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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 | 23,666 |
| 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 |
| 234 |
| 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 | 4,491 |
| 5.1K |
| — |
| 2 |
| AS53428US | KCS-US-NEBIUS - Nebius Inc. | 5.1K | 16 | 10 |
| AS1097US | CORE-TRANSIT - Core Transit LLC | 5.1K | 16.4K | 24 |
| AS11949US | COZAD-TELEPHONE-COMPANY - COZAD TELEPHONE COMPANY | 5.1K | — | 2 |
| AS32135US | SAKURA-EYEBALL - SAKURA LTD. | 5.1K | — | 20 |
| AS54945US | RACK59 - RACK59 Partners, LLC | 5.1K | 65.5K | 5 |
| AS399150US | ISPEXCHANGECORP - ispexchangecorp | 5.1K | — | 5 |
| AS16934US | LEACO-INTERNET - Leaco Rural Telephone | 5.1K | 65.5K | 3 |
| AS394968US | QTS-CHI - Quality Technology Services, LLC | 5.1K | 65.5K | 7 |
| AS32442US | USMNSTCMARCO01 - Marco Technologies LLC | 5.1K | — | 4 |
| AS31777US | SPARCC-AS - Stark Portage Area Computer Consortium | 5.1K | — | 5 |
| AS19436US | CAPROCK-1 - Cap Rock Telephone Cooperative, Inc. | 5.1K | — | 2 |
| AS4884US | TCHD - Tarrant County Hospital District | 5.1K | — | 11 |
| AS40773US | FRANTIC-LLC - Frantic, LLC. | 5.1K | 1 | 11 |
| AS14464US | RINET - Rhode Island Network for Educ. Technology | 5.1K | — | 5 |
| AS36482US | PLACER-ASN - County of Placer | 5.1K | — | 2 |
| AS29733US | USFOOD - US FOODS, INC. | 5.1K | — | 13 |
| AS46708US | ENVOI - Allied International Corp of VA. | 5.1K | — | 2 |
| AS543US | HP-POLY - HP Inc. | 5.1K | — | 5 |
| AS53628US | APYLI-AS - Apyl Inc | 5.1K | — | 15 |
| AS19324US | DOSARREST - Dosarrest Internet Security LTD | 5.1K | 2 | 21 |
| AS30455US | HOSTVENOM-LLC - HostVenom LLC | 5.1K | 4.1K | 18 |
| AS36825US | ASN-PNP - Plug and Play Tech Center | 5.1K | — | 2 |
| AS394117US | ECI-ASN - Encore Communications, Inc | 5.1K | 65.5K | 3 |
| AS62715US | CRASHPLAN - CrashPlan | 5.1K | — | 17 |
| AS18719US | TSRSOLUTIONS - TSR Solutions, Inc. | 5.1K | — | 5 |
| AS26111US | EU-FTTH - Erwin Utilities | 5.1K | — | 8 |
| AS4986US | INTERSTAR - InterStar Network Services, Inc. | 5.1K | 65.5K | 3 |
| AS39938US | RCW - River Canyon Wireless | 5.1K | — | 20 |
| AS395236US | STARTELCO - Star Communications | 5.1K | 65.5K | 3 |
| AS393568US | ITT-CORPORATION - ITT Corporation | 5.1K | — | 13 |
| AS23423US | WASATCH BROADBAND - Wasatch Broadband | 5.1K | 65.5K | 21 |
| AS32746US | CDI - Computer Design & Integration LLC | 5.1K | — | 20 |
| AS14762US | AMGEN - AMGEN, Inc. | 5.1K | — | 17 |
| AS62917US | GIGABITFIBER-ICFN - Gigabit Communications LLC | 5.1K | 1.5K | 31 |
| AS17204US | AKAMAI-NOMINUM-ASN - Akamai Technologies, Inc. | 5.1K | 1 | 3 |
| AS13943US | YK-COMMUNICATIONS - Y K Communications, LTD | 5.1K | 65.5K | 4 |
| AS393964US | HMFB - High Mountain Farm, LLC | 5.1K | — | 14 |
| AS10632US | PSE-AS - Puget Sound Energy | 5.1K | — | 12 |
| AS17004US | BROADBANDONDEMAND - Kentucky Wimax | 5.1K | — | 2 |
| AS44259US | ULTAHOST-AP-AS Ultahost, Inc. | 5.1K | — | 20 |
| AS55129US | METHOD - Method Technologies Inc. | 5.1K | 4.1K | 3 |
| AS46572US | COWBOY-HOSTING - Cowboy Hosting LLC | 5.1K | 65.5K | 8 |
| AS7238US | MACROVISION-CORPORATION - Rovi Corporation | 5.1K | — | 13 |
| AS11472US | YOUR-TOWN-ONLINE - Your Town Online | 5.1K | 65.5K | 3 |
| AS14480US | ORANGEBURGCOUNTYBB-SC - County of Orangeburg | 5.1K | — | 11 |
| AS64227US | CTC-AS2 - CONSOLIDATED TELEPHONE COMPANY | 5.1K | 65.5K | 7 |