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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 | 23,666 |
| 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 |
| 234 |
| 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 | 4,491 |
| — |
| — |
| 0 |
| AS36449US | INSIGHT-AS - Insight Direct USA, Inc. | — | — | 0 |
| AS36584US | ARCHEO-FUTURUS - Archeo Futurus, Inc. | — | — | 0 |
| AS36045US | ITY-AS-36045 - City of Kansas City Missouri | — | — | 0 |
| AS36017US | CESL-21-ASN-36017 - Claro Enterprise Solutions, LLC | — | — | 0 |
| AS27469US | CT-EDU-NET-2 - Connecticut Education Network | — | — | 0 |
| AS33744US | ANEW-TELECOM-DBA-CALL-AMERICA - CALL AMERICA INC | — | — | 0 |
| AS26990US | ASN-NPG-NY-NYC - Springer Nature America, INC | — | — | 0 |
| AS26865US | FORBES-MEDIA-LLC - Forbes Media LLC. | — | — | 0 |
| AS32975US | THOMSON-REUTERS - Thomson Reuters Holdings Inc | — | — | 0 |
| AS26790US | SPHEREXX - Spherexx.com | — | — | 0 |
| AS26991US | PERSH - Pershing Square Capital Management, L.P. | — | — | 0 |
| AS32259US | AREA-EDUCATION-AGENCY-267 - Area Education Agency 267 | — | — | 0 |
| AS30656US | GRAPHIANT-SERVICES - GRAPHIANT INC | — | — | 0 |
| AS26070US | XACCEL-DALLAS-01 - Xaccel Networks LLC | — | — | 0 |
| AS30386US | ACI-WORLDWIDE - ACI Worldwide, Inc. | — | — | 0 |
| AS30347US | IBERIABANKLFY - IBERIABANK CORPORATION | — | — | 0 |
| AS30010US | DECIX-NYC-MAPS - DE-CIX North America Inc. | — | — | 0 |
| AS30117US | SJC-CLASSIC - Classic Vacations, LLC | — | — | 0 |
| AS55074US | DIALOGTECH-EAST - Invoca, Inc. | — | — | 0 |
| AS54988US | CMAS1 - cloudmain.com | — | — | 0 |
| AS54263US | AS-ASN-4 - Nasdaq, Inc. | — | — | 0 |
| AS400055US | AVI-DNS-SAAS - Avago Technologies U.S. Inc. | — | — | 0 |
| AS402305US | NOVONODE - Quality Servers LLC | — | — | 0 |
| AS402113US | SMITH COUNTY - Smith County | — | — | 0 |
| AS396650US | VRSN-AC50-340 - VeriSign Global Registry Services | — | — | 0 |
| AS398620US | CHARTER-BGP-INFRASTRUCTURE - Charter Communications LLC | — | — | 0 |
| AS398575US | MICROSOFT-AZURE-ORBITAL - Microsoft Corporation | — | — | 0 |
| AS398442US | WCD-AS-01 - Wisconsin Center District | — | — | 0 |
| AS398511US | DNIC-ASBLK-4BYTE - United States Department of Defense (DoD) | — | — | 0 |
| AS397673US | AHELIOTECH - AHELIOTECH | — | — | 0 |
| AS397653US | CITYCR - City of Cedar Rapids | — | — | 0 |
| AS397551US | USFHP-PACMED - PACMED CLINICS | — | — | 0 |
| AS398133US | DMEA - DMEA | — | — | 0 |
| AS400058US | HUDSON - Right Networks, LLC | — | — | 0 |
| AS47026US | DIANOIA - Dianoia LLC | — | — | 0 |
| AS399532US | ULAYER-AS - Universal Layer LLC | — | — | 0 |
| AS399677US | TSYS-EQUINIX-LD8 - Global Payments Inc. | — | — | 0 |
| AS399202US | VIPER-ASN01 - Vasuki Systems Inc | — | — | 0 |
| AS399162US | SECURITYSERVICES - Vercara, LLC | — | — | 0 |
| AS398877US | RCO-ARIN-01 - REAL CLOUD ONE LLC | — | — | 0 |
| AS400253US | NOA-REMOTE - Nintendo Of America inc. | — | — | 0 |
| AS33479US | CEENTA - Charlotte Eye, Ear, Nose and Throat Associates, P.A. | — | — | 0 |
| AS33399US | CWM-INTERNET - CITY OF WEST MELBOURNE | — | — | 0 |
| AS33215US | OVATI-10 - Ovation Travel Group, Inc. | — | — | 0 |
| AS33242US | LIGHTYEAR-NY - LIGHTYEAR CAPITAL LLC | — | — | 0 |
| AS33005US | ELTOPIA - Eltopia Communications, LLC | — | — | 0 |