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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| 256 |
| — |
| 1 |
| AS33648US | INTERNET-LLC - Patriot Broadband | 256 | 1.5K | 7 |
| AS54349US | FLNG-HOU - Freeport LNG Development, L.P. | 256 | — | 1 |
| AS53417US | RUDOLPHS-INC - Rudolph's, Inc. | 256 | — | 1 |
| AS397702US | SSSS - 1776 Solutions, LLC | 256 | 65.5K | 3 |
| AS401492US | WINDING-RIVERS-LIBRARY-SYSTEM - Winding Rivers Library System | 256 | — | 1 |
| AS393876US | AS-PMGAA - Phoenix-Mesa Gateway Airport Authority | 256 | — | 1 |
| AS395314US | AECC-SANJUANPOOLS-ASN - American Environmental Container Corp. | 256 | 256 | 2 |
| AS5US | SYMBOLICS - WFA Group LLC | 256 | — | 1 |
| AS399539US | COTTAGE-HEALTH01 - Cottage Health | 256 | — | 1 |
| AS396910US | AS-LCPA-14 - Lee County Port Authority | 256 | — | 1 |
| AS19765US | IBM-RC-440ABL - IBM Corporation | 256 | — | 1 |
| AS402760US | DANISSANIELS - Daniel | 256 | — | 1 |
| AS19887US | KIASN - KI- | 256 | — | 1 |
| AS393352US | CITY-OF-LAREDO - CITY OF LAREDO | 256 | — | 1 |
| AS53825US | ACMC-AS - Alameda Health System | 256 | — | 1 |
| AS15299US | CFS-AS01 - CarsForSale.com | 256 | — | 1 |
| AS16398US | SMC-GP - Supermicro Computer | 256 | — | 1 |
| AS48118US | ARIES-INVESTMENTS-AS Aries Investments LLC. | 256 | — | 1 |
| AS36527US | RINCON-WIRELESS - Rincon Wireless | 256 | — | 1 |
| AS18559US | CANIK - CANIK USA, LLC | 256 | 256 | 2 |
| AS393575US | PCSIA-3710 - Professional Computer Solutions, LLC | 256 | 1 | 2 |
| AS394796US | MIDLOTHIAN-01 - City of Midlothian | 256 | — | 1 |
| AS36325US | OCNL-AS36325 - Operations & Compliance Network LLC | 256 | — | 1 |
| AS402260US | DR-ASN01 - University of Colorado Medicine | 256 | — | 1 |
| AS398741US | AS-VERTEXLINK-01 - VertexLink Inc | 256 | 256 | 2 |
| AS401438US | NETFABRIC-01 - NetFabric, LLC | 256 | — | 1 |
| AS397723US | LAST-MILE-NETWORKS - Last Mile Networks LLC | 256 | 65.5K | 2 |
| AS398994US | KHS-USA-11 - KHS USA, Inc. | 256 | — | 1 |
| AS55123US | 37589 - Brilliant Jewelers/MJJ Inc. | 256 | — | 1 |
| AS27259US | AMERICAN-STUDENT-ASSISTANCE - American Student Assistance | 256 | — | 1 |
| AS30477US | SHO - Shorenstein Realty Services | 256 | — | 1 |
| AS23070US | VCHS-ORDNE - Valley County Health System | 256 | — | 1 |
| AS20262US | DON-JARVIS - Data Innovations LLC | 256 | — | 1 |
| AS399235US | UPLINK-INTERNET - Uplink L.L.C. | 256 | 256 | 2 |
| AS22620US | BOARDPENSIONS-PRESBYTERIAN - The Board of Pensions of the Presbyterian Church (USA) | 256 | — | 1 |
| AS393310US | ANDERSON ASN - Baptist Memorial Health Care Corporation | 256 | — | 1 |
| AS394174US | AIDC - American International Distribution Corporation | 256 | — | 1 |
| AS395296US | MSFA - MSFA | 256 | — | 1 |
| AS33428US | NHS-39AS - The New-York Historical Society | 256 | — | 1 |
| AS200257US | UserDepth-AS UserDepth LLC | 256 | — | 1 |
| AS398178US | TELCION-NETOPS-01 - Telcion Communications Group | 256 | — | 1 |
| AS395070US | ALLSOUTH-INTERNET - AllSouth Federal Credit Union | 256 | — | 1 |
| AS13117US | ASNXGEU Nexusguard, Inc | 256 | — | 1 |
| AS400855US | AVD-PRINCETON - Advantage Voice & Data, LLC | 256 | — | 1 |
| AS400965US | CYPRESS-FIBER-01 - Cypress Fiber | 256 | 65.5K | 2 |
| AS63135US | TABOR-COLLEGE-01 - Tabor College, Inc. | 256 | — | 1 |