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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. | 217.9M | 23,731 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,300 |
| 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.
32,144 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,838 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,313 |
| — |
| — |
| 0 |
| AS402454US | HOSTBOOTH - HostBooth | — | — | 0 |
| AS207393US | AS_Clayton Clayton Donley | — | 2 | 2 |
| AS62481US | TRUIST-ASN-62481 - Truist Financial Corporation | — | — | 0 |
| AS26169US | QTD - QTD Systems | — | — | 0 |
| AS16961US | HIPCS-DALLAS-SERVER-OFFICE - AT&T Enterprises, LLC | — | — | 0 |
| AS14854US | AOL-MTC2 - Yahoo Holdings Inc. | — | — | 0 |
| AS16644US | ZANG-01 - Zangmeister cancer Center | — | — | 0 |
| AS16553US | EQUINIX-EC-MI - Equinix, Inc. | — | — | 0 |
| AS15152US | MODIVCARE-ASN1 - Modivcare Inc. | — | — | 0 |
| AS16474US | RESPONSYS-1 - Responsys Inc. | — | — | 0 |
| AS27094US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27084US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS26850US | ENPROINDUSTRIES - EnPro Industries, Inc. | — | — | 0 |
| AS14913US | MEDIA-NEWS-GROUP - MEDIA NEWS GROUP | — | — | 0 |
| AS13665US | VRIS-AS-BLOCK - Verizon Business | — | — | 0 |
| AS26099US | IAS-1 - Institute for Advanced Study | — | — | 0 |
| AS30042US | ARIN-US-ASN-2 - Boerboel LLC | — | — | 0 |
| AS25828US | STATE-OF-IDAHO - State of Idaho | — | — | 0 |
| AS29808US | DCS-CLOUD-01 - deadCenter Solutions LLC | — | — | 0 |
| AS29760US | UNITI-M2 - Uniti Fiber Holdings Inc. | — | — | 0 |
| AS27452US | ICI-SJ - Incomm | — | — | 0 |
| AS18514US | MDCH-CRP-ASN - M.D.C. Holdings, Inc. | — | — | 0 |
| AS22112US | TAYLOR-MNKT02 - Taylor Corporation | — | — | 0 |
| AS22074US | CAL-NYC-ASN - Calamos Advisors LLC | — | — | 0 |
| AS21596US | AHCA - AHCA | — | — | 0 |
| AS19829US | SMILEBRANDS-PRIMARY - Smile Brands Group Inc | — | — | 0 |
| AS395239US | SWAG-FIBER - SWAG Fiber, LLC | — | — | 0 |
| AS394943US | MAXWELL-TECHNOLOGIES - Tesla Motors, Inc. | — | — | 0 |
| AS395125US | BGCA1275 - Boys & Girls Clubs of America | — | — | 0 |
| AS18990US | AIRBAND-DALLAS - Airband Communications, Inc | — | — | 0 |
| AS18963US | MIDLAND-ISD-TX-01 - MIDLAND ISD | — | — | 0 |
| AS18714US | RSNAK-01 - Rock Solid Networks of Alaska LLC | — | — | 0 |
| AS394639US | GOOGLE - Google LLC | — | — | 0 |
| AS19981US | AS-WFC-LHC-AZ-01 - WireFree Communications Inc. | — | — | 0 |
| AS19976US | REALPAGE-STARFIRE - Real Page, Inc. | — | — | 0 |
| AS19762US | PHYSGUN - Physgun LLC | — | — | 0 |
| AS105US | MOT-MCD-AS - Gould Computer Systems Division | — | 128 | 2 |
| AS19491US | SBCASI-AKRON-OH-COVLIL - Wireless Maritime Services, LLC | — | — | 0 |
| AS19487US | SBCASI-AKRON-OH-COVLIL - Wireless Maritime Services, LLC | — | — | 0 |
| AS19300US | KUBRA-USA - Kubra | — | — | 0 |
| AS19549US | SERVERSILO - HostPapa | — | — | 0 |
| AS14648US | COUNTY-OF-BUTTE-CA - COUNTY OF BUTTE | — | — | 0 |
| AS14468US | RIDER-UNIVERSITY - Rider University | — | — | 0 |
| AS17041US | AS-LRCOMM-ORIG - L.R. Communications, Inc. | — | — | 0 |
| AS14342US | ITCM-UCIN - Allstream Business US, LLC | — | — | 0 |
| AS13689US | BLUELINX-CORP - BlueLinx Corporation | — | — | 0 |