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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 | 23,695 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,300 |
| 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.
32,143 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,820 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,994 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,278 |
| 114.7K |
| 65.5K |
| 19 |
| AS54103US | MODMC-54103-AS - MOD Mission Critical, LLC | 114.4K | 5 | 440 |
| AS3762US | INSTINET-AS - Instinet | 113.7K | — | 69 |
| AS11995US | OHSU - Oregon Health & Science University | 113.4K | — | 8 |
| AS5009US | EATEL - REV | 112.9K | 65.5K | 18 |
| AS18558US | NETBLK-RCOEK - Riverside County Office of Education | 112.6K | 65.5K | 141 |
| AS2648US | NOAA-BOULDER - National Oceanic and Atmospheric Administration | 112.6K | 260 | 19 |
| AS4581US | SOCKET - Socket Holdings Corporation | 112.6K | — | 51 |
| AS23410US | NET-NASSAU-BOCES - Nassau County BOCES | 112.4K | — | 312 |
| AS11500US | MSOE-INTERNET - Milwaukee School of Engineering | 111.4K | — | 8 |
| AS53508US | CABLELYNX - Cablelynx | 110.8K | — | 109 |
| AS13614US | ALLWEST - All West Communications, Inc. | 110.8K | 65.5K | 33 |
| AS47007US | AS4-COLOAM - Colocation America Corporation | 110.3K | 1 | 396 |
| AS14361US | HOPONE-GLOBAL - HopOne Internet Corporation | 109.8K | 76 | 113 |
| AS32097US | WII - WholeSale Internet, Inc. | 109.8K | 65.5K | 52 |
| AS18712US | EVERFAST-KC - Everfast Fiber Networks LLC | 109.8K | 65.5K | 24 |
| AS3833US | WYOMING - wyoming.com | 109.6K | 65.5K | 226 |
| AS10310US | YAHOO-1 - Yahoo Holdings Inc. | 109.3K | 397.3K | 110 |
| AS22709US | NSTELCO - North State Telephone, LLC | 109.1K | 23.1M | 59 |
| AS5307US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | 109.1K | 1 | 57 |
| AS11123US | UIA - Ultimate Internet Access, Inc | 108.8K | 4.1K | 64 |
| AS401701US | COGNETCLOUD-2 - cognetcloud INC | 108.5K | — | 112 |
| AS11659US | KUMC - University of Kansas Medical Center | 108.3K | — | 8 |
| AS29848US | WCU - West Chester University of Pennsylvania | 108K | 131.1K | 9 |
| AS7227US | KPMGL-AS - KPMG LLP | 108K | — | 43 |
| AS6501US | SOUTHERNET - The Southern Company | 107.5K | — | 26 |
| AS398754US | COASTCONNECT-01 - CoastConnect LLC | 107K | — | 95 |
| AS10439US | CARINET - CariNet, Inc. | 106.8K | 65.5K | 7 |
| AS33692US | MACALE - Macalester College | 106.5K | — | 8 |
| AS18759US | SAV-AS - Georgia Southern University | 106.5K | — | 3 |
| AS26072US | FIRSTENERGY - FirstEnergy Corp. | 106.5K | 577 | 29 |
| AS20105US | URICHMOND - University of Richmond | 106.5K | — | 7 |
| AS13333US | CCI-PA-AS-1 - Fidium | 106.2K | 65.5K | 39 |
| AS6984US | NYNEX-AS - Verizon Business | 106.2K | 15 | 89 |
| AS21565US | AS21565 - Horry Telephone Cooperative, Inc. | 105.5K | 65.8K | 415 |
| AS26585US | SIAC-SFTI - Securities Industry Automation Corporation | 105.5K | — | 107 |
| AS25921US | LUS-FIBER-LCG - LUS Fiber | 104.7K | — | 38 |
| AS209242US | CLOUDFLARESPECTRUM Cloudflare London, LLC | 104.7K | 262.2K | 306 |
| AS801US | AMAZON-LEO - Amazon Technologies Inc. | 104.4K | 11.8K | 134 |
| AS2939US | SCAROLINA-AS - State of South Carolina | 103.7K | — | 20 |
| AS55002US | DEFENSE-NET - F5, Inc. | 103.7K | 65.8K | 180 |
| AS13807US | GREAT-PLAINS-COMMUNICATIONS - Great Plains Communications LLC | 102.9K | 278.8K | 105 |
| AS23316US | BAI-IP-SERVICES - Bel Air Internet, LLC | 102.4K | 256 | 64 |
| AS33182US | DIMENOC - HostDime.com, Inc. | 101.4K | 98.4K | 90 |
| AS2685US | ATGS-MMD-AS - AT&T Enterprises, LLC | 101.4K | 65.5K | 39 |
| AS395610US | NXST-AS395610 - Nexstar Broadcasting Inc. | 101.1K | — | 131 |
| AS16669US | APPLIED-MATERIALS - Applied Materials | 100.9K | — | 15 |