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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,661 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 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 | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,490 |
| 1K |
| — |
| 4 |
| AS62500US | ENL - Edge Networks LLC | 1K | — | 1 |
| AS36083US | IPDEPLOY - IPDeploy | 1K | 5 | 9 |
| AS4297US | CENTURYLINK-MTIPS4-HLR - CenturyLink Communications, LLC | 1K | — | 4 |
| AS33174US | PRINCE-WILLIAM-COUNTY-VA-ASN - Prince William County Government Department of IT (DoIT) | 1K | 4.1K | 6 |
| AS13491US | FSBA - Florida State Board of Administration | 1K | — | 3 |
| AS62134US | IHNET-EU IHNetworks, LLC | 1K | — | 1 |
| AS22253US | IHIRELLC - IHIRE LLC | 1K | — | 1 |
| AS26579US | WALMART-DR - Wal-Mart Stores, Inc. | 1K | — | 3 |
| AS399193US | NAVAJO-TECHNICAL-UNIVERSITY - Navajotech | 1K | — | 1 |
| AS31837US | LION-BILLERICA - Lionbridge Technologies, Inc. | 1K | — | 4 |
| AS15188US | K12ITC - Menlo, Inc. | 1K | — | 4 |
| AS8126US | CLOUDFABRIC - Cloud Fabric, Inc. | 1K | — | 4 |
| AS19002US | FDBS-AS - Financial Database Services | 1K | — | 1 |
| AS18907US | COLOVORE - Colovore LLC | 1K | 1 | 2 |
| AS62914US | MFI-ASN - Mattress Firm, Inc. | 1K | — | 4 |
| AS46902US | CALSTRS-SAC1 - California State Teachers Retirement System (CalSTRS) | 1K | — | 3 |
| AS401086US | ODY-ASN - Odyssey Logistics & Technology Corporation | 1K | — | 1 |
| AS25740US | POINT72 - Point72 Asset Management, LP | 1K | — | 4 |
| AS19761US | SLEDGE - Sledge Telephone Company | 1K | — | 4 |
| AS17144US | NUANCE-NOD - Microsoft Corporation | 1K | 3 | 7 |
| AS33543US | NOBEL-129-33543 - NobelBiz, Inc. | 1K | — | 3 |
| AS36842US | NORTHGATEARINSO-INC - NorthgateArinso, LLC | 1K | — | 2 |
| AS40218US | TEKCETERA-BORDER - Tekcetera Inc | 1K | — | 1 |
| AS50219US | VT-255-50219 - Valence Technology Co. | 1K | 3 | 7 |
| AS15063US | PWEH-ASN - Pratt and Whitney | 1K | — | 2 |
| AS29753US | BROISDTXASN - Brownsville Independent School District | 1K | — | 1 |
| AS394304US | SACRAMENTO-KINGS - Sacramento Downtown Arena, LLC | 1K | — | 4 |
| AS394435US | ACLIBRARY - Alameda County Library | 1K | — | 1 |
| AS6435US | TRI-NET-SOLUTIONS - Tri-Net Solutions LLC. | 1K | — | 1 |
| AS399071US | BELLIN-MEMORIAL-HOSPITAL - Bellin Memorial Hospital, Inc. | 1K | — | 3 |
| AS14465US | HITN-AS-1 - HITN | 1K | — | 1 |
| AS46917US | PRAGMA-FS-01 - Pragma Financial Systems | 1K | — | 4 |
| AS399961US | BELMONT-UNIVERSITY - Belmont University | 1K | — | 1 |
| AS401914US | INTERCODING-NET - INTERCODING | 1K | — | 3 |
| AS32802US | BROCKTONHOSPITAL-ORG - Brockton Hospital | 1K | — | 4 |
| AS17034US | GL-945-17034 - Gozunga LLC | 1K | 2K | 3 |
| AS6456US | ALTOPIA - Altopia Corporation | 1K | 1 | 2 |
| AS402816US | BACKROAD - BackRoad | 1K | 69.6K | 3 |
| AS20050US | SPPINTERNET01 - Southwest Power Pool | 1K | — | 4 |
| AS23096US | CNSL-32-23096 - Controlled Networks Solution LLC | 1K | — | 4 |
| AS23200US | CHARTER-23200-INDIANA-C3 - Charter Communications LLC | 1K | 256 | 2 |
| AS54021US | FIXFLYER1 - FIX FLYER, LLC | 1K | — | 4 |
| AS897US | TURTLE-ROCK-STUDIOS - Turtle Rock Studios, Inc. | 1K | 5 | 9 |
| AS19068US | ASN-TOMMYBAHAMA - Tommy Bahama Group, Inc. | 1K | — | 3 |
| AS17406US | PSCU-NET1 - PSCU INCORPORATED | 1K | — | 4 |
| AS19264US | TELECURVE - TeleCurve, LLC | 1K | — | 1 |