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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 | 23,961 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,299 |
| 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.
32,159 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,341 |
| — |
| — |
| 0 |
| AS19883US | BUEHNER-FRY - Navis | — | — | 0 |
| AS19898US | FIBERLINK - IBM | — | — | 0 |
| AS19921US | ACCESSPENNSYLVANIA - Health Sciences Libraries Consortium | — | — | 0 |
| AS19937US | MENLO-EDU - Menlo College | — | — | 0 |
| AS19975US | CASCADELINK - Wave Broadband | — | — | 0 |
| AS19979US | SIPSTORM-1 - SipStorm, Inc. | — | — | 0 |
| AS20065US | HOWARD-LEADMON - PBW Communications, LLC | — | — | 0 |
| AS20102US | A-LA-MODE - a la mode, inc. | — | — | 0 |
| AS20110US | NTT - NTT America, Inc. | — | — | 0 |
| AS20120US | CITY-ATT-FPL-MULTI - CITY FURNITURE, INC. | — | — | 0 |
| AS20169US | TUSIX-ASN - Tucson Internet Exchange | — | — | 0 |
| AS20211US | AS20211 - MITTERA GROUP, INC | — | — | 0 |
| AS20241US | TAEC - Toshiba America Electronic Components, Inc | — | — | 0 |
| AS20281US | NEXTLEVEL-LV - NEXT LEVEL INTERNET, INC. | — | — | 0 |
| AS20342US | GATEH-4-ASN - Gatehouse Management Inc. | — | — | 0 |
| AS20354US | WESTNET - WestNet Nevada, LLC | — | — | 0 |
| AS20399US | ASN-NET - Antelecom, Inc. | — | — | 0 |
| AS20455US | NRTC-ORG - NRTC | — | — | 0 |
| AS21343US | ALLIED Internet Invest, Ltd. | — | — | 0 |
| AS21628US | TWRS-SEA - Towerstream I, Inc. | — | — | 0 |
| AS21747US | WINDSTREAM - Windstream Communications LLC | — | — | 0 |
| AS21760US | XEROX-OPB - Xerox, Inc., Office Printing Business | — | — | 0 |
| AS21770US | SIMPLE2CALL - Simple2Call | — | — | 0 |
| AS21781US | DALTONSCHOOL - The Dalton School | — | — | 0 |
| AS21831US | ZITO-MIDWEST - Zito Media | — | — | 0 |
| AS21836US | LCHS-ER - Legacy Community Health Services | — | — | 0 |
| AS21870US | JUNIPER-HERNDON - Juniper Networks, Inc. | — | — | 0 |
| AS21871US | IPGMO - THE INTERPUBLIC GROUP OF COMPANIES, INC. | — | — | 0 |
| AS21929US | FEMA - Federal Emergency Management Agency | — | — | 0 |
| AS22008US | AFFINITYSOLUTIONS - Affinity Solutions, Inc. | — | — | 0 |
| AS22016US | PHS-PGC - Providence Health & Services | — | — | 0 |
| AS22031US | SCHNITZER-PROPERTIES - Harsch Investment Properties | — | — | 0 |
| AS22061US | CLOUDFLARE-MTC-CA - Cloudflare, | — | — | 0 |
| AS22070US | TF-BRI - Blue Ridge Websoft, LLC | — | — | 0 |
| AS22078US | CONDISTALABS-AS-01 - CONDISTA Labs LLC | — | — | 0 |
| AS22141US | JMARK-BUSINESS-SOLUTIONS - JMARK Business Solutions, Inc | — | — | 0 |
| AS22152US | OCHS - VTX Telecom | — | — | 0 |
| AS22211US | INTERNAP-FCP - Internap Holding LLC | — | — | 0 |
| AS22285US | PARASOFT - ParaSoft Corporation | — | — | 0 |
| AS22325US | COLOCENTRAL - Colo Network | — | — | 0 |
| AS22331US | DIRECTNETWORKS - DirectNetworks, Inc. | — | — | 0 |
| AS22397US | COASTALSIERRA - Skyline Broadband Service | — | — | 0 |
| AS22398US | NT-T - COZAD TELEPHONE COMPANY | — | — | 0 |
| AS22410US | FIS-CLIENT-CLOUD-GATEWAY - Fidelity National Information Services, Inc. | — | — | 0 |
| AS22595US | ASN1 - Technology Service Corp | — | — | 0 |
| AS22797US | TEASEA - THE ENERGY AUTHORITY | — | — | 0 |