Offbeat Internet
Public Access

LDAP

The Lightweight Directory Access Protocol (LDAP) is a query protocol, that responds by returning a "Whitepages-like" X.500 Directory Access Protocol entry. LDAP was formerly championed by Microsoft as their semi-proprietary alternative to the similar CCSO protocol. Just copy & paste the full address into your LDAP client, or the rare Browser that understands the URI "ldap://". Global LDAP servers attempt to be global lookup directories, often aggregating data from multiple local databases in with their own. Local LDAP servers focus their database on just one organization, such as a University or large business. Below are addresses for various publicly open LDAP servers.
[IANA Port assignment = 389]

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Global LDAP Servers

• ldap.bigfoot.com - Bigfoot, huge global directory
• ldap.four11.com - Four11
• ldap.infospace.com - Infospace
• ldap.switchboard.com - Switchboard
• ldap.whowhere.com - Who Where
• ldap.yahoo.com - LDAP Yahoo
• www.openldap.com - Open LDAP

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Local LDAP Servers

• bay.csuhayward.edu - California State at Hayward
• bigfoot.cl.uh.edu - University of Houston at Clearlake
• dir.skidmore.edu - Skidmore
• dir.support.plattsburgh.edu - Plattsburgh State University
• directory.colostate.edu - Colorado State University
• directory.ewu.edu - Eastern Washington University
• directory.gmu.edu - George Mason University
• directory.monash.edu.au - Monash University
• directory.nih.gov - National Institute of Health
• directory.uakron.edu - University of Akron
• directory.ucalgary.ca - University of Calgary, Canada
• directory.ucla.edu - University of California at Los Angeles
• directory.uga.edu - University of Georgia
• directory.unc.edu - University of North Carolina at Chapel Hill
• directory.upenn.edu - University of Pennsylvania
• directory.washington.edu - University of Washington
• donald.duc.auburn.edu - Auburn University
• ds.memphis.edu - University of Memphis
• GAL.PEPPERDINE.EDU - Pepperdine University
• home.oit.umass.edu - University of Massachusetts at Amherst
• iago.stfx.ca - St Francis Xavier University, Canada
• it.sonoma.edu - Sonoma State University
• ldap.andrew.cmu.edu - Carnegie Mellon University
• ldap.arizona.edu - University of Arizona
• ldap.bath.ac.uk - University of Bath, United Kingdom
• ldap.baylor.edu - Baylor University
• ldap.bowdoin.edu - Bowdoin College
• ldap.brockport.edu - SUNY Brockport
• ldap.bu.edu - University of Massachusetts at Boston
• ldap.buffalo.edu - University of Buffalo
• ldap.calstatela.edu - California State at Los Angeles
• ldap.chapman.edu - Chapman University
• ldap.columbia.edu - Columbia University
• ldap.dtcc.edu - Delaware Tech Community College
• ldap.exchange.missouri.edu - University of Missouri
• ldap.fnal.gov - Fermi National Accelerator Laboratory
• ldap.georgetown.edu - Georgetown University
• ldap.ghks.de - Gottfried Hamm Kommunikations Systeme
• ldap.iastate.edu - Iowa State University
• ldap.ilstu.edu - Illinois State University
• ldap.isu.edu - Idaho State University
• ldap.itd.umich.edu - University of Michigan
• ldap.jmu.edu - James Madison University
• ldap.lehigh.edu - Lehigh University
• ldap.lynchburg.edu - Lynchburg College
• ldap.mscd.edu - Metropolital State College of Denver
• ldap.mtsu.edu - Middle Tennesse State University
• ldap.nwu.edu - Northwestern University
• ldap.nyu.edu - New York University
• LDAP.openmail.calpoly.edu - CalPoly
• ldap.psu.edu - Pennsylvania State University
• ldap.rit.edu - Rochester Institute of Technology
• ldap.sfu.ca - Simon Fraser University, Canada
• ldap.southwestern.edu - Southwestern University
• ldap.tcs.tulane.edu - Tulane University
• ldap.trentu.ca - Trent University, Canada
• ldap.uab.edu - University of Alabama at Birmingham
• ldap.uas.alaska.edu - University of Alaska Southeast Campus
• ldap.ucdavis.edu - University of California at Davis
• ldap.uconn.edu - University of Connecticut
• ldap.ufl.edu - University of Florida
• ldap.ukans.edu - University of Kansas
• ldap.uleth.ca - Lethbridge University, Canada
• ldap.umd.edu - University of Maryland
• ldap.uno.edu - University of New Orleans
• ldap.utexas.edu - University of Texas at Austin
• ldap.utk.edu - University of Tennessee at Knoxville
• ldap.virginia.edu - University of Virginia
• ldap.willamette.edu - Willamette University
• ldap.wvu.edu - West Virginia University
• ldap-test1.musc.edu - Medical University of South Carolina
• ldaphost.dur.ac.uk - University of Durham, United Kingdom
• ldapserver.usask.ca - University of Saskatchewan
• MAIL.ECU.EDU - East Carolina University
• mail.gallaudet.edu - Gallaudet University
• mail.montclair.edu - Montclair State University
• mail.udel.edu - University of Delaware
• mailsv03.colgate.edu - Colgate University
• noc2.irt.drexel.edu - Drexel University
• postoffice.uml.edu - University of Massachusetts at Lowell
• siu-ds.siu.edu - Southern Illinois University
• www.uark.edu - University of Arkansas
• www.wesleyan.edu - Wesleyan University
• x500.bund.de - Deutsche Bund
• x500.umn.edu - University of Minnesota

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Addresses last verified February 2002 - (more recent addresses might be found at "http://www.emailman.com/ldap/public.html")