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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. | 218M | 24,632 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,307 |
| 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.
32,210 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| 256 |
| — |
| 1 |
| AS397815US | NMIH-SWITCH-01 - National Mortgage Insurance Corporation | 256 | — | 1 |
| AS36325US | OCNL-AS36325 - Operations & Compliance Network LLC | 256 | — | 1 |
| AS397919US | NETSPI-CORPORATE - NetSPI | 256 | 16 | 2 |
| AS19095US | GMS-AS - Gilsanz Murray Steficek LLP | 256 | — | 1 |
| AS394555US | APPLIED-SYSTEMS-LAB - APPLIED SYSTEMS, INC | 256 | — | 1 |
| AS50142US | BigBox BigBox Softwares LLC | 256 | 2 | 3 |
| AS402531US | SMC-915 - UNIVERSAL | 256 | — | 1 |
| AS31793US | HOTWI-PRIMECAST - Hotwire Communications | 256 | — | 1 |
| AS402272US | CORSTL - Collector of Revenue | 256 | — | 1 |
| AS197384US | MN-Consult MN CONSULTANCY AND MANAGEMENT LLC | 256 | — | 1 |
| AS400712US | MAXIM-HOMECARE - Maxim Healthcare Services, Inc. | 256 | — | 1 |
| AS400685US | NAPER-AS-01 - City of Naperville | 256 | — | 1 |
| AS63418US | MAN-INVESTMENTS-US - Man Investments Holdings, Inc | 256 | — | 1 |
| AS30364US | TANMA - TanMar Communications, LLC | 256 | — | 1 |
| AS54998US | SJCHS-SAV-GA - St. Josephs/Candler Health System, Inc. | 256 | — | 1 |
| AS18619US | NUSOCLOUD-MO - NUSO | 256 | — | 1 |
| AS135424US | EAAPPL-AS-AP - Electronic Arts Inc. for KR | 256 | — | 1 |
| AS21635US | WWCUSA - World Wide Communications USA Inc. | 256 | — | 1 |
| AS53599US | KENOSHA-COUNTY-WI - Kenosha County | 256 | — | 1 |
| AS395308US | ALPINE-INTERNET - Alpine Internet | 256 | 4.1K | 2 |
| AS395210US | WESTERNCARRIERS-CA - Western Carriers Inc. | 256 | — | 1 |
| AS54513US | ERHC - EL RIO HEALTH CENTER | 256 | — | 1 |
| AS29718US | TNEMEC-AS - Tnemec Company Incorporated | 256 | — | 1 |
| AS26631US | GUNN-VAL-HOSP - Gunnison Valley Hospital | 256 | — | 1 |
| AS400920US | GRABIEN - Grabien Inc. | 256 | — | 1 |
| AS399661US | INJ-LLC - INJ LLC | 256 | — | 1 |
| AS62736US | LANDMARK-COLLEGE - Landmark College, Inc | 256 | — | 1 |
| AS19336US | BLAIN-SUPPLY-PRIMARY - BLAIN SUPPLY, INC | 256 | — | 1 |
| AS400861US | 0X7C0 - 0x7c0 Labs LLC | 256 | 2 | 3 |
| AS30668US | MADISONCOUNTYNY-01 - Madison County New York | 256 | — | 1 |
| AS14147US | BFSFCU-ASN - Bank-Fund Staff Federal Credit Union | 256 | — | 1 |
| AS401751US | FMH-NET - Farmers Mutual Hail Insurance Company of Iowa | 256 | — | 1 |
| AS35944US | MEYER-SOUND - Meyer Sound | 256 | — | 1 |
| AS401760US | NETKIND - Netkind LLC | 256 | 1 | 2 |
| AS401867US | HOME-SHOP - HOME SHOP | 256 | — | 1 |
| AS394626US | KUSI-SUBTAC001 - Kentucky Underground Storage, Inc. | 256 | 1 | 2 |
| AS399536US | PROGRESSBIZ-BGP - Progress Business Systems, Inc. | 256 | — | 1 |
| AS18458US | NYBG - The New York Botanical Garden | 256 | — | 1 |
| AS394132US | CASCADEMICROTECH - Cascade Microtech, Inc. | 256 | — | 1 |
| AS6531US | COFFEYCAN - Burlington USD #244 | 256 | — | 1 |
| AS32445US | XHOP - XHOP LLC | 256 | — | 1 |
| AS33589US | CITYOFSOUTHLAKE - City of Southlake | 256 | — | 1 |
| AS47082US | BSKB-FC-AS - Birch, Stewart, Kolasch & Birch, LLP | 256 | — | 1 |
| AS54516US | T3TRADING - T3 Trading Group LLC | 256 | — | 1 |
| AS395299US | SANJOSE-COSTARICA-01 - THE WESTERN UNION COMPANY | 256 | — | 1 |
| AS5US | SYMBOLICS - WFA Group LLC | 256 | — | 1 |