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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) | 227.4M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 217.9M | 24,372 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,322 |
| 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.
32,235 autonomous systems registered to United States. Click an AS for detail.
| 72.9M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,906 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.9M | 2,006 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.7M | 4,275 |
| — |
| — |
| 0 |
| AS6986US | ANGEL-NETWORKS - Angel Networks | — | — | 0 |
| AS7031US | MOONLIGHT-AS - Moonlight Media, Inc. | — | — | 0 |
| AS7066US | VATECH-NET - Virginia Polytechnic Institute and State Univ. | — | — | 0 |
| AS7096US | DSOURCE - Data Source, L.L.C. | — | — | 0 |
| AS7101US | SANDBOX - Sandbox Entertainment Corporation | — | — | 0 |
| AS7111US | ASPEN-SYSTEMS - Aspen Systems Corporation | — | — | 0 |
| AS7141US | AUS-AS - Koltai Inc | — | — | 0 |
| AS7142US | AZSTARNET - TNI PARTNERS | — | — | 0 |
| AS7200US | G1ENGLAB - Global One Private Systems | — | — | 0 |
| AS7279US | AMOSPRESS - Amos Press, Inc. | — | — | 0 |
| AS7283US | THERIVER - THE RIVER / INTERNET ACCESS CO | — | — | 0 |
| AS7304US | THECIA - Complete Internet Access, Inc | — | — | 0 |
| AS7375US | HULANET - Hula Net, Inc | — | — | 0 |
| AS7401US | FWINET - Fort Wayne Internet, LLC | — | — | 0 |
| AS7433US | CYBERMAX - Cybermax Communications, Inc. | — | — | 0 |
| AS7737US | ASWELLNET - Aswell Corporation | — | — | 0 |
| AS7742US | DOITNOWDOTCOM - InternetNow, Inc. | — | — | 0 |
| AS7771US | AMULET - Amulet Software | — | — | 0 |
| AS7791US | EARLY - Early Access | — | — | 0 |
| AS7844US | OASIS - OASIS TECHNOLOGIES | — | — | 0 |
| AS7898US | DNA-ASN - Digital Network Associates | — | — | 0 |
| AS7933US | BORDERS-GROUP - Borders Group Inc. | — | — | 0 |
| AS7943US | TDS-SA-ISP - Trident Data Systems | — | — | 0 |
| AS7967US | SECUREDOC - Secure Document Systems, Inc. | — | — | 0 |
| AS7987US | CENTURYLINK-LEGACY-SAVVIS-RESERVED-IPADMIN - CenturyLink Communications, LLC | — | — | 0 |
| AS7991US | CENTURYLINK-LEGACY-SAVVIS-ASIA-TRANSIT - CenturyLink Communications, LLC | — | — | 0 |
| AS8063US | BELLSOUTH-NET-BLK3 - AT&T Enterprises, LLC | — | — | 0 |
| AS8114US | VRIS-8112-8115 - Verizon Business | — | — | 0 |
| AS8144US | WORLDNOWONLINE - WorldNow Online | — | — | 0 |
| AS10267US | GVI-AS - GlobalVision Systems, Inc | — | — | 0 |
| AS10313US | PEQUOT - Pequot Systems, Inc. | — | — | 0 |
| AS10332US | BROADBAND - MSHOW.com | — | — | 0 |
| AS10334US | NAVISITE-EAST - Navisite Internet Services | — | — | 0 |
| AS10337US | IBMAS400DIV - IBM AS/400 Division | — | — | 0 |
| AS10350US | NETSCHOOLS - NETSchools Corporation | — | — | 0 |
| AS10428US | CWV-NETWORKS - The College of West Virginia | — | — | 0 |
| AS10438US | BLUE-HWY - Information Systems, Inc. | — | — | 0 |
| AS10446US | AMIGO-NET - Zero Error Networks | — | — | 0 |
| AS10456US | ATT-DISCNET - AT&T Services, Inc. | — | — | 0 |
| AS10470US | ASN-PCORDER - pcOrder.com | — | — | 0 |
| AS10475US | TBAX-AS-2025 - Tampa Bay Access Exchange LLC | — | — | 0 |
| AS10515US | CLT-NIC - VeriSign Infrastructure & Operations | — | — | 0 |
| AS10522US | BLUESTAR - BlueStar Communications | — | — | 0 |
| AS10589US | HALNET - Houston Area League of PC Users, Inc. (HAL-PC) | — | — | 0 |
| AS10608US | ENS-INTERWEB - Enterprise Network Systems | — | — | 0 |
| AS10627US | CP-AS-AS10627 - Critical Path, LLC | — | — | 0 |