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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 210.9M | 21,017 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,219 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 228 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 368 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 48M | 3,585 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,932 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,534 |
| 5.4K |
| — |
| 13 |
| AS399296US | RD-BM - Rackdog, LLC | 5.4K | 1 | 21 |
| AS3465US | JBHUNT - J. B. Hunt Transport Inc. | 5.4K | — | 8 |
| AS1416US | CHICAGO-PUBLIC-SCHOOLS - Chicago Public Schools | 5.4K | — | 10 |
| AS46979US | MCTC-INTERNET - Madison County Telephone Company | 5.1K | — | 3 |
| AS31777US | SPARCC-AS - Stark Portage Area Computer Consortium | 5.1K | — | 5 |
| AS18719US | TSRSOLUTIONS - TSR Solutions, Inc. | 5.1K | — | 5 |
| AS401479US | DBM-ASN-KC - Database Mart LLC | 5.1K | — | 2 |
| AS399150US | ISPEXCHANGECORP - ispexchangecorp | 5.1K | — | 5 |
| AS39938US | RCW - River Canyon Wireless | 5.1K | — | 20 |
| AS7238US | MACROVISION-CORPORATION - Rovi Corporation | 5.1K | — | 13 |
| AS17004US | BROADBANDONDEMAND - Kentucky Wimax | 5.1K | — | 2 |
| AS4868US | PIONEER - Pioneer Hi-Bred International, Inc. | 5.1K | — | 14 |
| AS46890US | 3COM-NET-ROUTER-AS46890 - 3Com Net Router | 5.1K | — | 13 |
| AS22881US | USBANCORP-2 - U.S. BANCORP | 5.1K | — | 6 |
| AS32442US | USMNSTCMARCO01 - Marco Technologies LLC | 5.1K | — | 4 |
| AS398885US | AERWAVE - Aerwave, Inc. | 5.1K | 44 | 64 |
| AS10302US | NEGIA-NET - SNAPPYDSL.NET | 5.1K | — | 2 |
| AS26111US | EU-FTTH - Erwin Utilities | 5.1K | — | 8 |
| AS20329US | DIAMONDNET - Sallisaw Municipal Authority | 5.1K | — | 2 |
| AS10632US | PSE-AS - Puget Sound Energy | 5.1K | — | 12 |
| AS11624US | AS-COLLINS - COLLINS COMMUNICATIONS INC | 5.1K | — | 20 |
| AS13943US | YK-COMMUNICATIONS - Y K Communications, LTD | 5.1K | 65.5K | 4 |
| AS13431US | MILLENNIUM-AS - Millennium Partners, L.P. | 5.1K | — | 17 |
| AS17204US | AKAMAI-NOMINUM-ASN - Akamai Technologies, Inc. | 5.1K | 1 | 3 |
| AS397332US | ANACORTES-MUNICIPAL-ISP - City of Anacortes | 5.1K | 4.1K | 6 |
| AS53428US | KCS-US-NEBIUS - Nebius Inc. | 5.1K | 16 | 10 |
| AS54806US | LRMCOM1 - Lrm-Com, Inc. | 5.1K | — | 13 |
| AS30455US | HOSTVENOM-LLC - HostVenom LLC | 5.1K | 4.1K | 18 |
| AS397710US | HARMONYTELCO - MiBroadband | 5.1K | — | 5 |
| AS395652US | COUNTYOFBERGEN - County of Bergen | 5.1K | — | 6 |
| AS62827US | THALES-DIS-COO-DFW-01 - Thales DIS USA, Inc. | 5.1K | 1 | 15 |
| AS26742US | MAXNOC-ASN - MaxNOC Communications, LLC. | 5.1K | — | 2 |
| AS4996US | SBI - Citigroup Inc. | 5.1K | — | 20 |
| AS394968US | QTS-CHI - Quality Technology Services, LLC | 5.1K | 65.5K | 7 |
| AS46708US | ENVOI - Allied International Corp of VA. | 5.1K | — | 2 |
| AS393568US | ITT-CORPORATION - ITT Corporation | 5.1K | — | 13 |
| AS40539US | PROHCI - Hosting Consulting, Inc | 5.1K | — | 7 |
| AS25787US | ROWE-NETWORKS - Rowe Wireless Networks LLC | 5.1K | 65.5K | 12 |
| AS14464US | RINET - Rhode Island Network for Educ. Technology | 5.1K | — | 5 |
| AS19157US | CHARTER-19157-DC - Charter Communications LLC | 5.1K | — | 12 |
| AS30491US | CROWELLP - Crowe LLP | 5.1K | — | 20 |
| AS5702US | GALAXY - Galaxy Networks (division of Kolacom, Inc.) | 5.1K | — | 3 |
| AS399606US | IMAGINGBAY - Imaging Bay, Inc. | 5.1K | 4 | 24 |
| AS23423US | WASATCH BROADBAND - Wasatch Broadband | 5.1K | 65.5K | 21 |
| AS32385US | INTELEPEER-US-BACKBONE - IntelePeer, Inc. | 5.1K | — | 13 |
| AS22360US | REDHAT-2 - Red Hat, Inc. | 5.1K | 2 | 6 |