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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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 | 24,543 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,304 |
| 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.
32,174 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 | 3,884 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,999 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,345 |
| 256 |
| 1 |
| 2 |
| AS54273US | PADSUN - The Paducah Sun | 256 | — | 1 |
| AS206142US | InternetTV Internet TV, Inc. | 256 | — | 1 |
| AS40673US | SHELTERCUSTOMER - Shelter Mutual Insurance | 256 | — | 1 |
| AS401785US | DATA -SAFE-SERVICES - Data Safe Services LLC | 256 | — | 1 |
| AS399311US | FRONTIER-CORP - Frontier Networks Corp | 256 | — | 1 |
| AS402220US | KIRKLAND-ELLIS-NV - Kirkland & Ellis LLP | 256 | — | 1 |
| AS397837US | GEICO-CNAB - GEICO | 256 | — | 1 |
| AS401830US | KEYSTONE-COLLECTIONS-GROUP-01 - Keystone Collections Group | 256 | — | 1 |
| AS399204US | PST - White Iron LLC | 256 | 4.1K | 2 |
| AS393690US | AS-MARITIME - Massachusetts Maritime Academy | 256 | — | 1 |
| AS29961US | MADISON-COUNTY-COMMISSION-AL - Madison County Commission | 256 | — | 1 |
| AS53678US | OFFICERING-ASH - OFFICERING LLC | 256 | — | 1 |
| AS33712US | APOG-DOWNSTATE - Apogee Telecom Inc. | 256 | — | 1 |
| AS30601US | LOBEL-FINANCIAL-CORPORATION - Lobel Financial Corporation | 256 | — | 1 |
| AS13583US | AIP-AS13583 - Allstate Identity Protection | 256 | — | 1 |
| AS40590US | AS40590 - CISCO SYSTEMS, INC. | 256 | — | 1 |
| AS46425US | SVMH-AS - Salinas Valley Memorial Hospital | 256 | — | 1 |
| AS397626US | CONTINENTAL-RESOURCES-INC - Continental Resources, Inc. | 256 | — | 1 |
| AS56521US | KANDYKSF Skyvera LLC | 256 | — | 1 |
| AS396015US | CRESTLINE-NETWORKS - Crestline Networks | 256 | 18 | 4 |
| AS393961US | FBB-INTERNET-ID - Farm Bureau Bank | 256 | — | 1 |
| AS399406US | AS-BILL360 - Bill360, Inc. | 256 | — | 1 |
| AS396953US | GRUNDY-IP-TRANSPORT - Grundy IP Transport Inc. | 256 | — | 1 |
| AS394428US | CONNECTURE-156 - Connecture, Inc. | 256 | — | 1 |
| AS29937US | BR-01 - Boone REMC | 256 | — | 1 |
| AS11936US | MARATHON-CHEESE - Marathon Cheese Corporation | 256 | — | 1 |
| AS36347US | KYN-GTS-CBO-BOGOTA-CO - Kyndryl | 256 | — | 1 |
| AS12279US | LAYER-EIGHT - VertitechIT, Inc. | 256 | — | 1 |
| AS54410US | BDHS-AS - Bozeman Deaconess Health Services | 256 | — | 1 |
| AS400466US | CCAP - County Commissioners Association of Pennsylvania | 256 | — | 1 |
| AS398903US | NETOPS-01 - Double K Technologies, LLC | 256 | — | 1 |
| AS397486US | COMMERCECITY-NET - City of Commerce City | 256 | — | 1 |
| AS54181US | SJH-BANGOR-AS1 - ST JOSEPH HOSPITAL | 256 | — | 1 |
| AS399823US | GGSL - GOIP GLOBALNET SOLUTIONS LLC | 256 | — | 1 |
| AS62851US | ESOLUTIONS - eDot, LLC | 256 | — | 1 |
| AS46181US | MAXXSOUTH-BROADBAND - BCI Mississippi Broadband,LLC | 256 | — | 1 |
| AS18951US | 400-CAPITAL-MANAGEMENT - 400 Capital Management LLC | 256 | — | 1 |
| AS402378US | HCHB-PUBLIC - HomeCare | 256 | — | 1 |
| AS397980US | NACSPACE - NacSpace LLC | 256 | — | 1 |
| AS29839US | AS-AFILIAS-MEL1 - Afilias, Inc. | 256 | — | 1 |
| AS62720US | IRONTONTELEPHONECO - Ironton Telephone Company | 256 | — | 1 |
| AS31854US | SAFETY-NATIONAL-CASUALTY-CORPORATION - Safety National Casualty Corporation | 256 | — | 1 |
| AS29776US | LRRANET - Lubbock Reese Redevelopment Authority | 256 | — | 1 |
| AS3728US | ONR-ASN - LightEdge Solutions | 256 | — | 1 |
| AS21630US | SHV1 - Sports South, L.L.C. | 256 | 1 | 2 |
| AS393541US | ESS-CORP - EXTRA SPACE STORAGE | 256 | — | 1 |