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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 | 3,140 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,178 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,241 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 373 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,667 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,946 |
| AS701US | UUNET - Verizon Business | 43.6M | 999 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,371 |
| 768 |
| — |
| 3 |
| AS21537US | ENC-01 - Midland Credit Management, Inc. | 768 | — | 3 |
| AS393847US | AAMC-AS1 - Association of American Medical Colleges | 768 | — | 3 |
| AS6591US | INGR-ASN - Intergraph Corporation | 768 | — | 3 |
| AS7988US | CENTURYLINK-SPA-SINGAPORE - CenturyLink Communications, LLC | 768 | — | 2 |
| AS15258US | GBCO - Gilbane Building Company | 768 | — | 3 |
| AS18911US | MARKETFACTORY - Market Factory, Inc. | 768 | — | 3 |
| AS13344US | NETEX-INC - NetEx Inc. | 768 | — | 3 |
| AS40413US | ASN-HCMC - Hennepin County Medical Center | 768 | — | 3 |
| AS394234US | AS-IRSC - Indian River State College | 768 | — | 3 |
| AS11721US | STYLENTECH - StylenTech LLC | 768 | 5 | 8 |
| AS393600US | RELIANCE-01 - Reliance Standard Life Insurance Company | 768 | — | 3 |
| AS53722US | SSSASN - Social & Scientific Systems, Inc. | 768 | 3 | 6 |
| AS396497US | CENTRETECH-AS-1 - Centre Technologies, Inc. | 768 | — | 3 |
| AS10944US | ABAG-10944 - Association of Bay Area Governments | 768 | — | 3 |
| AS33024US | HWS - Harvard-Westlake School | 768 | 19 | 7 |
| AS395169US | SCRIPTPRO-1 - ScriptPro LLC | 768 | — | 3 |
| AS398328US | LOCALHOST-LLC - Localhost LLC | 768 | 4.1K | 4 |
| AS3715US | THEBOE-3715 - The Boeing Company | 768 | — | 3 |
| AS54192US | MONTEBELLO-USD - Montebello Unified School District | 768 | — | 2 |
| AS395580US | CENTRAL-BLK - Central College | 768 | 258 | 6 |
| AS400626US | ACSC1006 - Automobile Club of Southern California | 768 | — | 3 |
| AS22841US | NCCNORTHAMPTON - Northampton Community College | 768 | — | 3 |
| AS18864US | FIRST-UNITED-BANK - First United Bank and Trust Company | 768 | — | 3 |
| AS16565US | FIRST-HAWAIIAN-BANK - First Hawaiian Bank | 768 | — | 3 |
| AS23047US | MCKINSEY-US - Mckinsey & Company | 768 | — | 3 |
| AS16711US | EHI-NA-AS-2 - Enterprise Holdings, Inc. | 768 | 2 | 5 |
| AS20421US | FLEXB-ASN - First Technology Federal Credit Union | 768 | — | 3 |
| AS14776US | YAHOO - Yahoo Holdings Inc. | 768 | 1 | 4 |
| AS11051US | CYBERVERSE - Evocative, Inc. | 768 | — | 3 |
| AS23389US | CAMPBELL-SCIENTIFIC - Campbell Scientific, Inc. | 768 | 1 | 3 |
| AS16577US | DIGITALEDGE-2 - DIGITAL EDGE VENTURES INC. | 768 | — | 2 |
| AS55163US | LINKEDIN - LinkedIn Corporation | 768 | 1 | 4 |
| AS33601US | OUTREACHBROADBAND - Outreach Broadband, Inc. | 768 | — | 2 |
| AS62588US | ASGDC - Active Solutions Group | 768 | — | 3 |
| AS11307US | 6750REI - Recreational Equipment Inc. | 768 | — | 3 |
| AS393895US | LOANDEPOT-COM - LOANDEPOT.COM, LLC | 768 | — | 2 |
| AS33360US | ITPFIBER - Innovative Tech Pros Corp | 768 | 4.1K | 4 |
| AS397000US | CLARKPEST-ASN - Clark Pest Control | 768 | — | 2 |
| AS63112US | SERVICENOW-CORP - Service-now.com | 768 | — | 3 |
| AS400004US | SECURENET - SecureNet | 768 | 65.5K | 5 |
| AS400418US | RIO-RANCHO-PUBLIC-SCHOOLS - Rio Rancho Public Schools | 768 | — | 3 |
| AS11230US | MHSFL - Managed Hosting Services, LLC | 768 | — | 3 |
| AS15050US | RF-AS1 - The Rockefeller Foundation | 768 | — | 3 |
| AS11983US | TIKTOK-USDS - Tiktok U.S. Data Security Inc. | 768 | 1 | 4 |
| AS31776US | BUSINESS-WIRE-NY - Business Wire | 768 | — | 2 |
| AS32032US | ORGILL-AS - Orgill, Inc. | 768 | — | 3 |