| Code | Name |
| ABC | ABC Masters - Gray Sharks |
| AAC | Adirondack Athletic Club |
| AQSS | Aquatic Super Stars |
| ABORY | Attleboro YMCA |
| BABSN | Babson College Masters |
| BENC | Bennington Commets (VT) |
| BGSC | Bernal's Gators Masters (Waltham, MA) |
| BLUE | Blue State Masters |
| ABF | Bluefish Masters |
| BOROY | Boroughs YMCA |
| BC | Boston College |
| LANES | Boston LANES (Liquid Assets New England Swimming) |
| BSCW | Boston Sports Clubs - Wellesley |
| BUMS | Boston University Masters |
| BOSY | Boston YMCA (Central Branch) |
| BRND | Brandeis |
| BRAT | Brattleboro Masters - VT |
| BSCM | Bridgewater State Masters |
| BRYNT | Bryant College |
| BRY | Burbank/Reading YMCA |
| CMSC | Cambridge Masters (at Harvard) |
| CCM | Cape Cod Masters |
| CCBA | CCBA Aqua Dynamics |
| CCRI | CCRI Masters |
| CMY | Clark Memorial YMCA |
| CONC | Concord YMCA (NH) |
| DUX | Duxbury (MA) (Percy Walker Pool) |
| ELM | East Lyme Masters |
| FAST | Fitchburg Area Swim Team |
| FITCH | Fitchburg YMCA (MA) |
| GSP | Granite State Penguins (NH) |
| GBM | Great Bay Masters (NH) |
| GMAM | Green Mountain Aquatics Masters |
| GDYM | Greendale YMCA |
| GWDM | Greenwood Masters |
| HLPT | Healthpoint |
| HOCK | Hockomock YMCA (MA) |
| IROC | Indoor Rec of Orleans County - VT |
| JCCNM | JCC Newton Masters (MA) |
| JCCNS | JCC North Shore (Marblehead, MA) |
| JCCS | JCC Springfield |
| JMBO | Jumbo Aquatics - Tufts |
| KEENE | Keene Swim Masters (NH) |
| KINGS | Kingsbury Club (Kingston, MA) |
| LRAC | Little Rhody Aquatic Club - PC |
| LONG | Longfellow (Natick, MA) |
| LOWY | Lowell YMCA |
| LUDLW | Ludlow Community Center (MA) |
| MESC | Maine Masters (ME) |
| MHM | Mansion House Masters (Vinyard Haven, MA) |
| MIT | Massachusetts Institute of Technology |
| MEDF | Medford Masters (MA) |
| MEMPH | Memphremagog Masters |
| MWYT | Metrowest YMCA Tsunami |
| MUFF | Middlebury Muffintops |
| MAMA | Minuteman Andover Masters Association |
| NWSC | New Wave Swim Club |
| NBPTY | Newburyport YMCA (MA) |
| NAC | Newport Athletic Club |
| NCAC | North Country Aquatic Club (NH) |
| NSSC | North Shore Swim Club (Salem State College) |
| NSY | North Suburban YMCA |
| NHJFK | Northampton JFK (MA) |
| NOHO | Northampton Masters |
| OAKY | Oak Square YMCA |
| OSM | Ocean State Masters |
| QYM | Quincy Y Masters Swimming |
| RAMS | Rams Swim Team |
| SVY | Scantic Valley YMCA |
| SIMM | Simmons College |
| SROCK | Simon's Rock |
| SMTH | Smith College |
| SCA | South Coast Aquatics |
| SOCOY | South County YMCA |
| SOSHY | South Shore YMCA |
| SVTS | Southern VT Stingrays |
| STMM | St Michaels Masters |
| STOWE | Stowe Masters - The Swimming Hole |
| SMS | Striar Masters Swimming |
| SAM | Suburban Athletic Masters (Framingham, MA) |
| SWMRI | Swim Rhode Island |
| TNT | Technique and Training |
| CSPLIT | The Cape Splitters |
| TRIY | Try-Y |
| TWOAK | Twin Oaks (Burlington, VT) |
| UMASS | U Mass Amherst |
| UMD | U Mass Dartmouth |
| UCLUB | University Club of Boston |
| UVRA | UV Rays (White River Junction, VT) |
| WALTH | Waltham YMCA (MA) |
| WCMS | Wellesley College |
| WSSC | West Side Swim Club (MA) |
| WSUBY | West Suburban Y |
| WTS | Westboro Tennis & Swim |
| WYMPS | Westerly Y Masters |
| WMW | Western Mass Waterhorses |
| WEST | Westfield Boys Club (MA) |
| WYW | Westfield YMCA Wave |
| WHEAT | Wheaton Wahoos (Norton, MA) |
| YNS | YMCA of the North Shore (Beverly, MA) |