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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 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 | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| — |
| — |
| 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 |
| 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 |
| AS10656US | ECOL - Eau Claire Press Company | — | — | 0 |
| AS10663US | DISCOVERNET-ASN1 - DiscoverNet, Incorporated | — | — | 0 |
| AS10667US | FSIWEBS-NET1-AS - Fidelity National Information Services, Inc. | — | — | 0 |
| AS10766US | ASN-TAIS-CSE - Toshiba America Information Systems, CSE | — | — | 0 |
| AS10826US | CENTURYLINK-QC-MOE-PHOENIX - CenturyLink Communications, LLC | — | — | 0 |
| AS10854US | AIRMEDIA - AirMedia | — | — | 0 |
| AS11025US | COMCAST-HOUSTON - Comcast Cable Communications, LLC | — | — | 0 |
| AS11094US | RUTGERS-RBHS - Rutgers, The State University | — | — | 0 |
| AS11194US | MODMC-11194-AS - MOD Mission Critical, LLC | — | — | 0 |
| AS11324US | AS11324 - BRFHH SHREVEPORT, L.L.C. | — | — | 0 |
| AS11461US | XX - T-Mobile USA, Inc. | — | — | 0 |
| AS11535US | NET-UALNET-AS - United Airlines | — | — | 0 |
| AS11538US | CENTURYLINK-QC-MOE-SPOKANE - CenturyLink Communications, LLC | — | — | 0 |
| AS11551US | SINEP-BROADST-AS - Frontline Communications | — | — | 0 |
| AS11759US | SERVERIUM - Serverium Tech LLC | — | — | 0 |