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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 |
| AS20067US | NAS-GHENT - North American Stainless | 256 | — | 1 |
| AS25727US | RBNA-HQ - RED BULL NORTH AMERICA, INC. | 256 | — | 1 |
| AS20109US | DC09 - DC09, LLC. | 256 | — | 1 |
| AS1492US | DNIC-ASBLK-01492-01493 - Headquarters, USAISC | 256 | — | 1 |
| AS62803US | UTDAS01 - UPTODATE, Inc. | 256 | — | 1 |
| AS54476US | EMGTELECOM - VOX CONNECT INC | 256 | — | 1 |
| AS396274US | SVGKC1 - Spring Venture Group LLC | 256 | — | 1 |
| AS398439US | GUEST-CHOICE-TV - GUEST CHOICE TV LLC | 256 | 65.5K | 2 |
| AS394878US | OLDREPUBLICTITLEASOP2 - OLD REPUBLIC NATIONAL TITLE INSURANCE CO. | 256 | — | 1 |
| AS54970US | NORTHERN-AIR-CARGO - NORTHERN AIR CARGO | 256 | — | 1 |
| AS399796US | BERNINA - Bernina of America, LLC | 256 | — | 1 |
| AS399442US | OLELO-COMMUNITY-MEDIA-01 - OLELO COMMUNITY MEDIA | 256 | — | 1 |
| AS26117US | UNION-POWER-COOPERATIVE - Union Power | 256 | — | 1 |
| AS13592US | CROWNCASTLE-AS13592 - Crown Castle Fiber LLC | 256 | — | 1 |
| AS401675US | EAI-ASN - Empire AI | 256 | 256 | 2 |
| AS27019US | BALLNET - Ball Horticultural Company | 256 | — | 1 |
| AS399978US | COF-ASN-01 - City of Franklin | 256 | — | 1 |
| AS397656US | CHI01-US-CENTRIEN-COM - Centrien | 256 | — | 1 |
| AS399737US | ETHERWARE - Etherware Solutions LLC | 256 | — | 1 |
| AS33560US | LINCOLNINVESTMENTPLANNING - Lincoln Investment Planning, LLC. | 256 | — | 1 |
| AS21934US | VITAC - VITAC Corporation | 256 | — | 1 |
| AS36746US | SYMQUEST-SB-NET - SymQuest Group. Inc | 256 | — | 1 |
| AS398162US | PANOLA-COLLEGE - Panola College | 256 | — | 1 |
| AS393452US | FSST - Flandreau Santee Sioux Tribe | 256 | — | 1 |
| AS400002US | LIFENET-INC - LifeNet, Inc. | 256 | — | 1 |
| AS40572US | SEA-DC - Pemco Mutual Insurance Company | 256 | — | 1 |
| AS54717US | CLAREMONT-COMPUTER-NETWORK - Claremont Computer Network LLC | 256 | — | 1 |
| AS394235US | MVCSKYNET - Many Ventures Compute L.L.C. | 256 | — | 1 |
| AS399496US | SYBT - STOCK YARDS BANK AND TRUST COMPANY | 256 | — | 1 |
| AS400901US | KLG-DATACENTER - Keller Logistics Group, INC | 256 | — | 1 |
| AS26698US | PSA-INC - PARAMOUNT SOFTWARE ASSOCIATES, INC. | 256 | — | 1 |
| AS15268US | MDARCHIVES - Maryland State Archives | 256 | — | 1 |
| AS401151US | MCOR-AS - Marion County | 256 | — | 1 |
| AS398138US | CTG-IMDC-01 - Ciegate Technologies | 256 | — | 1 |
| AS17367US | 382-COM-NY - 382 Communications Corporation | 256 | — | 1 |
| AS393517US | SFDC-TABLEAU - Salesforce, Inc. | 256 | — | 1 |
| AS36055US | MARKET-STRATEGIES-INTERNATIONAL - MARKET STRATEGIES | 256 | — | 1 |
| AS54336US | HANSON-BRIDGETT-LLP - Hanson Bridgett LLP | 256 | — | 1 |
| AS53678US | OFFICERING-ASH - OFFICERING LLC | 256 | — | 1 |
| AS54440US | PCL-ASN1 - Pamir Consulting LLC | 256 | — | 1 |
| AS16081US | AS16081 Kyndryl, Inc. | 256 | — | 1 |
| AS30291US | DFMC - Delmarva Foundation for Medical Care, Inc. | 256 | — | 1 |
| AS62830US | RIOT-CORP-SVCS - RiotGames | 256 | — | 1 |
| AS18445US | POLYONE-CORPORATION - PolyOne Corporation | 256 | — | 1 |
| AS30208US | CASSCLAY - Cass Clay Wireless | 256 | — | 1 |
| AS1099US | WIFIBER-SPO-01 - WIFIBER | 256 | — | 1 |