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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) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,766 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,308 |
| 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.
32,243 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| 512 |
| — |
| 2 |
| AS40666US | SABIC-INNOVATIVE-PLASTICS-US-LLC - SABIC INNOVATIVE PLASTICS US, LLC | 512 | — | 2 |
| AS1544US | DNIC-ASBLK-01534-01546 - Headquarters, USAISC | 512 | — | 2 |
| AS13971US | FDS-AS-NY - HedgeServ Corporation | 512 | — | 2 |
| AS401587US | TEXTNOW-CUST-01 - TextNow Inc. | 512 | 514 | 6 |
| AS17038US | FLORI-62 - FTD | 512 | — | 2 |
| AS398193US | GCMCO - G. C. M. COMPUTERS, INC. | 512 | — | 2 |
| AS40067US | NEWEGG - Newegg Inc. | 512 | — | 2 |
| AS402174US | SHIELDITSM-01 - Shield ITSM, LLC | 512 | 2 | 4 |
| AS395695US | TEGNA-KPNX - TEGNA Inc. | 512 | — | 2 |
| AS393846US | ROUTER12-NETWORKS-UN - Router12 Networks LLC | 512 | — | 2 |
| AS27149US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 512 | — | 2 |
| AS393376US | DYNAMICEDGE - Dynamic Edge, Inc. | 512 | — | 1 |
| AS54820US | DN-TX - Diebold Nixdorf, Incorporated | 512 | — | 2 |
| AS63263US | RETS-NA-GCC - RELX inc. | 512 | — | 2 |
| AS19810US | ASNBLK-VTLA2 - NTT Global Networks Incorporated | 512 | — | 2 |
| AS53489US | TGNA-WBIR - TEGNA Inc. | 512 | — | 2 |
| AS64255US | EM-888 - Intercontinental Exchange, Inc. | 512 | — | 2 |
| AS53483US | RSP - ReSource Pro, LLC | 512 | — | 2 |
| AS1446US | TPC-1 - Tutor Perini Corporation | 512 | — | 2 |
| AS53763US | LAKESIDE - Lakeside Network, LLC | 512 | 256 | 3 |
| AS54766US | DC-ASN-01 - Hilton Resorts Corporation | 512 | — | 2 |
| AS63329US | MARCUM-LLP - Marcum LLP | 512 | — | 2 |
| AS19622US | GHI301PENOBSCOT - Genomic Health, Inc. | 512 | — | 2 |
| AS399658US | CH3 - Guaranteed Rate Inc | 512 | — | 2 |
| AS5790US | NETMARKET - Trilegiant Corporation | 512 | — | 2 |
| AS39990US | BCG - Boulder County Government | 512 | — | 2 |
| AS36572US | WPBF-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS32642US | NICMAN - NICMAN GROUP LLC | 512 | — | 2 |
| AS54787US | MYRIAD-SSF-01 - Myriad Genetics, Inc. | 512 | — | 2 |
| AS40639US | KORBELINC - F Korbel & Bros Inc | 512 | — | 2 |
| AS36244US | SVEC - Shenandoah Valley Electric Cooperative | 512 | — | 1 |
| AS10985US | CURTIS-ASNUM - Curtis Instruments, Inc. | 512 | — | 2 |
| AS400828US | HCDL-ATLANTA-DATA-CENTER - H5 Data Centers | 512 | 4.1K | 3 |
| AS399795US | INFINITY-TECH-KC1 - Infinity Technology Services LLC | 512 | — | 1 |
| AS33419US | TRIBAL-FUSION - Exponential Interactive, Inc. | 512 | — | 2 |
| AS36003US | NOS-NOG - NOS Network Operations Group | 512 | 65.5K | 3 |
| AS400349US | BOLD-HOWARDU - Apogee Telecom Inc. | 512 | — | 1 |
| AS1803US | COGENT-1803 - Cogent Communications, LLC | 512 | — | 2 |
| AS393787US | CEG - Citizens Energy Group | 512 | — | 2 |
| AS23198US | RRTS - Roadrunner Transportation Services, Inc. | 512 | — | 2 |
| AS27634US | MICRODG-AS - Microdynamics Corporation | 512 | — | 2 |
| AS1857US | DISN-PILOTNET3 - RTX BBN Technologies, Inc. | 512 | — | 2 |
| AS538US | DNIC-AS-00538 - Headquarters, USAISC | 512 | — | 2 |
| AS54287US | ASXCIE-SJC - Axcient, Inc | 512 | — | 1 |
| AS18577US | MIC-64 - ManTech International Corporation | 512 | — | 2 |
| AS27533US | OMGEO - Depository Trust & Clearing Corporation | 512 | — | 2 |