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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 |
| TRANSMON119 - Transmontaigne Product Services, Inc. |
| 512 |
| — |
| 2 |
| AS26246US | CNHIN-NAFTA - CNH INDUSTRIAL AMERICA LLC | 512 | — | 2 |
| AS62021US | LATISYS-DENVER Zayo Group, LLC | 512 | — | 2 |
| AS36178US | STEPHENGOULD-CORP - Stephen Gould Corporation | 512 | — | 1 |
| AS46655US | ALIGN-NYC - ALIGN Inc. | 512 | — | 2 |
| AS13527US | GOOFL-TESTBED - Gooflare LLC | 512 | 200 | 202 |
| AS399285US | CSLICO - Citizens Financial Corporation | 512 | — | 2 |
| AS23042US | SJRMC-ASN - San Juan Regional Medical Center Inc. | 512 | — | 2 |
| AS15331US | BCI-LAB - Blackfoot Telephone Cooperative, Inc. | 512 | 256 | 2 |
| AS46557US | DWS-UAE - Disney Worldwide Services, Inc. | 512 | — | 2 |
| AS395078US | MHALINK-01 - Massachusetts Health & Hospital Association, Inc. | 512 | — | 2 |
| AS17174US | WALMART-INDIA - Wal-Mart Stores, Inc. | 512 | — | 2 |
| AS400211US | PORT80 - Port 80 | 512 | 65.5K | 3 |
| AS393378US | SACFCU-P7148 - Cobalt Credit Union | 512 | — | 2 |
| AS40373US | UMC-NET - University Medical Center, Inc | 512 | — | 1 |
| AS397430US | KANE-COUNTY-GOV - County of Kane | 512 | — | 1 |
| AS40016US | MESIROW - MESIROW FINANCIAL HOLDINGS, INC. | 512 | — | 2 |
| AS32236US | TRANSCOM-BGP-01 - TRANSCOM | 512 | — | 2 |
| AS15007US | TZUCHI - Buddhist Tzu Chi Foundation | 512 | — | 2 |
| AS20416US | PRYSMIAN-01 - Prysmian Cables and Systems USA LLC | 512 | — | 1 |
| AS27291US | CDS - Century Data Service, Inc | 512 | — | 2 |
| AS27029US | SJE-INC - Primex | 512 | — | 2 |
| AS14914US | JBPCO - J.B. Poindexter & Co., Inc. | 512 | — | 1 |
| AS32269US | CITY-OF-IDAHO-FALLS - City of Idaho Falls | 512 | — | 2 |
| AS54256US | VELOCITY-COMMUNICATIONS - Velocity Communications Inc. | 512 | 65.5K | 3 |
| AS22554US | PEWNETWORK - The Pew Charitable Trusts | 512 | — | 2 |
| AS11184US | EG-USEAST - EXPEDIA, INC | 512 | — | 2 |
| AS398076US | OVERTURE-LIFE - Overture Life, Inc. | 512 | 11 | 12 |
| AS46569US | WALSH-COLLEGE - Walsh College of Accountancy and Business Administration | 512 | — | 2 |
| AS11327US | NCI-GROUP-INC - NCI Group, Inc. | 512 | — | 2 |
| AS397957US | EMEA-PUBLIC - HEWLETT PACKARD ENTERPRISE COMPANY | 512 | — | 2 |
| AS397418US | SYNAMEDIA - Synamedia | 512 | 4.1K | 3 |
| AS15349US | AS-NJ1-DIA - Guggenheim Services LLC | 512 | — | 2 |
| AS63417US | GPSF-ASN-01 - Arc Games Inc. | 512 | — | 2 |
| AS393366US | CENTRA-5 - Centra Health, Inc. | 512 | — | 2 |
| AS26353US | REALNETWORKS - REALNETWORKS LLC | 512 | — | 1 |
| AS401622US | OMNISSA-WDC - Omnissa, LLC | 512 | 1 | 2 |
| AS16573US | SMCC - Santa Monica Community College District | 512 | — | 2 |
| AS46384US | WICONNECT-WIRELESS - WiConnect Wireless LLC | 512 | — | 2 |
| AS398002US | TGNA-WQAD - TEGNA Inc. | 512 | — | 2 |
| AS399967US | HOMESERVEUSA-BGP-ASN - HomeServe USA Corp | 512 | — | 2 |
| AS399419US | PSI-CORE-OH1 - Prime Servers, Inc. | 512 | — | 2 |
| AS62974US | OOCL-SLC - OOCL (USA) Inc. | 512 | — | 2 |
| AS23182US | GREENBRIER-AS - THE GREENBRIER COMPANIES, INC. | 512 | — | 1 |
| AS397311US | WTV1951 - Zito Media | 512 | — | 2 |
| AS399452US | RPECEL - Rugged | 512 | — | 2 |
| AS22471US | MOTEMARINELAB - Mote Marine Laboratory | 512 | — | 1 |