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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 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 | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| SWA-MKT-INET-2 - Southwest Airlines Co. |
| 256 |
| — |
| 1 |
| AS393375US | BT-USMPL-MULTIHOME - Bio-Techne Corporation | 256 | — | 1 |
| AS7921US | ADTRAV - Adtrav Corporation | 256 | — | 1 |
| AS396415US | COMCAST-MES - Comcast Cable Communications, LLC | 256 | — | 1 |
| AS398136US | GOAA-NET-1 - Greater Orlando Aviation Authority | 256 | — | 1 |
| AS33615US | EVHC - Envision Healthcare Holdings, Inc | 256 | — | 1 |
| AS398725US | NUSOCLOUD-NV - NUSO | 256 | — | 1 |
| AS40522US | SIMPLE1 - Simple Signal, Inc. | 256 | — | 1 |
| AS398469US | FOXTHERMAL-ASN - Fox Thermal Instruments Inc | 256 | — | 1 |
| AS14289US | CBTKS-AS - COREFIRST BANK & TRUST | 256 | — | 1 |
| AS396019US | COMCAST-MES - Comcast Cable Communications, LLC | 256 | 1 | 2 |
| AS395117US | LIMS - LabVantage Solutions, Inc | 256 | — | 1 |
| AS396844US | WRRE-1 - William Raveis Real Estate, Incorporated. | 256 | — | 1 |
| AS401557US | LF73 - Plentek, LLC | 256 | 1 | 2 |
| AS400973US | AIK-159 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS396117US | OCFA-IRV - Orange County Fire Authority | 256 | — | 1 |
| AS30384US | GM-AS NUMBER - Guild Mortgage Company LLC | 256 | — | 1 |
| AS22209US | RUDYS-AS - RUDYS INFLIGHT CATERING | 256 | — | 1 |
| AS22524US | SSH-SPBG - Spartanburg Steel Holdings, Inc | 256 | — | 1 |
| AS19794US | CEMENTWORKS - The Cementworks LLC | 256 | — | 1 |
| AS62572US | TTD-LA - The Technology Depot, Inc. | 256 | — | 1 |
| AS398752US | OUR-SUNDAY-VISITOR - Our Sunday Visitor | 256 | — | 1 |
| AS400982US | FAMILYCARENETWORK-1 - Family Care Network PLLC | 256 | — | 1 |
| AS396096US | GP1 - Green Plains Inc. | 256 | — | 1 |
| AS396230US | 411-SAW - Lasco | 256 | — | 1 |
| AS36690US | RSYSTEMS-EDH - R Systems Inc. | 256 | — | 1 |
| AS395325US | TRIPLEBCORP - Triple B Corporation | 256 | — | 1 |
| AS393816US | RMATV - Rocky Mountain ATV INC. | 256 | — | 1 |
| AS17296US | GIGAFY - Pioneer Broadband | 256 | 1 | 2 |
| AS37935US | KYNDRYLINC-AS-AP - Kyndryl INC | 256 | — | 1 |
| AS46447US | ASN1 - North American Derivatives Exchange, Inc. | 256 | — | 1 |
| AS27514US | KCML - Kingdon Capital Management, LLC | 256 | — | 1 |
| AS33275US | KHS-ASN - Thomas Jefferson University Hospitals, Inc. | 256 | — | 1 |
| AS36553US | BALTIMORE-CITY-POLICE-DEPARTMENT - Baltimore City Police Department | 256 | — | 1 |
| AS22715US | SALEM-INTERNET - Salem Internet, Inc. | 256 | 65.5K | 2 |
| AS54956US | VEPC-ASN-01 - Vermont Electric Power Company, Inc. | 256 | — | 1 |
| AS400038US | BEMIS-MANUFACTURING - BEMIS MANUFACTURING COMPANY | 256 | — | 1 |
| AS397061US | HRL-MLB-01 - HRL Laboratories, LLC | 256 | — | 1 |
| AS208810US | DAVID-LEE-AS David Lee | 256 | — | 1 |
| AS400681US | KALEIDESCAPE-CANADA-INC - Kaleidescape, Inc. | 256 | — | 1 |
| AS403114US | CLEANAS - CleanVDS.com | 256 | — | 1 |
| AS397701US | AMOUNT - Amount, LLC | 256 | — | 1 |
| AS6290US | ALASCOM - AT&T Alascom, Inc. | 256 | — | 1 |
| AS5117US | INETNETWORK - iNet Communications, LLC | 256 | — | 1 |
| AS50142US | BigBox BigBox Softwares LLC | 256 | 2 | 3 |
| AS393254US | DTG-LAS-VEGAS-MANAGER - DTG Las Vegas Manager, LLC | 256 | — | 1 |
| AS401867US | HOME-SHOP - HOME SHOP | 256 | — | 1 |