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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) | 227.7M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,661 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,490 |
| 3.1K |
| — |
| 5 |
| AS63344US | DKM2-ARIN - The Reynolds and Reynolds Company | 3.1K | — | 11 |
| AS54084US | REGION14ESC - REGION 14 EDUCATION SERVICE CENTER | 3.1K | — | 2 |
| AS36283US | AS-RIVERWAVE - Riverwave LLC | 3.1K | 69.6K | 8 |
| AS22906US | TWAI - FRIT | 3.1K | 2 | 10 |
| AS157US | HPE-15 - HEWLETT PACKARD ENTERPRISE COMPANY | 3.1K | — | 2 |
| AS399777US | MCCNO - NEW ORLEANS PUBLIC FACILITY MANAGEMENT, INC. | 3.1K | — | 2 |
| AS40342US | EARLYWARNINGSERVICES - Early Warning Services | 3.1K | — | 9 |
| AS40154US | VRC-AS - Virtual Radiologic Corporation | 3.1K | — | 12 |
| AS401353US | BOOSTRUN - Boost Run LLC | 3.1K | — | 9 |
| AS54374US | WMTA - WMTel | 3.1K | — | 12 |
| AS395446US | BRIGGS-STRATTON - Briggs & Stratton Corporation | 3.1K | — | 5 |
| AS393951US | HORTONS-TV - Hortons TV & Electronics Inc | 3.1K | — | 6 |
| AS29886US | ESVBA-ASN1 - Eastern Shore of Virginia Broadband Authority | 3.1K | 65.5K | 5 |
| AS54302US | UNA-IP-ASN-01 - University of North Alabama | 3.1K | — | 5 |
| AS1965US | VISTRAENERGY-1965 - Vistra Corporate Services Company | 3.1K | — | 12 |
| AS399361US | ALCOA-CORP - Alcoa USA Corp. | 3.1K | — | 8 |
| AS36114US | VERSAWEB-ASN - VegasNAP, LLC | 3.1K | 256 | 5 |
| AS40631US | MASTEC-PRIVATE - Mastec, Inc | 3.1K | — | 7 |
| AS18938US | PRESSGANEY - PRESS GANEY ASSOCIATES INC | 3.1K | — | 8 |
| AS398173US | SEAGATE-USA-CA-2 - Seagate Technology LLC | 3.1K | — | 12 |
| AS27373US | DOUGLAS-COUNTY-COMMUNITY-NETWORK - Douglas County PUD | 3.1K | 256 | 8 |
| AS13713US | ARCOT - Avago Technologies U.S. Inc. | 3.1K | — | 12 |
| AS397298US | PEOPLES-TELECOM-LLC - Peoples Telecommunications LLC | 3.1K | — | 11 |
| AS32217US | GPIEX - GPIEX INC | 3.1K | 65.5K | 6 |
| AS32372US | PRA-AS - PORTFOLIO RECOVERY ASSOCIATES | 3.1K | — | 10 |
| AS46925US | PAVLOVMEDIA-SE - PAVLOV MEDIA INC | 3.1K | 256 | 12 |
| AS1411US | CHRISTOPHER-NEWPORT-UNIVERSITY - Christopher Newport University | 3.1K | — | 9 |
| AS26962US | IPROT - IPROT, Inc. | 3.1K | — | 12 |
| AS26527US | LIGHTWAVE-NETWORKS - LightWave Networks | 3.1K | 2 | 14 |
| AS26423US | DOMRES - Dominion Virginia Power | 3.1K | — | 5 |
| AS21993US | SCHLAGE-AS - Schlage Lock Company LLC | 3.1K | — | 9 |
| AS12001US | AS-PNN-NET - Point North Networks, Inc. | 3.1K | — | 12 |
| AS394925US | OPTIMERANETWORKS - OptimERA xG | 3.1K | — | 2 |
| AS14222US | NFCU-AS - Navy Federal Credit Union | 3.1K | — | 12 |
| AS16887US | AETHERNETSANANTONIO - Aethernet LLC | 3.1K | — | 12 |
| AS55142US | NEWBREAK-COMMUNICATIONS-VICKSBURG - Newbreak Management Co. LLC | 3.1K | — | 2 |
| AS401478US | WABASH-MUTUAL-TELEPHONE - Wabash Mutual Telephone Company | 3.1K | 65.5K | 4 |
| AS395532US | 1P-WSS - Web Site Source | 3.1K | — | 11 |
| AS53823US | SMTA - Scio Mutual Telephone Association | 3.1K | — | 2 |
| AS1432US | AC-AS-1 - Albion College | 3.1K | — | 2 |
| AS14088US | WIU7 - Westmoreland Intermediate Unit | 3.1K | — | 2 |
| AS63222US | CARNIVALCORP-ASN1 - Carnival Corporation | 3.1K | — | 5 |
| AS401174US | CA-CDT-MMBI-01 - State of California, Department of Technology | 3.1K | 65.5K | 5 |
| AS17116US | BHPHOTO - B & H Foto & Electronics Corp. | 3.1K | 1 | 9 |
| AS395505US | IMANAGE - iManage, LLC | 3.1K | — | 11 |
| AS17015US | WSCU - Western Colorado University | 3.1K | — | 5 |