*= Organizations that have supported more than one meeting (in some cases, many meetings.)
| NANOG42 | February 2008, San Jose | CRG West |
| NANOG41 | October 2007, Albuquerque | One Connect IP |
| NANOG 40 | June 2007, Bellevue | XKL |
| NANOG 39 | February 2007, Toronto | Torix and Teleglobe |
| NANOG 38 | October 2006, St. Louis | SAVVIS and Washington University in St. Louis' School of Engineering and Applied Science |
| NANOG 37 | June 2006, San Jose | Ultra DNS |
| NANOG 36 | February 2006, Dallas | Yahoo! |
| NANOG 35 | October 2005, Los Angeles | Equinix |
| NANOG 34 | May 2005, Seattle | Switch and Data* | NANOG 33 | Jan.-Feb. 2005, Las Vegas | UltraDNS* |
| NANOG 32 | Oct. 2004, Reston VA | AOL* and Time Warner Cable | NANOG 31 | May 2005, San Francisco | CNET |
| NANOG 30 | Feb. 2004, Miami | Terremark* |
| NANOG 29 | Oct. 2003, Chicago | Server Central |
| NANOG 28 | June 2003, Salt Lake City | Utah Education Network, University of Utah, and UltraDNS* |
| NANOG 27 | Feb. 2003, Phoenix | Rodney Joffe* and UltraDNS* |
| NANOG 26 | Oct. 2002, Eugene | The University of Oregon* and Sprint* |
| NANOG 25 | June 2002, Toronto | Group Telecom |
| NANOG 24 | Feb. 2002, Miami | Terremark* |
| NANOG 23 | Oct. 2001, Oakland | Cisco Systems |
| NANOG 22 | May 2001, Scottsdale | CenterGate Research Group* |
| NANOG 21 | Feb. 2001, Atlanta | Riverstone Networks |
| NANOG 20 | October 2000, Washington D.C. | American Online (now AOL Time-Warner) |
| NANOG 19 | June 2000, Albuquerque | iHighway* |
| NANOG 18 | February 2000, San Jose | Exodus (now Cable & Wireless) |
| NANOG 17 | Oct. 1999, Montreal | Nortel Networks and Mlink internet |
| NANOG 16 | May 1999, Eugene | University of Oregon* and Verio |
| NANOG 15 | Jan.-Feb. 1999, Denver | Qwest |
| NANOG 14 | Nov. 1998, Atlanta | Netrail, Inc. |
| NANOG 13 | June 1998, Dearborn | Merit Network, Inc.* |
| NANOG 12 | Feb. 1998, Albuquerque | iHighway* |
| NANOG 11 | Oct. 1997, Phoenix | Genuity |
| NANOG 10 | June 1997, Miami | IBM Global Network |
| NANOG 9 | Feb. 1997, San Francisco | PacBell |
| NANOG 8 | Oct. 1996, Ann Arbor | Merit Network, Inc.* |
| NANOG 7 | May 1996, Washington D.C. | CIX |
| NANOG 6 | Feb. 1996, San Diego | SDSC |
| NANOG 5 | Sept. 1995, Pittsburgh | Pittsburgh Supercomputing Center |
| NANOG 4 | May 1995, Ann Arbor | Merit Network, Inc.* |
| NANOG 3 | Feb. 1995, Boulder | NCSA |
| NANOG 2 | Oct. 1994, Ann Arbor | Merit Network, Inc.* |
| NANOG 1 | June 1994, Ann Arbor | Merit Network, Inc.* |
Afilias
Asta Networks
Avici Systems*
CacheFly
CIRA
Cloudshield*
Endace Measurement Systems
Force10 Networks*
Foundry Networks*
Google
Hibernia Atlantic
LINX
Lucent Technologies*
Meriton Networks
Miscrosoft
Monolith Software
Nominum
ORION
PAIX.net*
PCCW Global
QOSmetrics*
Redback Networks*
Riverstone Networks*
Routing Assets Database
Sandstorm
Tellabs*
XKL
Adlex*
Akamai
Alcatel*
Alcatel-Lucent*>
Alteon
Amber Networks
Aptis Communications
Arbinet
Arbor Networks*
Atoga Systems
Avici Systems*
Bluetail
Brix Networks
Cabletron
Systems*
Cariden*
Caspian Networks
Charlotte's Web Networks
Cidera (formerly SkyCache)
Cisco Systems *
Cloudshield*
Digital Broadcast Network
Endace
Ericsson
Extreme Networks*
(donated ALL breaks at the Montreal meeting)
F5 Networks
Force10 Networks*
Foundry Networks*
Google
Gotham Networks
Group Telecom*
Internap*
ISPSoft, Inc.
Juniper Networks*
Laurel Networks*
Mu Security*
netVmg
Nominum
Nortel Networks*
OPNET Technologies*
Packet Design*
Packet Engines
Pluris*
Procket Networks*
Progressive Systems
Quarry Technologies*
Redback Networks*
Renesys
Riverhead Networks*
Riverstone Networks*
RouteScience
Seranoa Networks*
Stoke
Switch and Data
Teleglobe
Tellabs*
Tiara Networks*
Torrent Networking Technologies
Transmode*
Trend Micro
Unisphere
Networks*
VSNL International*
WANDL
XKL *
Cogent Communications*
(Hosted Sunday Evening Welcome Receptions in
Washington D.C. and Scottsdale)
Microsoft
Nortel Networks*
Qwest*
Switch and Data*
(Hosted Sunday Evening Welcome Receptions in
San Jose, San Francisco and Seattle)