| Category | Count | Percent |
| Abilene Christian University | 1 | 0.3% |
| Academic Impressions | 1 | 0.3% |
| Adams State College | 4 | 1.3% |
| American University | 1 | 0.3% |
| Arizona State University | 3 | 0.9% |
| Bard College | 1 | 0.3% |
| Baylor University | 2 | 0.6% |
| Boston College | 3 | 0.9% |
| Boston University | 1 | 0.3% |
| Bowling Green State University | 1 | 0.3% |
| British Columbia Institute of Technology | 1 | 0.3% |
| Brookhaven National Laboratory | 1 | 0.3% |
| Broome Community College | 1 | 0.3% |
| Butler Community College | 2 | 0.6% |
| California Institute of Technology | 1 | 0.3% |
| California Polytechnic State University, San Luis Obispo | 1 | 0.3% |
| California State Polytechnic University, Pomona | 1 | 0.3% |
| California State University, Fresno | 1 | 0.3% |
| California State University, Office of the Chancellor | 2 | 0.6% |
| California University of Pennsylvania | 1 | 0.3% |
| Calvin Weeks & Associates, LLC | 1 | 0.3% |
| Canisius College | 1 | 0.3% |
| Carnegie Mellon University | 1 | 0.3% |
| Case Western Reserve University | 1 | 0.3% |
| Caymas Systems | 1 | 0.3% |
| Central New Mexico Community College | 1 | 0.3% |
| Centre College | 1 | 0.3% |
| Chandler-Gilbert Community College | 1 | 0.3% |
| Citadel Security Software | 1 | 0.3% |
| Citrus College | 1 | 0.3% |
| College of Lake County | 1 | 0.3% |
| Colorado College | 1 | 0.3% |
| Colorado School of Mines | 1 | 0.3% |
| Colorado State University | 1 | 0.3% |
| Columbia University | 2 | 0.6% |
| Columbus State University | 1 | 0.3% |
| Cornell University | 3 | 0.9% |
| Cybertrust | 1 | 0.3% |
| Dalhousie University | 1 | 0.3% |
| Dartmouth College | 1 | 0.3% |
| Davidson College | 1 | 0.3% |
| DePaul University | 1 | 0.3% |
| Earlham College | 2 | 0.6% |
| East Carolina University | 1 | 0.3% |
| Eastern Connecticut State University | 1 | 0.3% |
| Eastern Illinois University | 1 | 0.3% |
| Eastern Washington University | 1 | 0.3% |
| EDUCAUSE | 1 | 0.3% |
| EDUCAUSE | 3 | 0.9% |
| Elemental Security | 1 | 0.3% |
| Emory University | 2 | 0.6% |
| Emporia State University | 1 | 0.3% |
| Exostar, LLC | 1 | 0.3% |
| Federal Bureau of Investigation | 1 | 0.3% |
| Florida International University | 1 | 0.3% |
| Foothill-DeAnza Community College District | 1 | 0.3% |
| Force10 Networks | 1 | 0.3% |
| Fort Lewis College | 4 | 1.3% |
| Franklin W. Olin College of Engineering | 1 | 0.3% |
| George Mason University | 2 | 0.6% |
| Georgetown University | 1 | 0.3% |
| Georgia State University | 1 | 0.3% |
| GeoTrust, a Verisign Company | 1 | 0.3% |
| Gonzaga University | 1 | 0.3% |
| Greenville College | 1 | 0.3% |
| Guidance Software, Inc. | 1 | 0.3% |
| Guilford College | 1 | 0.3% |
| Harvard University | 1 | 0.3% |
| Hebrew Union College-Jewish Institute of Religion | 1 | 0.3% |
| Hendrix College | 1 | 0.3% |
| HP | 1 | 0.3% |
| Illinois State University | 2 | 0.6% |
| Impulse Point | 2 | 0.6% |
| Indiana Higher Education Telecommunication System (IHETS) | 1 | 0.3% |
| Indiana State University | 1 | 0.3% |
| Indiana University | 2 | 0.6% |
| Indiana University System | 1 | 0.3% |
