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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) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218M | 24,645 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,307 |
| 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.
32,220 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,890 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,006 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,364 |
| 256 |
| — |
| 1 |
| AS63097US | CITY-OF-POWAY - City of Poway | 256 | — | 1 |
| AS36302US | AMSCOT-ASN - Amscot Corporation | 256 | — | 1 |
| AS393606US | TECHNEXUS - TechNexus LLC | 256 | — | 1 |
| AS198055US | HavenRacks HavenRacks Inc. | 256 | 1 | 2 |
| AS399099US | PCPS-ASN - petersburg city public schools | 256 | — | 1 |
| AS395392US | FASCETDR - Fascet LLC | 256 | — | 1 |
| AS46591US | DPAM-AS1 - DENSO Products and Services Americas, INC. | 256 | — | 1 |
| AS397024US | AMGNATIONAL - AMG National Trust Bank | 256 | — | 1 |
| AS401475US | CIGIE-ASN1 - CIGIE | 256 | 1 | 2 |
| AS18977US | WIKTEL-VOICE - Wikstrom Telephone Company, Incorporated | 256 | — | 1 |
| AS20317US | ABN-AS - Abnormal Inc | 256 | 256 | 2 |
| AS396208US | AZLE-ISD - Azle Independent School District | 256 | — | 1 |
| AS40818US | INSTADART - Instadart, Inc. | 256 | 12 | 10 |
| AS394904US | SPARWORKS - SparWorks LLC | 256 | — | 1 |
| AS401835US | BCR - Brass City Residences Inc. | 256 | 19 | 20 |
| AS33381US | AIM-52-ASN - ABS Investment Management LLC | 256 | — | 1 |
| AS54591US | CEF-DIGITAL-25081 - CEF DIGITAL SYSTEMS | 256 | 258 | 4 |
| AS400647US | CASSIA-COUNTY-ID - Cassia County | 256 | 256 | 2 |
| AS36126US | RNES - Rewards Network Establishment Services Inc. | 256 | — | 1 |
| AS22669US | CNANHQ-01 - CNA National Warranty Corporation | 256 | — | 1 |
| AS395285US | TVW-K20 - TVW | 256 | — | 1 |
| AS398396US | NATOMAS-USD - Natomas Unified School District | 256 | — | 1 |
| AS36272US | ZBIDR - Ziff Brothers Investments, LLC | 256 | — | 1 |
| AS397646US | MHU - Mars Hill University | 256 | 8.2K | 4 |
| AS396500US | MINAKILABS-AS01 - MinakiLabs | 256 | 4.1K | 2 |
| AS205763US | SUPPORTSERVERS Support Servers LLC | 256 | 524.3K | 2 |
| AS400680US | EVERFOX - EVERFOX Holdings LLC | 256 | — | 1 |
| AS26736US | AGRI-369 - Viterra USA Investment LLC | 256 | — | 1 |
| AS13430US | THEWISP-NWIL - DC COMPUTERS | 256 | — | 1 |
| AS53409US | IEWC - IEWC | 256 | — | 1 |
| AS400290US | NATURAL-STATE - Natural State Wireless, LLC | 256 | — | 1 |
| AS53579US | FLP-5 - The Free Library of Philadelphia | 256 | — | 1 |
| AS29865US | CONTREALTYCORP - Continental Realty Corporation | 256 | — | 1 |
| AS398953US | ABC-WAREHOUSE - ABC Warehouse | 256 | — | 1 |
| AS17357US | AS-DCI-31 - Development Corporation for Israel | 256 | — | 1 |
| AS400352US | AFS-TX-01 - AFS Logistics, LLC | 256 | — | 1 |
| AS54567US | CORPORATE-ROLANDDGA - Roland DGA Corporation | 256 | — | 1 |
| AS836US | WHITE-PLAINS-HOSPITAL - White Plains Hospital | 256 | — | 1 |
| AS63029US | PAYSCALE-WEB - Payscale, Inc. | 256 | — | 1 |
| AS396214US | HOSPITALFORSPECIALCARE - Hospital for Special Care | 256 | — | 1 |
| AS33390US | READYTECH - READYTECH CORPORATION | 256 | — | 1 |
| AS401201US | RENO-TAHOE-AIRPORT-AUTHORITY - Reno-Tahoe Airport Authority | 256 | — | 1 |
| AS398426US | APOG-RIPON - Apogee Telecom Inc. | 256 | — | 1 |
| AS395112US | BEAUMONT-ISD-01 - Beaumont ISD | 256 | — | 1 |
| AS53463US | AGC-01 - American Greetings | 256 | — | 1 |
| AS12278US | AHMC-DC-01 - AHMC HEALTHCARE INC | 256 | — | 1 |