ASNs in United States
17,163 Autonomous Systems are registered in United States, ordered by the IPv4 space our directory attributes to each. Page 2 of 172.
Networks 101-200 by IPv4 Space
The badge is how many IPv4 /24 blocks our directory attributes to each network. For the prefixes an AS is announcing right now, open its page.
- 3,398AS12083WideOpenWest Finance LLCwowway.com
- 3,245AS17378TierPoint, LLCtierpoint.com
- 3,221AS33588Charter Communications LLCcharter.com
- 3,200AS36375University of Michiganumich.edu
- 3,127AS46887Zayo Bandwidthzayo.com
- 3,072AS6181Cincinnati Bell Telephone Company LLCcincinnatibell.com
- 3,058AS33070Rackspace Hostingrackspace.com
- 3,056AS231Michigan State Universitymsu.edu
- 3,012AS11232Midcontinent Communicationsmidco.com
- 2,958AS1906Northrop Grummannorthropgrumman.com
- 2,901AS36352HostPapacolocrossing.com
- 2,871AS11686Zayo Bandwidthzayo.com
- 2,860AS243L3Harris Technologies, Inc.l3harris.com
- 2,835AS6325Illinois Century Networkillinois.gov
- 2,816AS2687AT&T Enterprises, LLCatt.com
- 2,777AS2572University of Missouri - dba the Missouri Research and Education Network (MOREnet)more.net
- 2,723AS8103Florida Department of Management Services - Division of Telecommunicationsfl.gov
- 2,683AS3737PenTeleData Inc.penteledata.net
- 2,666AS14265TPx Communicationstpx.com
- 2,656AS8011MongoDB, Inc.mongodb.com
- 2,653AS63949Akamai Connected Cloudlinode.com
- 2,577AS31822City University of New Yorkcuny.edu
- 2,560AS3128University of Wisconsin Systemwisconsin.edu
- 2,559AS26496GoDaddy.com, LLCgodaddy.com
- 2,556AS14654AT&T Enterprises, LLCatt.com
- 2,555AS14962NCR Voyix Corporationncrvoyix.com
- 2,542AS297National Aeronautics and Space Administrationnasa.gov
- 2,513AS4193State of Washingtonwa.gov
- 2,500AS46375Sonic Telecom LLCsonic.com
- 2,434AS21859Zenlayer Inczenlayer.com
- 2,433AS87Indiana Universityiu.edu
- 2,321AS14977State of Wyoming Department A&Iwyo.gov
- 2,319AS10361Bloomberg, LPbloomberg.com
- 2,304AS2897Georgia Technology Authoritygeorgia.gov
- 2,256AS23089Hotwire Communicationshotwirecommunication.com
- 2,144AS6621Hughes Network Systems, LLChughes.com
- 2,111AS43515Google Ireland Limitedgoogle.com
- 2,077AS6614T-Mobile USA, Inc.t-mobile.com
- 2,075AS3598Microsoft Corporationmicrosoft.com
- 2,066AS7726FedEx Internet Technologies Corporationfedex.com
- 2,052AS395954Leaseweb USA, Inc.leaseweb.com
- 2,044AS19773Motorola, Inc.motorola.com
- 2,033AS19165Webpass Inc.gfiber.com
- 2,005AS13649Flexential Colorado Corp.viawest.com
- 2,002AS19994Rackspace Hostingrackspace.com
- 1,991AS7046Verizon Businessverizonbusiness.com
- 1,984AS13325Michigan State Governmentmichigan.gov
- 1,978AS2381WiscNetwiscnet.net
- 1,978AS35916MULTACOM CORPORATIONmultacom.com
- 1,973AS2379CenturyLink Communications, LLCcenturylink.com
- 1,924AS5852United States Department of Defense (DoD)mail.mil
- 1,918AS22616ZSCALER, INC.zscaler.com
- 1,910AS46606Unified Layerendurance.com
- 1,894AS29802HIVELOCITY, Inc.hivelocity.net
- 1,886AS13977Fidiumconsolidated.com
- 1,883AS54600PEG TECH INCraksmart.com
- 1,873AS17306JAB Wireless, INC.jabbroadband.com
- 1,861AS6453TATA COMMUNICATIONS (AMERICA) INCtatacommunications.com
- 1,860AS3300British Telecommunications Limitedbt.net
- 1,792AS8Rice Universityrice.edu
- 1,753AS394089Google LLCgoogle.com
- 1,738AS32934Facebook, Inc.facebook.com
- 1,728AS3999The Pennsylvania State Universitypsu.edu
- 1,694AS10430Washington State K-20 Telecommunications Networkwa-k20.net
- 1,662AS8001Cologix, Inccologix.com
- 1,656AS62904Eonix Corporationserverhub.com
- 1,653AS7287AT&T Enterprises, LLCatt.com
- 1,603AS6559State of NC - State Telecommunications Servicesnc.gov
- 1,571AS10753Level 3 Parent, LLClevel3.com
- 1,563AS3372Verizon Businessverizonbusiness.com
- 1,539AS3136State of WI Dept. of Administrationwi.gov
- 1,538AS17055University of Utahutah.edu
- 1,536AS357United States Department of Defense (DoD)mail.mil
- 1,536AS361United States Department of Defense (DoD)mail.mil
- 1,534AS11663State of Utahutah.gov
- 1,527AS1299Arelion Sweden ABarelion.com
- 1,518AS54004Cablevision Lightpath LLClightpathfiber.com
- 1,504AS398781OCULUS NETWORKS INC
- 1,499AS40065CNSERVERS LLCcnservers.com
- 1,475AS6122Iowa Communications Networkiowa.gov
- 1,458AS25820IT7 Networks Incit7.net
- 1,454AS6939Hurricane Electric LLChe.net
- 1,451AS647United States Department of Defense (DoD)mail.mil
- 1,447AS36149Hawaiian Telcom Services Company, Inc.hawaiiantel.com
- 1,430AS3354University of Texas Systemutsystem.edu
- 1,399AS30058FDCservers.netfdcservers.net
- 1,384AS62240Clouviderclouvider.com
- 1,362AS7843Charter Communications Inccharter.com
- 1,354AS54113Fastly, Inc.fastly.com
- 1,339AS2688AT&T Enterprises, LLCatt.com
- 1,334AS13445Cisco Webex LLCwebex.com
- 1,314AS5056Aureon Network Servicesaureon.com
- 1,290AS30600Metronetmetronet.com
- 1,289AS59University of Wisconsin Madisonwisc.edu
- 1,289AS91Rensselaer Polytechnic Instituterpi.edu
- 1,288AS32Stanford Universitystanford.edu
- 1,284AS6289American Honda Motor Company, Inc.honda.com
- 1,282AS32475Internap Holding LLCinternap.com
- 1,280AS68Los Alamos National Laboratorylanl.gov
- 1,272AS217University of Minnesotaumn.edu
Looking for a different country? The ASN Directory lists every one we hold, with its network count.