| Indiana University System | 4 | 1.3% |
| Information Systems Security Association (ISSA) | 1 | 0.3% |
| Internet2 | 1 | 0.3% |
| Iowa State University | 1 | 0.3% |
| iPolicy Networks | 1 | 0.3% |
| James Madison University | 1 | 0.3% |
| John Brown University | 1 | 0.3% |
| Juniper Networks, Inc. | 1 | 0.3% |
| Kansas State University | 1 | 0.3% |
| Lancope | 2 | 0.6% |
| Lansing Community College | 1 | 0.3% |
| Liberty University | 1 | 0.3% |
| Louisiana State University | 1 | 0.3% |
| Lucile Packard Children's Hospital | 1 | 0.3% |
| Madonna University | 1 | 0.3% |
| Mariette Systems International | 1 | 0.3% |
| McGill University | 2 | 0.6% |
| Medical University of South Carolina | 1 | 0.3% |
| Metropolitan State College of Denver | 1 | 0.3% |
| Miami University | 1 | 0.3% |
| Microsoft Corporation | 1 | 0.3% |
| Mirapoint | 1 | 0.3% |
| Mirapoint | 2 | 0.6% |
| MIT | 2 | 0.6% |
| Montana State University | 1 | 0.3% |
| NevadaNet | 1 | 0.3% |
| New York University | 1 | 0.3% |
| Norfolk State University | 1 | 0.3% |
| North Dakota State University | 3 | 0.9% |
| Northeastern University | 1 | 0.3% |
| Northern Illinois University | 1 | 0.3% |
| Northwestern University | 1 | 0.3% |
| OARnet | 1 | 0.3% |
| Oberlin College | 1 | 0.3% |
| Occidental College | 1 | 0.3% |
| Ohio Northern University | 1 | 0.3% |
| Ohio University | 1 | 0.3% |
| Oklahoma State University | 1 | 0.3% |
| Old Dominion University | 1 | 0.3% |
| OSHEAN | 1 | 0.3% |
| Paradise Valley Community College | 1 | 0.3% |
| Pearson | 1 | 0.3% |
| Pima County Community College District | 2 | 0.6% |
| Pittsburg State University | 1 | 0.3% |
| Polytechnic University of Puerto Rico | 1 | 0.3% |
| Proofpoint, Inc. | 1 | 0.3% |
| Purdue University | 7 | 2.2% |
| Rice University | 1 | 0.3% |
| Roosevelt University | 1 | 0.3% |
| Rutgers, The State University of New Jersey/Camden | 1 | 0.3% |
| Sacred Heart University | 1 | 0.3% |
| Saint Mary's College of California | 1 | 0.3% |
| Salem State College | 1 | 0.3% |
| Seattle Pacific University | 1 | 0.3% |
| Sendmail, Inc. | 2 | 0.6% |
| Shenandoah University | 1 | 0.3% |
| Sinclair Community College | 1 | 0.3% |
| Skidmore College | 1 | 0.3% |
| SMART Business Advisory and Consulting, LLC | 1 | 0.3% |
| SonicWALL | 1 | 0.3% |
| South Dakota State Board of Regents System Office | 1 | 0.3% |
| South Dakota State University | 1 | 0.3% |
| South Seas Corporation | 1 | 0.3% |
| Southeastern University | 1 | 0.3% |
| Southern Methodist University | 1 | 0.3% |
| Stanford University | 1 | 0.3% |
| SUNY College at Potsdam | 1 | 0.3% |
| Syracuse University | 1 | 0.3% |
| Taylor University | 1 | 0.3% |
| Texas A&M University | 2 | 0.6% |
| Texas A&M University-Corpus Christi | 1 | 0.3% |
| Texas Christian University | 1 | 0.3% |
| Texas State University-San Marcos | 1 | 0.3% |
| thawte | 2 | 0.6% |
| The George Washington University | 1 | 0.3% |
| The Ohio State University | 3 | 0.9% |
| The Pennsylvania State University | 1 | 0.3% |
| The University of Iowa | 1 | 0.3% |
| The University of Kansas Medical Center | 1 | 0.3% |
| The University of Memphis | 1 | 0.3% |
