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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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. | 218.1M | 24,630 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 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.
32,219 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 | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 256 |
| — |
| 1 |
| AS53438US | VB-ASN-01 - Vantage Bank | 256 | — | 1 |
| AS394781US | RSD - Reading School District | 256 | 256 | 2 |
| AS393849US | PALOS-GARZA - Palos Garza Forwarding, LLC | 256 | — | 1 |
| AS25633US | DATAMATX-ATL - DATAMATX INC | 256 | — | 1 |
| AS63424US | APM-442 - ADVANTAGE DENTAL CLINICS | 256 | — | 1 |
| AS23880US | Yahoo-AEA - Internet content provider | 256 | 1 | 2 |
| AS399661US | INJ-LLC - INJ LLC | 256 | — | 1 |
| AS399536US | PROGRESSBIZ-BGP - Progress Business Systems, Inc. | 256 | — | 1 |
| AS395841US | TAMCLOUD - tamCloud, Inc. | 256 | 4.1K | 2 |
| AS395814US | WABASHVALLEYPOWERASSOC - Wabash Valley Power Association Inc. | 256 | — | 1 |
| AS21697US | AS21697 - AMES CONSTRUCTION INC. | 256 | — | 1 |
| AS397830US | CITY-OF-GLENDALE - City of Glendale | 256 | — | 1 |
| AS400474US | GHOSTFIBER - GhostFiber | 256 | 4.1K | 2 |
| AS21635US | WWCUSA - World Wide Communications USA Inc. | 256 | — | 1 |
| AS25973US | AS-GTT-25973 - PacketExchange, Inc | 256 | 1 | 2 |
| AS395549US | AEINSTEINCOM - Albert Einstein College Of Medicine Inc. | 256 | — | 1 |
| AS395302US | ADAMS-COUNTY-COLORADO - Adams County, Colorado | 256 | — | 1 |
| AS11819US | NF-SMITH-ASSOCIATES - Smith & Associates | 256 | — | 1 |
| AS62510US | NESATX - North East Independent School District | 256 | — | 1 |
| AS26336US | TFHD-INTERNET1 - Tahoe Forest Hospital District | 256 | — | 1 |
| AS3134US | USAID-ASN - U.S. Agency for International Development | 256 | — | 1 |
| AS17291US | MCMILLIN-SANANTONIO - McMillin Texas Homes, LLC | 256 | — | 1 |
| AS32213US | BLANK-ROME-LLP - BLANK ROME LLP | 256 | — | 1 |
| AS11494US | KELLOGGCC - Kellogg Community College | 256 | — | 1 |
| AS395728US | PHX-ASN - District Photo, Inc. | 256 | — | 1 |
| AS401066US | LOWPING-US - LowPing | 256 | 2 | 3 |
| AS20438US | AS-STOO-HQ - Stoo Networks LLC | 256 | — | 1 |
| AS32892US | SOTELCO-01 - Southern Telecommunications Company, LLC. | 256 | — | 1 |
| AS18860US | AS19876 - Berger Schatz LLP | 256 | — | 1 |
| AS402096US | NTRS-LD5-P1 - The Northern Trust Company | 256 | — | 1 |
| AS63180US | MTESC - STS Tire & Auto Centers | 256 | — | 1 |
| AS199745US | terrible terrible llc | 256 | 1 | 2 |
| AS398711US | QG-AS-1 - Quality Gold, Inc. | 256 | — | 1 |
| AS1508US | DNIC-AS-01508 - Headquarters, USAISC | 256 | 1 | 2 |
| AS40213US | TOOELECO - Tooele County | 256 | — | 1 |
| AS36587US | TRM-PJD-LP - Trumbull Corporation | 256 | — | 1 |
| AS4182US | MLSLI-2 - MLSListings inc. | 256 | — | 1 |
| AS16859US | NAPHCARE-INC - NaphCare, Inc. | 256 | — | 1 |
| AS11619US | ATS-INC - ANDERSON TRUCKING SERVICE, INC. | 256 | — | 1 |
| AS23540US | CMH-IX - CMH-IX | 256 | — | 1 |
| AS396457US | VIRGINIA-WESLEYAN-UNIVERSITY - Virginia Wesleyan University | 256 | — | 1 |
| AS399762US | BUCKEYE-CITYNET-01 - City of Buckeye | 256 | — | 1 |
| AS396267US | TAFT-STETTINIUS-HOLLISTER - Taft, Stettinius & Hollister, LLP | 256 | — | 1 |
| AS402183US | BEAZER-250 - BEAZER GENERAL SERVICES, INC. | 256 | — | 1 |
| AS398741US | AS-VERTEXLINK-01 - VertexLink Inc | 256 | 257 | 3 |
| AS401983US | BINGHAM-MEMORIAL-HOSPITAL - Bingham Memorial Hospital | 256 | 256 | 2 |