A six-alarm inferno ripped through several Bronx row houses late Thursday into early Friday, injuring nine people and displacing nearly 100 residents, officials said.

The massive fire erupted just before midnight inside 2086 Valentine Ave., a three-story home off of East 180th Street in Fordham Heights, and quickly jumped to eight neighboring buildings.

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Flames shot through roofs and windows as over 200 firefighters across more than 50 units lined the street to battle the blaze, quashing it by 3:05 a.m.

Six firefighters and three civilians were treated for minor injuries at Jacobi Medical Center.

Health officials warned area residents to stay inside and keep windows shut to avoid the acrid smoke.

The American Red Cross directed those displaced by the fire to a makeshift relief center in the Salvation Army at 2121 Washington Ave.