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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 | 25,247 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| 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.
32,189 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 | 3,901 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.9M | 2,010 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.5M | 4,222 |
| 2.6K |
| — |
| 2 |
| AS396461US | NATEL-ASN1 - Liberty Communications | 2.6K | — | 10 |
| AS12147US | DFS-RWD - Discover Financial Services | 2.6K | — | 10 |
| AS63103US | OCF-AS - Ochsner Clinic Foundation | 2.6K | — | 8 |
| AS40050US | BRNL - Blue Rim Networks, LLC | 2.6K | 32.8K | 10 |
| AS12105US | GCN-001 - Global Enterprise Solutions, Inc. | 2.6K | — | 2 |
| AS21615US | CEBRIDGE - Cebridge Connections | 2.6K | — | 9 |
| AS25878US | QNST-DC01 - Quinstreet, Inc. | 2.6K | — | 7 |
| AS29698US | LAKESHOREFIBER - Lakeshore Fiber LLC | 2.6K | 65.5K | 3 |
| AS36410US | VHAINC-IPNET - Vizient, Inc. | 2.6K | — | 7 |
| AS13666US | VRIS-AS-BLOCK - Verizon Business | 2.6K | 1 | 10 |
| AS32393US | BDN - Brown Dog Networks | 2.6K | — | 4 |
| AS21US | RAND - The RAND Corporation | 2.6K | — | 10 |
| AS36844US | SAWS---SAN-ANTONIO-WATER-SYSTEM - San Antonio Water System | 2.6K | — | 10 |
| AS393258US | SAFETYNET1 - Safety NetAccess, Inc. | 2.6K | — | 2 |
| AS393437US | KLAYER - KLAYER LLC | 2.6K | — | 10 |
| AS11805US | ENNWISE-AS - Ennwise | 2.6K | 2 | 9 |
| AS36201US | B2X-ONLINE-WISP-ASN - B2X Online Inc | 2.6K | — | 10 |
| AS11070US | META-AS - Metanet Communications, Inc. | 2.6K | — | 10 |
| AS400779US | ONTARIONET-01 - OntarioNet | 2.6K | — | 4 |
| AS394723US | FCS-AS-1 - Fulton County Schools | 2.6K | — | 3 |
| AS393294US | MEGATEL-NETCOM - Megatel Netcom Corporation | 2.6K | 257 | 12 |
| AS397909US | EGUSD-01 - Elk Grove Unified School District | 2.6K | — | 10 |
| AS402363US | AEJ-01 - KEYSTONE | 2.6K | — | 5 |
| AS1858US | DISN-PILOTNET4 - RTX BBN Technologies, Inc. | 2.6K | — | 3 |
| AS393526US | NTS-BORGER-01 - Vexus Fiber | 2.6K | — | 6 |
| AS29967US | ARAMARK-NS - Aramark Services, Inc. | 2.6K | — | 10 |
| AS20085US | UAKRON - The University of Akron | 2.6K | — | 5 |
| AS40593US | CCSI-AS - Cloud Compliance Solutions | 2.6K | — | 10 |
| AS397790US | IMU - Indianola Municipal Utilities | 2.6K | 65.5K | 5 |
| AS398296US | DIGITALSYSTEM - Digitalsystem Technology Inc. | 2.6K | 4.1K | 5 |
| AS40959US | HOSTMASTER - City and County of Denver - Denver International Airport | 2.6K | — | 9 |
| AS397370US | ACADIANA-WIRELESS - ACADIANA WIRELESS LLC | 2.6K | — | 6 |
| AS3576US | AS-HODGSON-RUSS-NET - Hodgson Russ LLP | 2.6K | — | 7 |
| AS393821US | LISMORE-COOPERATIVE-TELEPHONE - Lismore Cooperative Telephone Company | 2.6K | — | 2 |
| AS20234US | HNTB - HNTB CORPORATION | 2.6K | — | 6 |
| AS393434US | AL-DC-US - Air Link Networks | 2.6K | 4.1K | 5 |
| AS19606US | NLSNMEDIA - THE NIELSEN COMPANY (US), LLC | 2.6K | — | 9 |
| AS3061US | PDNPVD-1 - ProvDotNet LLC | 2.6K | — | 3 |
| AS63104US | MOHAWK-NETWORKS - Mohawk Networks LLC | 2.6K | — | 3 |
| AS46851US | TURNITIN - Turnitin LLC | 2.6K | — | 3 |
| AS22181US | IVNET - IV NET, LLP | 2.6K | — | 4 |
| AS40828US | THE-RMR-GROUP - The RMR Group LLC | 2.6K | — | 3 |
| AS14610US | INTEGRAL - Integral Development Corp. | 2.6K | — | 10 |
| AS33489US | COMCAST-33489 - Comcast Cable Communications, LLC | 2.6K | 34 | 44 |
| AS6223US | CENTURYLINK-MTIPS1-STN - CenturyLink Communications, LLC | 2.6K | 17 | 5 |
| AS22970US | MAINETECHCOLLEGESYS - Maine Technical College System | 2.6K | — | 10 |