T-Mobile eNB 879491/879493/879494 on the keep site map is located at 40.77536940167816, -73.92011957697034.
Sprint eNB 5762 is now T-Mobile eNB 306271.
Located at 40.582064139078206, -74.16175767702059
Weirdly both of the new Sprint conversions that have been found in Staten Island (eNB 306271 and eNB 326459) were sites I visited earlier this summer but neither of them were broadcasting the keep PLMN at the time. In fact, Sprint eNB 5762 was completely offline when I visited. I suspected both sites were keep sites based on their location relative to neighboring T-Mobile sites so I was surprised when I didn't spot 312-250 coming from them. Glad to see T-Mobile still kept them.
Also T-Mobile isn't done with non-conversion new builds in the city. T-Mobile eNB 894075 is a brand new site added this summer on Rockefeller University's campus in Manhattan. It gives me hope for neighborhoods like Red Hook and Williamsburg that desperately need sites along the waterfront.
Nearly every site I encountered in the Bronx was running N41 SA. Consistent pings in the low teens and speeds were actually great.
Sprint eNB 9294 got converted but isn't live yet.
Location: 40.83091697219704, -73.8178106151994
Sprint eNB unknown, now T-Mobile eNB 310677
Sprint eNB Unknown, now T-Mobile eNB 894775. Bonus speed test with 2CA and N41 SA.
Location: 40.8989406640668, -73.84564472722599
Sprint eNB Unknown, now T-Mobile eNB 894854.