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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 | 25,270 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,323 |
| 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.
32,193 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 | 3,900 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.9M | 2,009 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.5M | 4,230 |
| 4.1K |
| 65.5K |
| 2 |
| AS400224US | TARLETON - Tarleton State University | 4.1K | — | 1 |
| AS54576US | RESTORE ASN 54576 FOR HOAG MEMORIAL HOSPITAL - Hoag Memorial Hospital Presbyterian | 4.1K | — | 11 |
| AS14585US | CIFNET - CIFNet, Inc. | 4.1K | 65.5K | 11 |
| AS63160US | KIRKLAND-ELLIS-CO - Kirkland & Ellis LLP | 4.1K | — | 1 |
| AS46094US | LEE-COLLEGE - Lee College | 4.1K | — | 1 |
| AS13939US | SWTJC - Southwest Texas Junior College | 4.1K | — | 1 |
| AS62633US | SERVERDIME-SERVERCHEAP-HOSTRUSH - HostRush | 4.1K | 514 | 20 |
| AS399054US | KAS-CABLE - K.A.S. Cable T.V., Inc. | 4.1K | — | 4 |
| AS27254US | ATCJET-NET - ATC COMMUNICATIONS | 4.1K | — | 1 |
| AS18465US | WORKDAY-01 - Workday, Inc. | 4.1K | — | 16 |
| AS22243US | CENTRACOMM - CentraComm Communications | 4.1K | — | 1 |
| AS26652US | AIRSTREAM-BNC - Airstream Communications, LLC | 4.1K | 65.5K | 2 |
| AS7258US | CATALOG-AS7258 - Webhero, Inc. | 4.1K | — | 1 |
| AS395657US | HOPLITE-ASN - Hoplite Industries, Inc. | 4.1K | — | 15 |
| AS46990US | ARCSERVE-01 - Arcserve | 4.1K | — | 5 |
| AS398313US | SFU - Saint Francis University | 4.1K | — | 1 |
| AS54457US | HCEC-HOUSTON-PRIMARY - Harris County Emergency Corps | 4.1K | — | 1 |
| AS30008US | COLOGUYS - ColoGuys, Inc. | 4.1K | — | 1 |
| AS399203US | TREPIC-NETWORKS-01 - TREPIC Networks LLC | 4.1K | 131.1K | 8 |
| AS16556US | TOTALCHOICE-HOSTING - TotalChoice Hosting, LLC | 4.1K | — | 3 |
| AS19197US | STEFANINI-INC - Stefanini, Inc. | 4.4K | — | 17 |
| AS46997US | NATOLAB - Black Mesa Corporation | 4.4K | 1.2K | 38 |
| AS46479US | PREFERRED-NETWORKS - Pyramid.Net | 4.4K | — | 5 |
| AS399597US | BOLD-WJC - Apogee Telecom Inc. | 4.4K | 1 | 3 |
| AS53684US | CWAS02 - Centre WISP Venture Company | 4.4K | — | 4 |
| AS40801US | LEWISU-ROMEOVILLE - Lewis University | 4.4K | — | 2 |
| AS10844US | VASTNET - Vastnet Corp | 4.4K | — | 4 |
| AS401288US | CL-BROADBAND - C&L Broadband Connect, LLC | 4.4K | 65.5K | 3 |
| AS62833US | HUDSONFIBERNET - Hudson Fiber Network, Inc | 4.4K | 65.5K | 23 |
| AS393336US | CATALYST - Catalyst Host LLC | 4.4K | 6 | 20 |
| AS22077US | RENAISSANCE-TECH - Renaissance Technologies Corp. | 4.4K | — | 11 |
| AS19600US | NCH-AS - Nationwide Children's Hospital | 4.4K | — | 2 |
| AS6199US | COOPERUNION - Cooper Union | 4.4K | — | 2 |
| AS10320US | ISPN - Internet Services Provider Network | 4.4K | 65.5K | 3 |
| AS40819US | VPSDATACENTER - Liquid Web, L.L.C | 4.4K | 256 | 13 |
| AS5982US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | 4.4K | — | 2 |
| AS39941US | PACIFIC-WAVE - Pacific Wave | 4.4K | 1 | 3 |
| AS22324US | XTEL - XTEL Communications | 4.4K | — | 5 |
| AS19927US | NHMCCD - Lone Star College System District | 4.4K | — | 11 |
| AS13726US | APS-AS - Atlanta Public Schools | 4.4K | — | 2 |
| AS21660US | BAXALTA - Baxalta Incorporated | 4.4K | — | 11 |
| AS3585US | AS3585 - TE Connectivity Corporation | 4.4K | — | 17 |
| AS399469US | RELIABLE-NETS - Reliable Nets LLC | 4.4K | — | 2 |
| AS14369US | NMAX - Nmax | 4.4K | 65.5K | 18 |
| AS32331US | FIVEPOINT NETWORKS - FivePoint Networks, LLC | 4.4K | — | 5 |
| AS16667US | MGMRI-AS - MGM Resorts International Operations, Inc. | 4.4K | — | 10 |