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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.1M | 21,109 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,244 |
| 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 | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,674 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,951 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,430 |
| 256 |
| — |
| 1 |
| AS396136US | ECHO-ATL1 - Echo Technologies, LLC | 256 | — | 1 |
| AS14290US | ASD-ANSWERING-SERVICE-FOR-DIRECTORS - Answering Service for Directors | 256 | — | 1 |
| AS15299US | CFS-AS01 - CarsForSale.com | 256 | — | 1 |
| AS395299US | SANJOSE-COSTARICA-01 - THE WESTERN UNION COMPANY | 256 | — | 1 |
| AS398470US | NEMCC - NEMCC | 256 | — | 1 |
| AS397127US | IRACING - IRACING.COM MOTORSPORT SIMULATIONS, LLC | 256 | 1 | 2 |
| AS397675US | ASD-WHP-BLOCK - Armstrong School District | 256 | — | 1 |
| AS393364US | STARWOOD-NYC-417FIFTH - Marriott International, Inc. | 256 | — | 1 |
| AS23070US | VCHS-ORDNE - Valley County Health System | 256 | — | 1 |
| AS396133US | HOUSTON-ZOO - Houston Zoo | 256 | — | 1 |
| AS401602US | KEYSTONEREN - Keystone REN, LLC | 256 | 65.5K | 2 |
| AS398244US | ECHONET-01 - EchoNet | 256 | — | 1 |
| AS603US | EQUINIX-EC - Equinix, Inc. | 256 | 4.1K | 2 |
| AS31793US | HOTWI-PRIMECAST - Hotwire Communications | 256 | — | 1 |
| AS396222US | TENABLE-NETWORK-SECURITY-INC - Tenable, Inc. | 256 | — | 1 |
| AS36191US | QUALITYINSIGHTS - Quality Insights Inc. | 256 | — | 1 |
| AS397723US | LAST-MILE-NETWORKS - Last Mile Networks LLC | 256 | 65.5K | 2 |
| AS397333US | PETCO-DDC - Petco | 256 | — | 1 |
| AS400730US | SPARTANBURGCOUNTY-192-146-148-0 - Spartanburg County | 256 | — | 1 |
| AS214206US | Four-Seasons-Hosting Four Seasons Hosting LLC | 256 | 17 | 3 |
| AS26988US | ADAGE-TECH - Adage Technologies, Inc | 256 | 2 | 3 |
| AS16767US | SPI-TC-AZO - Summit Polymers, Inc. | 256 | — | 1 |
| AS32532US | KMC-37-ASN - Kuakini Medical Center | 256 | — | 1 |
| AS393876US | AS-PMGAA - Phoenix-Mesa Gateway Airport Authority | 256 | — | 1 |
| AS399813US | LAER-AS-MEL1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS395665US | EDFINANCIAL-SERVICES-LLC - EDFINANCIAL SERVICES, LLC | 256 | — | 1 |
| AS54513US | ERHC - EL RIO HEALTH CENTER | 256 | — | 1 |
| AS398845US | MCC-WACO - McLennan Community College | 256 | — | 1 |
| AS16588US | POLITICO - Politico, LLC | 256 | — | 1 |
| AS18893US | SELECT-EQUITY - Select Equity Group, Inc. | 256 | — | 1 |
| AS15210US | VIV-ASN - Vividion Therapeutics, Inc. | 256 | — | 1 |
| AS55269US | CST - Critical Signal Technologies, Inc | 256 | — | 1 |
| AS396404US | ANDERSON - Anderson Hospital | 256 | — | 1 |
| AS62677US | WFASN - William Floyd Union Free School District | 256 | — | 1 |
| AS397773US | ENSCO-INC - ENSCO, Inc. | 256 | — | 1 |
| AS393459US | DOMOINC772 - Domo, Inc. | 256 | — | 1 |
| AS394093US | HS-ASN - Hallmark Sweet, INC | 256 | — | 1 |
| AS62951US | DDRCORP - DDR Corp. | 256 | — | 1 |
| AS18860US | AS19876 - Berger Schatz LLP | 256 | — | 1 |
| AS395103US | LUCASFILM-SKYSOUND - Lucasfilm Ltd. LLC | 256 | — | 1 |
| AS62528US | CNV-MTK-CORP - Convey Compliance Systems, Inc. | 256 | — | 1 |
| AS6302US | AGP-AS1 - AG PROCESSING INC., A COOPERATIVE | 256 | — | 1 |
| AS398714US | PCHC-SPECTRUM-ATT - Asset Protection Management II L.L.C. | 256 | — | 1 |
| AS215069US | oocm Office of Consensus Maintenance LLC | 256 | 8 | 6 |
| AS63424US | APM-442 - ADVANTAGE DENTAL CLINICS | 256 | — | 1 |
| AS400962US | FOURTEEN-FOODS-01 - Fourteen Foods, LLC | 256 | — | 1 |