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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,160 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,243 |
| 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 | 3,669 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,948 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,372 |
| 256 |
| — |
| 1 |
| AS36863US | ABC-BITS-WC - American Broadcasting Companies, Inc. | 256 | — | 1 |
| AS394143US | LTX-DC - C.O.P.S. Monitoring | 256 | — | 1 |
| AS396909US | NMMCC-AS - New Mexico Mutual Casualty Company | 256 | — | 1 |
| AS399371US | KIRKLAND-ELLIS-BN - Kirkland & Ellis LLP | 256 | — | 1 |
| AS40909US | FUNDAMENTAL-ADVISORS-ASN - Fundamental Advisors LP | 256 | — | 1 |
| AS14128US | NU-EDU - National University | 256 | — | 1 |
| AS6343US | OMEGASYS-DC1 - Omega Systems Consultants, LLC | 256 | — | 1 |
| AS3601US | IXA-NET - Interconnected Associates (IXA) Inc. | 256 | 1 | 2 |
| AS393554US | KELLERAMERICAS - Keller Foundations, LLC | 256 | — | 1 |
| AS894US | NINJA-IX-SERVICES-ASN - Ninja-IX Services LLC | 256 | 257 | 3 |
| AS30384US | GM-AS NUMBER - Guild Mortgage Company LLC | 256 | — | 1 |
| AS204874US | SAASTACK-LLC SaaStack LLC | 256 | — | 1 |
| AS395757US | SCCFCU-PUBLIC01 - Santa Clara County Federal Credit Union | 256 | — | 1 |
| AS399636US | ITHAKA-AS-AA2 - ITHAKA Harbors, Inc. | 256 | — | 1 |
| AS64230US | MBX-LIB - Motherboard Express Company | 256 | 1 | 2 |
| AS20071US | KUXUEYUN-US - KUXUEYUN LLC | 256 | 17 | 3 |
| AS53723US | ROUTESI-MAIN - Routesi LLC | 256 | 256 | 2 |
| AS398243US | HE-US-01 - Holmes Electric Inc. | 256 | — | 1 |
| AS394864US | PCO-AS - PC OPEN Incorporated | 256 | 1 | 2 |
| AS394670US | IEL-AS-US-01 - Integrity Express Logistics, LLC | 256 | — | 1 |
| AS394608US | KEXP-AS-NAME - KEXP | 256 | — | 1 |
| AS31825US | STARWOOD-VO - Starwood Vacation Ownership | 256 | — | 1 |
| AS14262US | CALUMET-ASN-01 - CALUMET COUNTY | 256 | — | 1 |
| AS21941US | SYNCSORT-INC - Precisely Software Incorporated | 256 | — | 1 |
| AS25737US | JONE - Jone Broadband LLC | 256 | 256 | 2 |
| AS202397US | nexeon Nexeon Technologies, Inc. | 256 | — | 1 |
| AS401896US | MISIU-USA - MISIU LLC | 256 | 257 | 3 |
| AS32150US | BRADFITZ-DANGA - DANGA INTERACTIVE | 256 | 3 | 4 |
| AS19434US | SPRICHARDS - S. P. RICHARDS COMPANY | 256 | — | 1 |
| AS32826US | TZPRINT - Three-Z Printing Co. | 256 | — | 1 |
| AS36059US | ETOGY-01 - Etogy, Inc. | 256 | — | 1 |
| AS399148US | ZETALINK - Zetalink | 256 | — | 1 |
| AS395388US | T4T-NET - int3 Systems, LLC | 256 | 1 | 2 |
| AS394521US | SMH-91-WTBY-CT - Saint Mary's Hospital, Inc. | 256 | — | 1 |
| AS11511US | CRETE-INTERNET - Crete Carrier Corporation | 256 | 1 | 2 |
| AS399398US | FITNESS-INTERNATIONAL - FITNESS INTERNATIONAL | 256 | — | 1 |
| AS18633US | HPICORP - Health Plans Inc | 256 | — | 1 |
| AS399407US | SALEM-AC-01 - Salem Academy and College | 256 | — | 1 |
| AS1859US | DISN-PILOTNET5 - RTX BBN Technologies, Inc. | 256 | — | 1 |
| AS21780US | GRIFFITH-LABORATORIES - GRIFFITH FOODS INC. | 256 | — | 1 |
| AS397100US | JT-GLOBAL-US - ekit | 256 | — | 1 |
| AS18645US | UMHB-BELTON - UMHB | 256 | — | 1 |
| AS395641US | USCB-01 - USCB Inc | 256 | — | 1 |
| AS398332US | PPFULLWAN1 - Professional Plastics | 256 | — | 1 |
| AS399401US | LOUISIANA-INTERNET-TECHNOLOGY - LOUISIANA INTERNET TECHNOLOGY, LLC | 256 | — | 1 |
| AS27514US | KCML - Kingdon Capital Management, LLC | 256 | — | 1 |