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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. | 218.2M | 25,766 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,308 |
| 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.
32,243 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 | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| 512 |
| — |
| 2 |
| AS46587US | 2991400 - Cerberus Capital Management LP | 512 | — | 2 |
| AS63468US | INFINITTNA - Infinitt North America, Inc. | 512 | — | 2 |
| AS36232US | NEXTGI - Nextgi, LLC. | 512 | 1 | 3 |
| AS401262US | TREDYFFRIN-EASTTOWN-SD - Tredyffrin/Easttown School District | 512 | — | 2 |
| AS394730US | LEADFUSION - Leadfusion, Inc. | 512 | — | 1 |
| AS23209US | VHDA20011260123220 - Virginia Housing Development Authority | 512 | — | 2 |
| AS397868US | WHITEHAT-US-PROD-2 - Synopsys Inc. | 512 | — | 2 |
| AS22676US | CITY-OF-COVINGTON-GA - City Of Covington, Georgia | 512 | — | 1 |
| AS398919US | HCBOCC-AS - Hillsborough County Board of Commissioners | 512 | — | 2 |
| AS218751US | Fontaine Fontaine, LLC | 512 | — | 2 |
| AS7215US | AHNET-AS - Ntirety, Inc. | 512 | 2 | 4 |
| AS11035US | KCPA1 - The Raymond F. Kravis Center for the Performing Arts, Inc. | 512 | — | 1 |
| AS396254US | ALARIS-1 - Kodak Alaris | 512 | — | 2 |
| AS19663US | CASS-STL - CASS INFORMATION SYSTEMS | 512 | — | 2 |
| AS46140US | CSI - CAMP SYSTEMS INTERNATIONAL | 512 | — | 2 |
| AS401598US | PANCHAL-ASN-01 - Panchal LLC | 512 | 256 | 3 |
| AS152879US | PHOENIXNAP-AS-TPE0 - PhoenixNAP LLC | 512 | 257 | 4 |
| AS401366US | VOX-FLOW - Vox Flow LLC | 512 | 1 | 3 |
| AS12184US | FORRESTER-RESEARCH - Forrester Research | 512 | — | 2 |
| AS27502US | CHOWCHILLADIST - Madera County Office of Education | 512 | — | 2 |
| AS29750US | ALASKA-AIRGROUP-IGQ - Alaska Airlines, Inc. | 512 | — | 2 |
| AS210031US | wavely AXON Networks Inc. | 512 | — | 2 |
| AS393488US | CVR-ENERGY - CVR Services, LLC | 512 | — | 1 |
| AS14012US | PNMAC1 - Private National Mortgage Acceptance Company LLC | 512 | — | 2 |
| AS203990US | acc_eu Accertify LLC | 512 | — | 2 |
| AS30474US | IMPRIVATA-DC - Imprivata Inc | 512 | — | 2 |
| AS399717US | NU - Newman University, Inc. | 512 | — | 2 |
| AS395980US | COMCAST-MES - Comcast Cable Communications, LLC | 512 | — | 2 |
| AS930US | CITY-OF-CELINA - CITY OF CELINA | 512 | — | 2 |
| AS33159US | NSPNET1 - Nature's Sunshine Products, Inc. | 512 | — | 1 |
| AS11020US | ANSI - RUSTIC RESOURCES, LLC | 512 | 16 | 3 |
| AS54244US | ICS - ICSolutions | 512 | — | 2 |
| AS17189US | MITSUBISHI-UFJ-TRUST-BANKING - Mitsubishi UFJ Trust & Banking Corporation | 512 | — | 2 |
| AS36095US | FSBANK-1-36095 - FIRST SECURITY BANK | 512 | — | 2 |
| AS395397US | AMENTUM-ASN - Amentum Services, Inc. | 512 | — | 1 |
| AS63310US | AS-NABP - NABP | 512 | — | 1 |
| AS400705US | JMRH-NET - Highland Networks, LLC | 512 | — | 1 |
| AS30423US | AMEDI-3-ASN1 - Amedisys, Inc. | 512 | — | 2 |
| AS53381US | WAGWEB - Wagner-Weber Associates, Inc. | 512 | — | 2 |
| AS54542US | K-DATA01 - K-Data Systems, LLC | 512 | — | 1 |
| AS39971US | BELL-IT-SERVICES - Bell IT Services, Inc. | 512 | 1 | 3 |
| AS197684US | ASHOSTUA DeRoy LLC. | 512 | — | 1 |
| AS397037US | CITY-OF-AMARILLO - City of Amarillo | 512 | — | 2 |
| AS398070US | MESQUITEISD-AS - Mesquite Independent School District | 512 | — | 2 |
| AS396534US | DEEPSYS - Deep Systems LLC | 512 | — | 2 |
| AS12205US | SCSD - Sachem Central School District | 512 | — | 2 |