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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 | 21,138 |
| 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 | 4,417 |
| 256 |
| — |
| 1 |
| AS19590US | FICOH-ASN-1 - FICOH | 256 | — | 1 |
| AS402344US | XPCTECH - XPCTECH | 256 | 65.5K | 2 |
| AS402213US | BUFFALO BILLS STADIUM - Bills stadium and events company llc | 256 | — | 1 |
| AS54752US | EQSERVERS-US302 - Eqservers LLC | 256 | — | 1 |
| AS398331US | 1FBUSA-PROD - 1st Financial Bank USA | 256 | — | 1 |
| AS25744US | LOGIC-SPRINGS-TECHNOLOGIES - Logic Springs Technologies | 256 | — | 1 |
| AS46651US | OMD3 - Optimized Micro Devices LLC | 256 | — | 1 |
| AS63032US | DICOMGRID - DICOM Grid Inc | 256 | — | 1 |
| AS150802US | NTC-AS-INBAG - NORTHERN TRUST CORPORATION | 256 | — | 1 |
| AS401668US | ROGERSNETWORKS - IPM Computers LLC | 256 | — | 1 |
| AS211729US | BAIYUEXIAO-AS Yiming Zhang | 256 | 27 | 10 |
| AS401049US | GRYPHO5-01 - Grypho5, LLC | 256 | — | 1 |
| AS30460US | HOLMESCC - Holmes Community College | 256 | — | 1 |
| AS30472US | EAST-WEST-CENTER-HOUSINGNET - East-West Center | 256 | — | 1 |
| AS19096US | DESALES-NETWORK - DeSales University | 256 | — | 1 |
| AS54698US | ALTUM-CAPITAL-MANAGEMENT-LLC - Altum Capital Management LLC | 256 | — | 1 |
| AS400090US | LMKR-AS-01 - LMK Resources Inc. | 256 | — | 1 |
| AS395767US | SUNCAST - SUNCAST Corporation | 256 | — | 1 |
| AS399004US | COUNTERPATH-BOSTON - Counterpath, LLC | 256 | — | 1 |
| AS55118US | VALUEDRUGCOMPANYVD-32AS - Value Drug Company Inc. | 256 | — | 1 |
| AS16899US | SNDCOFFEE-PUBLIC-IPBLOCK - S&D Coffee, Inc. | 256 | — | 1 |
| AS35858US | ATMOS-ENERGY - ATMOS ENERGY CORP | 256 | — | 1 |
| AS26545US | THE-BANKERS-BANK - The Bankers Bank | 256 | — | 1 |
| AS399578US | HTUL - Hillside (Shared Services US) LLC | 256 | — | 1 |
| AS26200US | PSAM-ASN - P. Schoenfeld Asset Management, LLC | 256 | — | 1 |
| AS54261US | PHCCNET - Pasco-Hernando State College | 256 | — | 1 |
| AS396062US | VDT-6-NRO - VDOT | 256 | — | 1 |
| AS23196US | SYSTEMS-APPL-ENG - Systems Application Enterprises, Inc. | 256 | — | 1 |
| AS395041US | SFHS-CAPE-GIRARDEAU - Saint Francis Medical Center | 256 | — | 1 |
| AS205397US | AS-69HOST 69HOST LLC | 256 | — | 1 |
| AS139682US | APKSL-AS-AP - Arnold & Porter Kaye Scholer LLP | 256 | — | 1 |
| AS32872US | DIFF-COMP-01 - Difficult Computing, LLC | 256 | 256 | 2 |
| AS836US | WHITE-PLAINS-HOSPITAL - White Plains Hospital | 256 | — | 1 |
| AS400614US | APOG-OZARKS - Apogee Telecom Inc. | 256 | — | 1 |
| AS26849US | AGFIRST-FARM-CREDIT-BANK - AgFirst Farm Credit Bank | 256 | — | 1 |
| AS19135US | FRHS-ORG-ASN - FAITH REGIONAL HEALTH SERVICES | 256 | — | 1 |
| AS22076US | NEWSBANK - NewsBank Inc. | 256 | — | 1 |
| AS399209US | ACUMED-02 - Acumed, LLC | 256 | 1 | 2 |
| AS398667US | MALWAREBYTES-NETWORK-HQ - Malwarebytes, Inc | 256 | — | 1 |
| AS401722US | OPTYXBROADBAND-TX - Optyx Broadband Inc. | 256 | — | 1 |
| AS21868US | A10H - A10H LLC | 256 | 256 | 2 |
| AS29811US | SCHOLASTIC-INC - Scholastic Inc. | 256 | — | 1 |
| AS12230US | TABLEBOUND - Tablebound LLC | 256 | 256 | 2 |
| AS46782US | GTS-169-ASN-01 - Gabriels Technology Solutions, Inc. | 256 | — | 1 |
| AS399849US | BIZZARROAGENCY - BIZZARRO AGENCY LLC | 256 | — | 1 |
| AS393817US | LMC-BH - Lake Michigan College | 256 | — | 1 |