Actually...many of the Northwest bound flights OUT of JFK/EWR are often routed over CAM (near Albany NY) or over SYR. If they are on 132.175, then they would be more southern and perhaps over BUF or YYZ...but the international flights are usually more northerly. They route over GAYLE (N departure fix from NY Tracon). If they go the CAM route then the progression is after NY Approach: 132.6 (ZNY) -> 125.575 (Boston Center - no feed there) -> 135.325 -> 128.325 (Both covered by ZBW-CAM feed) -> 135.7/118.825 (MPV Feed) -> 134.4 (Montrael Center (No Feed)) then north...
IF routed over SYR, the radio route is: 132.6 -> 124.125 (Boston Center - RKA10 feed) -> 123.875 (Boston Center - UCA feed), then Toronto Center 134.57...or if slightly more westerly (ROC or BUF) they will overfly Cleveland Center for a bit (120.625) before heading into Toronto Center.
NorthEASTERLY Intl departures from NYC will go 134.0 -> 126.225 -> 133.45 or 134.95 then to Moncton Ctr. OR 135.8 -> 128.75 -> 133.45 -> Moncton. All these freqs have feeds.
Hope this helps...happy listening!