INK CORPORATION | 256 | — | 1 |
| AS33466US | FLVS-AS - Florida Virtual School | 256 | — | 1 |
| AS400860US | AS-NEXUSHOSTING - Nexuscore Hosting | 256 | — | 1 |
| AS18999US | SAINTANDREWS-1 - SAINT ANDREW'S SCHOOL OF BOCA RATON, INC. | 256 | — | 1 |
| AS40367US | HRH-GHCH - Harbor Regional Health Community Hospital | 256 | — | 1 |
| AS395319US | AS-RIVERBAYCORP - Riverbay Corporation | 256 | — | 1 |
| AS1859US | DISN-PILOTNET5 - RTX BBN Technologies, Inc. | 256 | — | 1 |
| AS394465US | SUSSEXDE-GOV - Sussex County Government | 256 | — | 1 |
| AS401220US | EDGE-CITY - Edgecity 1343 LLC | 256 | — | 1 |
| AS11407US | CPSD6 - Central Point School District 6 | 256 | — | 1 |
| AS400851US | SEPHORA-US-SF - Sephora USA Inc. | 256 | — | 1 |
| AS400047US | APOG-SRU - Apogee Telecom Inc. | 256 | — | 1 |
| AS401155US | WIGELSWORTH - Wigelsworth Consulting Corp | 256 | 1 | 2 |
| AS16835US | CENTURYLINK-LEGACY-MR-MEBLANE-AND-RCMT - CenturyLink Communications, LLC | 256 | — | 1 |
| AS21670US | BPC-CERMAK - Berlin Packaging, LLC | 256 | — | 1 |
| AS398937US | FIBERCREEK - Fibercreek Networks, LLC | 256 | — | 1 |