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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. | 218.1M | 24,718 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 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.
32,222 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 | 3,893 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,007 |
| AS701US | UUNET - Verizon Business | 43.6M | 997 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,395 |
| — |
| — |
| 0 |
| AS402383US | KUMREZ - Kumrez | — | — | 0 |
| AS402451US | ZOOM-CORPNET-PEER-01 - Zoom | — | — | 0 |
| AS402457US | KCITL-US-AS - KENYU | — | — | 0 |
| AS402496US | REDDOT-BGP - Red | — | — | 0 |
| AS402507US | NETWORKOLOGY - Networkology | — | — | 0 |
| AS402513US | AIRWAVE-AS - Airwave | — | — | 0 |
| AS402575US | JMT-HVMD - Johnson, | — | — | 0 |
| AS402576US | PITL2-UA-AS - PRIMEUNITY | — | — | 0 |
| AS402589US | SYNIAC - Syniac | — | — | 0 |
| AS402606US | CHRISTIES-INC-ASN-01 - CHRISTIE'S | — | — | 0 |
| AS402662US | SEERAPPSASN1 - SeerApps | — | — | 0 |
| AS402685US | NEBIUS-NA-SOUTH - Nebius | — | — | 0 |
| AS402690US | PCSD25 - Pocatello | — | — | 0 |
| AS402697US | IMTX-01 - IMTX | — | — | 0 |
| AS402724US | ZYNTY - Zynty | — | — | 0 |
| AS402808US | GAI-WINDSOR-AS01 - GlobalAI | — | — | 0 |
| AS402861US | SL-AS-1 - StratusLIVE, | — | — | 0 |
| AS402878US | GENESYS-CLOUD-00 - Genesys | — | — | 0 |
| AS402887US | GENESYS-CLOUD-00 - Genesys | — | — | 0 |
| AS402893US | GENESYS-CLOUD-00 - Genesys | — | — | 0 |
| AS402916US | NIENBO - Nienbo | — | — | 0 |
| AS402925US | ZENTRO-INTERNET-FLORIDA - Everywhere | — | — | 0 |
| AS402926US | ZENTRO-INTERNET-TEXAS - Everywhere | — | — | 0 |
| AS402930US | ATHENS - Technical | — | — | 0 |
| AS402989US | BMWOODS-01 - Brandermill | — | — | 0 |
| AS15US | NET-DYNAMICS-EXP - DYNAMICS | — | — | 0 |
| AS132US | WPAFB-CSD-NET-AS - Air Force Systems Networking | — | — | 0 |
| AS163US | IBM-RESEARCH-AS - IBM | — | — | 0 |
| AS179US | UMICH-AS-3 - University of Michigan | — | — | 0 |
| AS180US | UMICH-AS-4 - University of Michigan | — | — | 0 |
| AS183US | MERIT-AS-3 - Merit Network Inc. | — | — | 0 |
| AS204US | PSCNET-AS - Pittsburgh Supercomputing Center | — | — | 0 |
| AS253US | NTTA-253 - NTT America, Inc. | — | — | 0 |
| AS387US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS403US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS440US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS472US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS479US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS480US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS522US | AFSC-SSD-AS - Air Force Systems Networking | — | — | 0 |
| AS536US | DNIC-AS-00536 - Headquarters, USAISC | — | — | 0 |
| AS560US | LVLT-560 - Level 3 Parent, LLC | — | — | 0 |
| AS617US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | — | — | 0 |
| AS620US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | — | — | 0 |
| AS677US | ASU-AS - Arizona State University | — | — | 0 |
| AS733US | AFCONC-BLOCK2-AS - Air Force Systems Networking | — | — | 0 |