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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,661 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 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 | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,490 |
| DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) |
| — |
| — |
| 0 |
| AS5220US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5239US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5311US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5321US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5324US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5352US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5370US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5749US | RP - Peets Coffee & Tea | — | — | 0 |
| AS5770US | EMPLINK-AS - EMPaC International Corp. | — | — | 0 |
| AS5808US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5828US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5843US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5846US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5908US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5921US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5931US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5940US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5945US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5975US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5981US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5984US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5990US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5999US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS6054US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS6101US | TAC-NET - The Atlanta Connection | — | — | 0 |
| AS6117US | SJMERCURY - San Jose Mercury News | — | — | 0 |
| AS6179US | WESTWOOD - Westwood Studios | — | — | 0 |
| AS6197US | BATI-ATL - BellSouth Network Solutions, Inc | — | — | 0 |
| AS6214US | ANET-04 - Interactive Network Systems Inc. | — | — | 0 |
| AS6263US | NDIN - State of North Dakota, Information Technology Department | — | — | 0 |
| AS6320US | FUSEDNETWORKS-AS GTT Communications Inc. | — | — | 0 |
| AS6321US | EATEL - REV | — | — | 0 |
| AS6330US | WORLDWIDE-AS - Worldwide Communications | — | — | 0 |
| AS6355US | FRANK-RUSSELL-COMPANY - Russell Investments | — | — | 0 |
| AS6385US | BELLSOUTH-NET-BLK - AT&T Enterprises, LLC | — | — | 0 |
| AS6455US | TOMCO - Tomco Systems, Inc. | — | — | 0 |
| AS6476US | MIWORLD - Micro-Integration Corporation | — | — | 0 |
| AS6477US | DIRECTMEDIA-AS - Direct Media, Inc. | — | — | 0 |
| AS6489US | INOW-AS - Network Solutions, Inc. (INOW-DOM) | — | — | 0 |
| AS6577US | WEBEXTBD - Cisco Webex LLC | — | — | 0 |
| AS6594US | RISE-IDAHO - JAB Wireless, INC. | — | — | 0 |
| AS6610US | INTERSTATE - Interstate Networking Corporation | — | — | 0 |
| AS6613US | DIGITAL-MEDIA - Digital Media Group, Inc. | — | — | 0 |
| AS6960US | DTS-INTER-AMER - Diplomatic Telecommunications Services | — | — | 0 |
| AS6975US | LEX2 - Lexington County School District | — | — | 0 |
| AS7023US | NAN - INTERNEXUS, LLC | — | — | 0 |