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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,285 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,310 |
| 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.
32,244 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,000 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,356 |
| 1K |
| — |
| 3 |
| AS394031US | SOUTHSUBURBANCOLLEGEOFCOOKCOUNTY - South Suburban College of Cook County | 1K | — | 1 |
| AS393635US | AWT-CORP-001 - Area-Wide Technologies, Inc | 1K | 4.1K | 5 |
| AS19750US | AS-CRITEO - Criteo Corp. | 1K | 14 | 18 |
| AS25898US | FULL-SAIL-INC - Full Sail, Inc. | 1K | — | 4 |
| AS12134US | MTB - Manufacturers and Traders Trust Company | 1K | — | 4 |
| AS201573US | KANDYKSF Skyvera LLC | 1K | — | 4 |
| AS26452US | BRING-AS - BringCom, Inc. | 1K | — | 1 |
| AS36015US | MRHS - Maury Regional Hospital | 1K | — | 1 |
| AS17294US | BI-631 - Build io, Inc. | 1K | — | 1 |
| AS21519US | SBG-AS2 - Sinclair Broadcast Group, Inc. | 1K | — | 1 |
| AS402302US | HOSTMYAPPLE - HostMyApple Inc. | 1K | — | 1 |
| AS402510US | ESSYSS-NETWORK - Essyss | 1K | — | 4 |
| AS54135US | TGNA-WTLV - TEGNA Inc. | 1K | — | 4 |
| AS32484US | BOWTIE - Fontainebleau Las Vegas | 1K | 65.5K | 4 |
| AS397315US | REGION10-LEAP - Region 10 League for Economic Assistance and Planning, Inc. | 1K | — | 3 |
| AS30013US | PIXAR-AS - Pixar | 1K | 3 | 7 |
| AS401626US | NETIFACE-TORONTO - Netiface America, Inc. | 1K | 256 | 5 |
| AS62644US | NBCSN-DMZ - NBC Sports Network | 1K | — | 4 |
| AS21647US | LIGHTBOARD-SYRACUSE-IX - Lightboard Realty | 1K | 512 | 6 |
| AS33273US | CURRENT-HIGH-SPEED - Current Inc. | 1K | 256 | 2 |
| AS25794US | DPCLAX - Dairyland Power Cooperative | 1K | — | 4 |
| AS18500US | PACCAR - PACCAR INFORMATION TECHNOLOGY DIVISION | 1K | — | 3 |
| AS393912US | BEMIS-PUBAS1 - Bemis | 1K | — | 2 |
| AS53548US | ORCASONLINE1 - Orcas Online, Inc | 1K | — | 4 |
| AS25714US | KCSR-ASN - The Kansas City Southern Railway Co. | 1K | — | 3 |
| AS4867US | CBOE - Cboe | 1K | — | 4 |
| AS402579US | STSB-NET-FTTH - STS | 1K | — | 1 |
| AS204491US | TEKNOSOS TEKNOSOS LLC | 1K | — | 4 |
| AS401435US | CRWD-IT-NET-ASN - CrowdStrike, Inc. | 1K | — | 3 |
| AS3902US | GLAXOSMITHKLINE - GlaxoSmithKline | 1K | — | 4 |
| AS54549US | VIP-FIBER - City of Vallejo, A municipal corporation | 1K | 65.5K | 4 |
| AS36468US | INTELLIGENT-TECHNICAL-SOLUTIONS - Intelligent Technical Solutions | 1K | — | 1 |
| AS32877US | SKYWAYNETWORKS - Skyway Networks | 1K | — | 2 |
| AS31874US | LPS-4 - Black Knight IP Holding Company, LLC | 1K | — | 3 |
| AS398172US | SIRIUSXM-CV - Sirius XM Connected Vehicle Services Inc. | 1K | — | 4 |
| AS32478US | ITVOCAL - IT Vocal LLC | 1K | 4.1K | 2 |
| AS396216US | BRIDGEDBB-01 - Bridged Broadband, LLC | 1K | 6.1K | 5 |
| AS400423US | CATHOLIC-HEALTH - Catholic Health | 1K | — | 4 |
| AS46522US | COH - City of Henderson, Nevada | 1K | — | 1 |
| AS46099US | KHENET - Kaplan Higher Education Corporation | 1K | — | 1 |
| AS395478US | ROCKYMOUNTAININTERNET - ROCKY MOUNTAIN INTERNET INC | 1K | — | 1 |
| AS32520US | DN-OH1 - Diebold Nixdorf, Incorporated | 1K | — | 4 |
| AS22891US | STANDARDINSURANCE - Standard Insurance Company | 1K | — | 4 |
| AS26330US | AVFUEL-CORPORATION - Avfuel Corporation | 1K | — | 2 |
| AS399360US | R2UT-ASN-01 - R2 Unified Technologies | 1K | — | 4 |
| AS395451US | HOSTIT - HostIT Servers | 1K | — | 1 |