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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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. | 218M | 24,543 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,304 |
| 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.
32,174 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,884 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,999 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,345 |
| 256 |
| 256 |
| 2 |
| AS397522US | GO-DADDY-COM-LLC - GoDaddy.com, LLC | 256 | 1 | 2 |
| AS30208US | CASSCLAY - Cass Clay Wireless | 256 | — | 1 |
| AS393928US | HILLIARD-CITY-SCHOOLS-AS - Hilliard City School District | 256 | — | 1 |
| AS54059US | ITELLUS - Itelligence Inc. US | 256 | — | 1 |
| AS394571US | WATERSTONE - Waterstone Mortgage | 256 | — | 1 |
| AS40378US | NESSIT - Nessit, LLC | 256 | — | 1 |
| AS22991US | SPE-199-26-202 - SOCIETY OF PETROLEUM ENGINEERS (SPE), INC. | 256 | — | 1 |
| AS402809US | GUMMIPANTZEN - Gummipantzen | 256 | 65.5K | 2 |
| AS22214US | MEDELAINC - Medela Inc | 256 | — | 1 |
| AS395884US | TBR01 - Tampa Bay Rays Baseball, Ltd. | 256 | — | 1 |
| AS22294US | ROTECH-HEALTHCARE - ROTECH HEALTHCARE, INC | 256 | — | 1 |
| AS54556US | MCCALLIE-SCHOOL - McCallie School | 256 | — | 1 |
| AS394104US | WESTDATA - IPLOCKVPN.COM | 256 | — | 1 |
| AS21672US | CES-HQPA-01 - Customized Energy Solutions, Ltd. | 256 | — | 1 |
| AS30562US | SCARSDALE-SCHOOLS - Scarsdale Schools District | 256 | — | 1 |
| AS53663US | ABT-INET - ADAMS BANK & TRUST | 256 | — | 1 |
| AS54050US | GPMLIFE - Government Personnel Mutual Life Insurance Company | 256 | — | 1 |
| AS32777US | SMART-CITY-IXCC - SMART CITY NETWORKS, LIMITED PARTNERSHIP | 256 | — | 1 |
| AS393404US | DTSOLUTIONS-1 - Delval Technology Solutions LLC | 256 | — | 1 |
| AS40018US | DENDREON-DENDREON-PHARMACEUTICALS-LLC-US - Dendreon Pharmaceuticals LLC | 256 | — | 1 |
| AS53925US | CBWE-COMM-IMDCPHX1 - CBWE Communications, LLC | 256 | — | 1 |
| AS394693US | PLCU-NET - Point Loma Credit Union | 256 | — | 1 |
| AS395548US | HFCU-NET - Hughes Federal Credit Union | 256 | — | 1 |
| AS30205US | SECURESOCKET - SecureSocket, LLC | 256 | — | 1 |
| AS401002US | NM-NOC-CONN-01 - Bridgers & Paxton Consulting Engineers, Inc. | 256 | — | 1 |
| AS54443US | EP-ISD272 - Eden Prairie School District | 256 | — | 1 |
| AS397480US | NJ-JUDICIARY-AS-1 - State of New Jersey Judiciary | 256 | — | 1 |
| AS26117US | UNION-POWER-COOPERATIVE - Union Power | 256 | — | 1 |
| AS393538US | ARLP-OPSTECH - Alliance Coal, LLC | 256 | — | 1 |
| AS398841US | AVERITT-IP-BLOCK - Averitt Express, INC | 256 | — | 1 |
| AS54860US | SOUTHERN-ILLINOIS-HEALTHCARE - Southern Illinois Hospital Services | 256 | — | 1 |
| AS29788US | TELIANCE-COMMUNICATIONS - Teliance Communications Inc | 256 | — | 1 |
| AS400502US | XTENIT - Xtenit | 256 | — | 1 |
| AS53970US | SELMED-1 - Select Medical Corporation | 256 | — | 1 |
| AS53931US | TALQ-NET-01 - Talquin Electric Coop, Inc | 256 | — | 1 |
| AS398894US | PRSD - Pine-Richland School District | 256 | 1 | 2 |
| AS401252US | TOMBALLISD - Tomball Independent School District | 256 | — | 1 |
| AS46348US | FOSTER-ASN01 - Foster Poultry Farms | 256 | — | 1 |
| AS35918US | FCE-ASN - Forest City Enterprises, Inc. | 256 | — | 1 |
| AS13967US | BUYSEASONS - Buyseasons, Inc. | 256 | — | 1 |
| AS33709US | TENG-YUE-01 - Teng Yue Partners, LP | 256 | — | 1 |
| AS397718US | RICHLAND-BGP-01 - Richland County | 256 | — | 1 |
| AS395229US | TEMPLE-COLLEGE-TX - Temple College | 256 | — | 1 |
| AS397581US | MGS-EXIT-HUB - MIC GLOBAL SERVICES, LLC | 256 | — | 1 |
| AS31786US | ZOOMINGWORK-LLC - PloxHost | 256 | 2 | 3 |
| AS54047US | CAMERONASHLEY - Cameron Ashley Building Products, Inc. | 256 | — | 1 |