| The University of South Dakota | 1 | 0.3% |
| The University of Tampa | 1 | 0.3% |
| Transylvania University | 1 | 0.3% |
| Trinity University | 1 | 0.3% |
| Trustwave | 1 | 0.3% |
| United States Department of Commerce | 1 | 0.3% |
| Universidad de Los Andes | 1 | 0.3% |
| Universidad del Sagrado Corazón | 1 | 0.3% |
| University at Albany, SUNY | 2 | 0.6% |
| University at Buffalo | 1 | 0.3% |
| University of Akron | 1 | 0.3% |
| University of Alabama at Birmingham | 3 | 0.9% |
| University of California Office of the President | 2 | 0.6% |
| University of California, Davis | 2 | 0.6% |
| University of California, Irvine | 2 | 0.6% |
| University of California, San Diego | 1 | 0.3% |
| University of California, Santa Barbara | 1 | 0.3% |
| University of Chicago | 1 | 0.3% |
| University of Colorado at Boulder | 9 | 2.8% |
| University of Colorado Denver | 1 | 0.3% |
| University of Colorado Denver | 2 | 0.6% |
| University of Colorado System | 2 | 0.6% |
| University of Connecticut | 1 | 0.3% |
| University of Florida | 2 | 0.6% |
| University of Hawaii | 1 | 0.3% |
| University of Illinois at Urbana-Champaign | 3 | 0.9% |
| University of Kansas | 1 | 0.3% |
| University of Kansas | 3 | 0.9% |
| University of Kentucky | 1 | 0.3% |
| University of Maryland, Baltimore | 1 | 0.3% |
| University of Maryland, Baltimore County | 2 | 0.6% |
| University of Massachusetts Amherst | 1 | 0.3% |
| University of Massachusetts Central Office | 1 | 0.3% |
| University of Michigan-Ann Arbor | 2 | 0.6% |
| University of Minnesota | 2 | 0.6% |
| University of Mississippi | 1 | 0.3% |
| University of Missouri | 2 | 0.6% |
| University of Missouri System | 2 | 0.6% |
| University of Missouri-Kansas City | 1 | 0.3% |
| University of Nebraska - Lincoln | 1 | 0.3% |
| University of Nebraska at Kearney | 2 | 0.6% |
| University of Nebraska at Omaha | 1 | 0.3% |
| University of Nevada, Reno | 1 | 0.3% |
| University of North Carolina Greensboro | 1 | 0.3% |
| University of North Dakota | 1 | 0.3% |
| University of Northern Colorado | 2 | 0.6% |
| University of Northern Iowa | 2 | 0.6% |
| University of Notre Dame | 2 | 0.6% |
| University of Oklahoma | 1 | 0.3% |
| University of Oklahoma Health Sciences Center | 2 | 0.6% |
| University of Oxford | 1 | 0.3% |
| University of Pittsburgh | 1 | 0.3% |
| University of Rhode Island | 1 | 0.3% |
| University of Rochester | 1 | 0.3% |
| University of San Diego | 1 | 0.3% |
| University of South Carolina | 2 | 0.6% |
| University of St. Thomas | 1 | 0.3% |
| University of Technology, Sydney | 1 | 0.3% |
| University of Texas at Austin | 2 | 0.6% |
| University of Texas at Brownsville | 1 | 0.3% |
| University of Washington | 1 | 0.3% |
| University of Wisconsin-Madison | 5 | 1.6% |
| University of Wisconsin-Milwaukee | 1 | 0.3% |
| University of Wyoming | 3 | 0.9% |
| Virginia Tech | 4 | 1.3% |
| Washington State University | 1 | 0.3% |
| Whitman College | 1 | 0.3% |
| Willamette University | 1 | 0.3% |
| Worcester Polytechnic Institute | 1 | 0.3% |
| Wright State University | 1 | 0.3% |
| Yale University | 2 | 0.6% |
| York University | 2 | 0.6% |
| Total | 318 | |