| Code | Name |
| ABC | ABC Masters - Gray Sharks |
| AAC | Adirondack Aquatic Club Masters |
| BCM | Babson College Masters |
| BAM | Bennington Area Masters Swim Club |
| BSM | Berkshire South Masters |
| BGSC | Bernal's Gators |
| ABF | Bluefish Swim Club |
| BC | Boston College Masters Swim Club |
| LANE | Boston LANES (Liquid Assets New England Swimming) |
| BSCF | Boston Sports Clubs - Franklin |
| BSCW | Boston Sports Clubs - Wellesley |
| BUMS | Boston University Masters |
| BRAT | Brattleboro Masters |
| BMS | Brookline Masters Swimming |
| BYD | Burlington YMCA Masters |
| CMSC | Cambridge Masters Swim Club |
| CCM | Cape Cod Masters |
| CCBA | CCBA Aqua Dynamics |
| CONC | Concord Masters |
| DUX | Duxbury Masters (Percy Walker Pool) |
| ELM | East Lyme Masters |
| EPBG | East Providence Boys & Girls Club |
| FAST | Fitchburg Area Swim Team |
| FITC | Fitchburg YMCA Masters |
| FLA | Flaherty Masters |
| GSP | Granite State Penguins (NH) |
| BOSY | Greater Boston YMCA Masters |
| GDYM | Greendale YMCA Masters |
| GWDM | Greenwood Masters |
| HLPT | Healthpoint Masters |
| HOCK | Hockomock Masters |
| IROC | Indoor Rec of Orleans County - VT |
| JCCN | JCC Newton Masters (MA) |
| JCCS | JCC Springfield |
| JMBO | Jumbo Aquatics - Tufts |
| KEEN | Keene Swim Masters |
| KING | Kingsbury Club Masters |
| LRAC | Little Rhody Aquatic Club - PC |
| LONG | Longfellow Masters |
| LOWY | Lowell YMCA |
| LYKW | Lynn YMCA Killer Whales |
| JCCM | Marblehead JCC Masters |
| MVM | Martha's Vineyard Masters |
| MELY | Melrose YMCA |
| MWYT | MetroWest Masters |
| MUFF | Middlebury Muffintops (Middlebury, VT) |
| MAMA | Minuteman Andover Masters Association |
| MIT | MIT Masters |
| NEM | NEM Unattached (No Workout Group) |
| NBPT | Newburyport YWCA |
| NAC | Newport Athletic Club Masters |
| NSSC | North Shore Swim Club Masters |
| NSY | North Suburban Masters |
| NJFK | Northampton JFK |
| OAKY | Oak Square YMCA Masters |
| PITY | Pittsfield YMCA Polar Bear Masters |
| QYM | Quincy Y Masters |
| RAMS | RAMS Swim Team |
| SVY | Scantic Valley YMCA |
| SIMM | Simmons Masters |
| SMTH | Smith College |
| SCA | South Coast Aquatics Masters |
| SCY | South County YMCA |
| SSHY | South Shore YMCA |
| SVTS | Southern Vermont Stingrays |
| STMM | St Michaels Masters |
| STOW | Stowe Masters |
| SWMR | SwimRI |
| TNT | Technique and Training |
| EDGE | The Edge - Williston |
| TRIY | Try-YMCA |
| UMD | UMASS Dartmouth |
| UMAS | UMASS Aquatic Masters |
| UCLB | University Club of Boston |
| UVRA | UV Rays (White River Junction, VT) |
| WCPM | Wayland Community Pools Masters |
| WSY | West Suburban YMCA Masters |
| WTS | Westboro Tennis & Swim |
| WYM | Westerly Y Masters |
| WMW | Western Mass Waterhorses |
| WYW | Westfield YMCA Wave |
| YNS | YMCA of the North Shore SwimFit |