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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,285 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,310 |
| 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.
32,244 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 | 2,000 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,356 |
| 1K |
| — |
| 3 |
| AS46083US | MCCARHTY-BURGESS-WOLFF - McCarthy, Burgess & Wolff, Inc. | 1K | — | 1 |
| AS40417US | INTERACTIONSCORP - Interactions Corporation | 1K | 2 | 6 |
| AS33257US | WLC - Expert Service Providers LLC | 1K | — | 4 |
| AS396965US | WILDCARD-CORP - Wildcard Corp. | 1K | 65.5K | 5 |
| AS1236US | GDIT-AS2 - General Dynamics Information Technology, Inc. | 1K | — | 4 |
| AS16861US | REVELEX - Revelex.com | 1K | — | 1 |
| AS402732US | SMITHS - SMITH'S | 1K | — | 3 |
| AS21666US | OSF-ASN-01 - OSF Healthcare System | 1K | — | 4 |
| AS395086US | SCDC-SC-DATA-CENTER - SC Data Center, Inc. | 1K | — | 3 |
| AS14771US | CITCO-ASN-1 - Citco Technology Management, Inc. | 1K | — | 4 |
| AS63229US | NOCTURNAL - Nocturnal Networks | 1K | 4.1K | 3 |
| AS398900US | RENCI-FABRIC - University of North Carolina at Chapel Hill | 1K | 4.1K | 2 |
| AS397751US | JAMESAVERY - JAMES AVERY CRAFTSMAN INC | 1K | — | 4 |
| AS398123US | IRACING-CORPORATE - IRACING.COM MOTORSPORT SIMULATIONS, LLC | 1K | 4 | 6 |
| AS399183US | DEEPINTENT - DeepIntent, Inc. | 1K | 1 | 5 |
| AS54190US | LDSM-AS - Leads Media, Inc | 1K | — | 1 |
| AS31789US | ICON-TECHNOLOGIES - ICON Technologies Inc. | 1K | — | 4 |
| AS1647US | INTEROP-AS - Interop Technologies | 1K | — | 4 |
| AS22342US | GCSOM - Geisinger System Services | 1K | — | 1 |
| AS32932US | COVIUS-AS32932 - Covius Shared Services, LLC | 1K | 1 | 5 |
| AS16674US | COMPASSGROUP-USA - Compass Group USA Inc | 1K | — | 4 |
| AS22265US | GENESIS-OMAHA-NE - GENESIS SYSTEMS, LLC | 1K | — | 1 |
| AS27499US | SERVERS-DEPOT-01 - Servers Depot, LLC | 1K | — | 1 |
| AS54375US | CENTRE-COLLEGE - Centre College | 1K | — | 3 |
| AS15248US | METASWITCH-AS1 - Metaswitch Networks Corp. | 1K | 10 | 11 |
| AS397010US | DICE-TECH-ASN-01 - Dice Lion Technology, LLC | 1K | — | 4 |
| AS10648US | PACIFICBROK - Pacific Brokerage Services | 1K | — | 4 |
| AS46575US | WSSC-AS - Washington Suburban Sanitary Commission | 1K | — | 3 |
| AS6209US | NFL2 - National Football League | 1K | — | 4 |
| AS14021US | PSECU - Pennsylvania State Employees Credit Union | 1K | — | 4 |
| AS21530US | FISERV-EPF-OMAHA - Fiserv Solutions, LLC | 1K | 1 | 4 |
| AS16486US | WEYERHAEUSER - Weyerhaeuser Company | 1K | — | 1 |
| AS142616US | MNI-AS-AP - Misaka Network, Inc. | 1K | 4.1K | 10 |
| AS53506US | TASTYWORKS-01 - tastyworks, Inc. | 1K | — | 1 |
| AS32215US | SVVSD - SVVSD | 1K | — | 3 |
| AS46334US | PRINCEWILLIAMCOSCHOOLS - Prince William County Public Schools | 1K | — | 4 |
| AS209373US | SWISSNET-AS SWISSNET LLC | 1K | — | 4 |
| AS394304US | SACRAMENTO-KINGS - Sacramento Downtown Arena, LLC | 1K | — | 4 |
| AS62816US | OWS - OCTOPUS WEB SOLUTION INC | 1K | — | 4 |
| AS13491US | FSBA - Florida State Board of Administration | 1K | — | 3 |
| AS17144US | NUANCE-NOD - Microsoft Corporation | 1K | 3 | 7 |
| AS21613US | QUINAULT-INDIAN-NATION - Quinault Indian Nation | 1K | — | 1 |
| AS11982US | SHWISP - Sandhills Wireless, LLC | 1K | — | 1 |
| AS399404US | VELCO-SP-NET - Vermont Electric Power Company, Inc. | 1K | — | 1 |
| AS401074US | TF-SEC - TForce Freight | 1K | — | 1 |
| AS11389US | HERITAGE-GALLERIES-AND-AUCTIONEERS - Heritage Capital Corporation | 1K | — | 4 |