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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,525 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,309 |
| 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.
32,245 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,000 |
| AS701US | UUNET - Verizon Business | 43.6M | 991 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 768 |
| — |
| 2 |
| AS54319US | ARXSYSTEMS-ASN01 - Arxsystems.Io LLC | 768 | 4.1K | 3 |
| AS40851US | TEMPWORKS - TEMPWORKS SOFTWARE INC. | 768 | — | 3 |
| AS394993US | SCVTA - Santa Clara Valley Transportation Authority | 768 | — | 3 |
| AS395580US | CENTRAL-BLK - Central College | 768 | 258 | 6 |
| AS14541US | GE-AIRCRAFT-ENGINES - GE AIRCRAFT ENGINES | 768 | — | 3 |
| AS54645US | HANMI-INTERNET - HANMI BANK | 768 | — | 3 |
| AS14121US | CIBC-WORLD-MARKETS - CIBC World Markets | 768 | — | 3 |
| AS16711US | EHI-NA-AS-2 - Enterprise Holdings, Inc. | 768 | 2 | 5 |
| AS32291US | ANNEARUNDELMEDICALCENTER - ANNE ARUNDEL MEDICAL CENTER | 768 | — | 3 |
| AS25786US | NE-WEST-11 - Newegg.com | 768 | — | 3 |
| AS11117US | NUYEK - Nuyek, LLC | 768 | 4.1K | 4 |
| AS40062US | ASCENDLEARNING - Ascend Learning, LLC | 768 | — | 2 |
| AS32297US | TEPASN - Tucson Electric Power | 768 | — | 3 |
| AS394234US | AS-IRSC - Indian River State College | 768 | — | 3 |
| AS32467US | SAKS-HBC-AS - SFA Holdings Inc. | 768 | — | 3 |
| AS30594US | FREESTONE-GROVE - Freestone Grove Partners | 768 | — | 3 |
| AS30606US | BHSF - Baptist Health South Florida, Inc. | 768 | — | 3 |
| AS11394US | CITYOFRICHARDSON-AS - City of Richardson | 768 | — | 3 |
| AS19319US | CCN-DMZ - Bonneville Power Administration | 768 | — | 3 |
| AS29716US | ASNOTS - Otsuka America Pharmaceutical, Inc. | 768 | — | 3 |
| AS12287US | AS-AFILIAS-CTRL1 - Afilias, Inc. | 768 | 1 | 4 |
| AS23047US | MCKINSEY-US - Mckinsey & Company | 768 | — | 3 |
| AS27477US | POLAR-PUBLIC-HUB-POP-ASN - IBM | 768 | — | 3 |
| AS215740US | NETULU-EU Netulu Incorporated | 768 | 524.3K | 4 |
| AS397941US | TMHCC-PUBLIC-ASN-01 - HCC Service Company INC | 768 | — | 2 |
| AS22841US | NCCNORTHAMPTON - Northampton Community College | 768 | — | 3 |
| AS54838US | NWINC-01 - Networks Inc | 768 | — | 3 |
| AS10563US | ROCHELLEUTILITIES - Rochelle Municipal Utilities | 768 | — | 3 |
| AS395788US | KELLOGGCO - Kellogg Company | 768 | — | 3 |
| AS14779US | YAHOO - Yahoo Holdings Inc. | 768 | 1 | 4 |
| AS26447US | SHUTTERFLY - Shutterfly, LLC | 768 | — | 3 |
| AS53713US | NATIONAL-CEMENT - National Cement Company | 768 | — | 3 |
| AS27575US | PROVAK - Providence Hospital | 768 | — | 3 |
| AS53302US | BALTIMORECOUNTYGOVERNMENT - Baltimore County Government | 768 | — | 3 |
| AS393847US | AAMC-AS1 - Association of American Medical Colleges | 768 | — | 3 |
| AS54192US | MONTEBELLO-USD - Montebello Unified School District | 768 | — | 2 |
| AS400183US | RELIANCE-STEEL-AND-ALUMINUM-01 - Reliance Steel and Aluminum Co. | 768 | — | 3 |
| AS13606US | LEANDERTX-AS1 - City of Leander, Texas | 768 | — | 3 |
| AS13344US | NETEX-INC - NetEx Inc. | 768 | — | 3 |
| AS53451US | NETX-INTERNET - NetX Internet, LLC. | 768 | — | 3 |
| AS40226US | GLOBALFCU - Global Credit Union | 768 | — | 3 |
| AS393368US | NYAKI - Nyaki Technologies, LLC | 768 | 1 | 4 |
| AS36364US | MHSNET - Mary Washington Hospital, Inc. | 768 | — | 3 |
| AS30532US | 3310-617INTERNET - Healthcare Realty Trust, Inc. | 768 | — | 3 |
| AS18929US | AAMVA - THE AMERICAN ASSOCIATION OF MOTOR VEHICLE ADMINISTRATORS | 768 | — | 3 |
| AS401993US | PROVOCATIVE - Provocative Science Holdings, Inc. | 768 | — | 3 |