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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 |
| 256 |
| — |
| 1 |
| AS63078US | ADS-AS1 - A. Duda & Sons, Inc. | 256 | — | 1 |
| AS21643US | MWU-ASN - Midwestern University | 256 | — | 1 |
| AS401149US | EQUITYBANK-ASN - Equity Bank | 256 | — | 1 |
| AS31861US | WTAMU - West Texas A&M University | 256 | — | 1 |
| AS400622US | OPTICWISE-US - OpticWise, Inc. | 256 | — | 1 |
| AS22712US | POSHY1 - POSHMARK Inc. | 256 | — | 1 |
| AS398064US | MDUSOLUTIONS-ASN-01 - MDU Solutions, LLC | 256 | — | 1 |
| AS401548US | HCDL-OMAHA-DATA-CENTER - H5 Data Centers | 256 | 256 | 2 |
| AS395745US | SQPT-OPS-LLC-AS - SquarePoint Ops LLC | 256 | — | 1 |
| AS22596US | CHR-823 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS395599US | ALDR2016 - Alder | 256 | — | 1 |
| AS393652US | CSB-YORK - Cornerstone Bank | 256 | — | 1 |
| AS396409US | TKG-AS01 - KRAFT GROUP LLC | 256 | — | 1 |
| AS402045US | NOCKYRENTAL - NOCKYRENTAL LLC | 256 | — | 1 |
| AS55170US | LAYER2 - Layer 2 Networks, Inc. | 256 | — | 1 |
| AS402137US | AMAYA-CLOUD-01 - AmayaCloud Inc | 256 | — | 1 |
| AS20479US | MCSO-PSC-1 - Monmouth County Sheriff's Office | 256 | — | 1 |
| AS14441US | NETWORK-SOLUTIONS-14441 - Network Solutions, LLC | 256 | — | 1 |
| AS33192US | NAIB - National Aquarium in Baltimore | 256 | — | 1 |
| AS396400US | OLATHE-KS - City of Olathe | 256 | — | 1 |
| AS62950US | STOF-ASN - Seminole Tribe of Florida | 256 | — | 1 |
| AS40680US | PROTOCOL - Protocol Labs | 256 | 1 | 2 |
| AS402602US | HFS-01 - Hyperforge | 256 | 1 | 2 |
| AS19922US | AS-OASIS - OASIS NETWORKS | 256 | — | 1 |
| AS46801US | RITAOHIO - Regional Income Tax Agency | 256 | — | 1 |
| AS402021US | MT-WILSON-OBSERVATORY - Mt. Wilson Observatory | 256 | — | 1 |
| AS395703US | OGDEN-CLINIC - Ogden Clinic Professional Corporation | 256 | — | 1 |
| AS211585US | MAIYUN Maiyun Zhang | 256 | 6 | 6 |
| AS53411US | CENTRAL-SERVICE-ASSOCIATION - Central Service Association | 256 | — | 1 |
| AS40674US | RTMSD - Rose Tree Media School District | 256 | — | 1 |
| AS30715US | Q9-AS-KML1 - Equinix, Inc. | 256 | — | 1 |
| AS397552US | NORTHEAST-DELTA-DENTAL - Northeast Delta Dental | 256 | — | 1 |
| AS32293US | TCW-AS-865 - The TCW Group, Inc. | 256 | — | 1 |
| AS398460US | MVLS-SALS - Southern Adirondack Library System | 256 | — | 1 |
| AS21914US | RXO-CORPORATE-SOLUTIONS - RXO Corporate Solutions, LLC | 256 | — | 1 |
| AS26264US | TVI-AS - TVI Inc | 256 | — | 1 |
| AS11163US | PLINK-OSIDE - Promptlink Communications Inc. | 256 | 1 | 2 |
| AS54837US | BSNOW-AS-01 - Butler Snow | 256 | — | 1 |
| AS12071US | NATIONWIDECPAS-LLC - Nationwide CPAs LLC | 256 | — | 1 |
| AS401899US | BAER-CONSULTING-2 - Baer Consulting, Incorporated | 256 | — | 1 |
| AS399106US | TERIDION2 - Teridion inc | 256 | — | 1 |
| AS46122US | DBCONTROLS - Digital Business Controls | 256 | — | 1 |
| AS396236US | MIMOKC - MIMO 5G Internet | 256 | — | 1 |
| AS401357US | SOLID-ROCK-NETWORK - Solid Rock Network LLC | 256 | 256 | 2 |
| AS401515US | BNY-INS-EME-HLW - The Bank of New York Mellon Corporation | 256 | — | 1 |
| AS401691US | ABM-859 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |