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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 | 24,346 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 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 | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 768 |
| 1 |
| 3 |
| AS400001US | DULUTHTRADING - Duluth Holdings Inc. | 768 | — | 2 |
| AS400418US | RIO-RANCHO-PUBLIC-SCHOOLS - Rio Rancho Public Schools | 768 | — | 3 |
| AS40226US | GLOBALFCU - Global Credit Union | 768 | — | 3 |
| AS401234US | NORTHEASTERN-LON-AS - Northeastern University | 768 | — | 2 |
| AS40238US | JOSTENS - Jostens | 768 | — | 3 |
| AS53528US | SHARP-ASN - Sharp Electronics Corporation | 768 | — | 3 |
| AS33360US | ITPFIBER - Innovative Tech Pros Corp | 768 | 4.1K | 4 |
| AS62594US | PDT - PDT Partners LLC | 768 | — | 3 |
| AS3715US | THEBOE-3715 - The Boeing Company | 768 | — | 3 |
| AS14779US | YAHOO - Yahoo Holdings Inc. | 768 | 1 | 4 |
| AS393895US | LOANDEPOT-COM - LOANDEPOT.COM, LLC | 768 | — | 2 |
| AS33024US | HWS - Harvard-Westlake School | 768 | 19 | 7 |
| AS40851US | TEMPWORKS - TEMPWORKS SOFTWARE INC. | 768 | — | 3 |
| AS53451US | NETX-INTERNET - NetX Internet, LLC. | 768 | 65.5K | 4 |
| AS15017US | MUFSD-ASN-01 - Malverne Union Free School District | 768 | — | 3 |
| AS394234US | AS-IRSC - Indian River State College | 768 | — | 3 |
| AS400829US | HCDL-SAN-ANTONIO-DATA-CENTER - H5 Data Centers | 768 | 4.1K | 4 |
| AS23389US | CAMPBELL-SCIENTIFIC - Campbell Scientific, Inc. | 768 | 1 | 3 |
| AS20421US | FLEXB-ASN - First Technology Federal Credit Union | 768 | — | 3 |
| AS400004US | SECURENET - SecureNet | 768 | 65.5K | 5 |
| AS15050US | RF-AS1 - The Rockefeller Foundation | 768 | — | 3 |
| AS393585US | HSI-WST-28500 - Hyland Software, Inc. | 768 | — | 3 |
| AS31824US | HF-MANAGEMENT-SERVICES-LLC - HF Management Services, LLC | 768 | — | 3 |
| AS18670US | ARROWSTREET - Arrowstreet Capital, L.P. | 768 | — | 2 |
| AS40175US | HEALTHSOUTH - Encompass Health Corporation | 768 | — | 3 |
| AS401993US | PROVOCATIVE - Provocative Science Holdings, Inc. | 768 | — | 3 |
| AS46106US | JACKSON-HEALTHCARE - Jackson Healthcare, LLC | 768 | — | 3 |
| AS18911US | MARKETFACTORY - Market Factory, Inc. | 768 | — | 3 |
| AS398328US | LOCALHOST-LLC - Localhost LLC | 768 | 4.1K | 4 |
| AS53302US | BALTIMORECOUNTYGOVERNMENT - Baltimore County Government | 768 | — | 3 |
| AS11721US | STYLENTECH - StylenTech LLC | 768 | 4 | 7 |
| AS46776US | EDUCATORS-CREDIT-UNION - EDUCATORS CREDIT UNION | 768 | — | 3 |
| AS29823US | PBC-WA - Premera Blue Cross | 768 | — | 2 |
| AS396497US | CENTRETECH-AS-1 - Centre Technologies, Inc. | 768 | — | 3 |
| AS26974US | BIGBYTECC - bigbyte.cc Corp | 768 | — | 3 |
| AS46889US | CLEARENT - Clearent LLC | 768 | — | 3 |
| AS394794US | COVE-2ND - Covenant Health | 768 | — | 3 |
| AS401933US | HASHIT - HashIT | 768 | — | 3 |
| AS15157US | NORWORLD - NORTHWESTERN CORPORATION | 768 | — | 3 |
| AS40413US | ASN-HCMC - Hennepin County Medical Center | 768 | — | 3 |
| AS22273US | GWCCNET-ASN - Great West Casualty Company | 768 | — | 3 |
| AS30276US | GDCNET---GREEN-DOT-CORPORATION - Green Dot Corporation | 768 | — | 3 |
| AS395502US | JCOLO - JeffColo | 768 | 4 | 7 |
| AS397804US | LDTUS-01 - Lighthouse Document Technologies, Inc | 768 | — | 3 |
| AS22752US | MRCGLOBAL-AS1 - MRC Global (US) Inc. | 768 | — | 2 |
| AS13606US | LEANDERTX-AS1 - City of Leander, Texas | 768 | — | 3 |