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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.1M | 21,094 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 638 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,247 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 398 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,709 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,959 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,423 |
| DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) |
| — |
| — |
| 0 |
| AS5851US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5882US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5886US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5892US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5914US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5922US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5937US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS6019US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS6044US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS6052US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS6053US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS6094US | GRAPEVINEINC - GrapeVine Interactive, Inc. | — | — | 0 |
| AS6110US | BOXTOP - BoxTop Entertainment | — | — | 0 |
| AS6123US | WEBPROS-ASN-1 - Web Professionals | — | — | 0 |
| AS6164US | NET66UU - Altafiber | — | — | 0 |
| AS6178US | INLINK - INLINK | — | — | 0 |
| AS6225US | CENTURYLINK-LEGACY-QWEST-PROJECT-LION1 - CenturyLink Communications, LLC | — | — | 0 |
| AS6249US | RCN-AS3 - RCN | — | — | 0 |
| AS6294US | CTEKUSA - Compu-Tek International | — | — | 0 |
| AS6316US | AS-PAETEC-NET - Windstream Communications LLC | — | — | 0 |
| AS6344US | VALUENET - Value Net Internetworking Services, Inc. | — | — | 0 |
| AS6361US | NTEGRATED-SOLUTIONS - Ntegrated Solutions | — | — | 0 |
| AS6367US | CENTURYLINK-LEGACY-EMBARQ-KLLN - CenturyLink Communications, LLC | — | — | 0 |
| AS6383US | BELLSOUTH-NET-BLK - AT&T Enterprises, LLC | — | — | 0 |
| AS6396US | COASTALNET-ASN - Global Information Exchange Corp | — | — | 0 |
| AS6410US | ASICOM - ASI Communications, Inc. | — | — | 0 |
| AS6411US | INSWEB - Strategic Concepts Corporation | — | — | 0 |
| AS6466US | ARPA-6466 - Micro Advantage, Inc | — | — | 0 |
| AS6523US | NETLINK207 - Net-Link Solutions | — | — | 0 |
| AS6526US | MAVERICK-BBS - King Communications | — | — | 0 |
| AS6549US | VIEWPOINTDATALABSASN - Viewpoint DataLabs Int'l Inc. | — | — | 0 |
| AS6607US | HOMENET - Homenet Communications, Inc. | — | — | 0 |
| AS6617US | PBB-MY - Information Management Systems | — | — | 0 |
| AS6634US | WTCI - Western Tele_Communications, Inc. | — | — | 0 |
| AS6640US | CENTURYLINK-TIER3-CLOUD - CenturyLink Communications, LLC | — | — | 0 |
| AS6644US | PARSECWEB-AS - PARSEC | — | — | 0 |
| AS6964US | DTS-NEAR-EAST - Diplomatic Telecommunications Services | — | — | 0 |
| AS6992US | NETSCAPE-AS - Yahoo Holdings Inc. | — | — | 0 |
| AS7012US | AS7012 - JMC Capital, LLC | — | — | 0 |
| AS7044US | CSACNETWORKS - Computer Systems Authority | — | — | 0 |
| AS7095US | NETUSA - Network Internet Services | — | — | 0 |
| AS7119US | FORSYTHCOUNTY - Forsyth County MIS | — | — | 0 |
| AS7139US | BIZTRAVELCAM - Biztravel.com | — | — | 0 |
| AS7189US | DATALINK - Insight Direct USA, Inc. | — | — | 0 |
| AS7192US | VRIS-7192 - Verizon Business | — | — | 0 |
| AS7223US | CSRLINK - CSRLink, Inc. | — | — | 0 |