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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 |
| — |
| 5 |
| AS46597US | ECOMMERCE - Ecommerce Discovery, LLC | 4.1K | — | 9 |
| AS17003US | ZOETIS-INC - Zoetis Inc. | 4.1K | — | 6 |
| AS394666US | NYU-HOSPITALS-CENTER - NYU Langone Health | 4.1K | 65.5K | 10 |
| AS16970US | MIDNET - MIDnet | 4.1K | 16 | 17 |
| AS6547US | DCT-ASN - DCT Technologies, Inc. | 4.1K | — | 1 |
| AS6195US | GSCO - The Goldman Sachs Group, Inc. | 4.1K | — | 16 |
| AS20031US | SDP-ASN - The School District of Pittsburgh | 4.1K | — | 1 |
| AS32765US | SENTCO - Sentco.net, LLC | 4.1K | 65.5K | 2 |
| AS55178US | COMPAS - City of Morganton | 4.1K | — | 16 |
| AS54323US | MMC-AS-NOV2011 - Maimonides Medical Center | 4.1K | — | 4 |
| AS394356US | ICI - INTERNET COMMUNICATIONS INC. | 4.1K | — | 4 |
| AS19718US | NCNI - MCNC | 4.1K | 1 | 2 |
| AS393439US | ULTISAT-ASN - UltiSat Inc | 4.1K | — | 6 |
| AS35852US | YELLOW-KCGO - YRC Inc. | 4.1K | — | 13 |
| AS11203US | MATRIX-BROADBAND - Matrix Broadband | 4.1K | — | 16 |
| AS32178US | SCC-ASN-31004 - Sinclair Community College | 4.1K | — | 1 |
| AS394797US | MILLIK-ASN1 - Millikin University | 4.1K | — | 1 |
| AS54594US | ILLUMINATE-HILLSBORO - Illuminate Hillsboro | 4.1K | 65.5K | 5 |
| AS401975US | RAILS - Reaching Across Illinois Library System | 4.1K | — | 1 |
| AS31827US | BNT-NETWORK-ACCESS - Biz Net Technologies | 4.1K | 65.5K | 2 |
| AS35906US | AS-TRAIANA - Traiana, Inc | 4.1K | — | 15 |
| AS29826US | JH-ASN - John Hancock Life Insurance Company (U.S.A.) | 4.1K | — | 2 |
| AS30243US | SPSD - The School District of the City of Saginaw | 4.1K | — | 1 |
| AS11102US | VYANET-OPERATING-GROUP-INC - VYANET | 4.1K | — | 1 |
| AS29302US | HSI-EUROPE Hosting Services Inc | 4.1K | — | 1 |
| AS23029US | ESTREET - E Street | 4.1K | — | 9 |
| AS22725US | HOME-COMMUNICATIONS-INC - Home Communications Inc | 4.1K | — | 4 |
| AS14603US | ABILITY-NETWORK - Ability Network Inc. | 4.1K | — | 2 |
| AS26661US | JCPS-ASN - Jeffco Public Schools | 4.1K | — | 3 |
| AS46469US | GETRESPONSE-IMPLIX - GETRESPONSE | 4.1K | — | 5 |
| AS16833US | PREBONYAMANEUSA - Tullett Prebon Americas Corp. | 4.1K | — | 16 |
| AS14859US | CAC-ASN - CENTRAL ARIZONA COLLEGE | 4.1K | — | 6 |
| AS12022US | ONEMAIN-AS - OneMain Holdings, Inc | 4.1K | — | 8 |
| AS40583US | COLUMBIAGORGE-ESD - Columbia Gorge Education Service District | 4.1K | 65.5K | 10 |
| AS19977US | MBRML-AS - Mayer Brown LLP | 4.1K | — | 10 |
| AS21624US | CYBERLYNK-PHX - Wisconsin CyberLynk Network, Inc. | 4.1K | 65.5K | 4 |
| AS53862US | MCDANIELCOLLEGE - McDaniel College | 4.1K | — | 1 |
| AS33598US | GSLLC - The Goldman Sachs Group, Inc. | 4.1K | — | 16 |
| AS16824US | HARLANNET-ASN - Harlan Municipal Utilities | 4.1K | — | 9 |
| AS47002US | TIGERTECH - Tiger Technologies LLC | 4.1K | 4.1K | 5 |
| AS393960US | HOST4GEEKS-LLC - Host4Geeks LLC | 4.1K | — | 10 |
| AS46749US | STANFORD-INTERNET-ACCESS - Stanford University | 4.1K | — | 1 |
| AS29948US | EMPIRICAL-NET - Empirical Networks, Ltd. | 4.1K | 4.1K | 2 |
| AS394728US | MILES - Miles Cooperative Telephone Association, Inc. | 4.1K | 4.1K | 6 |
| AS46130US | POSITIVE-USA - The Positive Internet Company, Inc. | 4.1K | — | 1 |
| AS1360US | MEWS-04 - Mayfield Electric & Water Systems | 4.1K | — | 1 |