SAN RAMON, Calif. — Zoom’s astronomical growth is tapering off along with the pandemic, raising questions about whether the videoconferencing service’s immense popularity will fade as more people return to classrooms, offices and other places that have been off limits for the past year.

The deceleration emerged in an otherwise impressive quarterly earnings report released Monday. The stellar results capped a year in which Zoom’s name became synonymous with the way millions of people have been forced to gather in online video panels while being corralled at home.

Although Zoom continued to enjoy robust gains from November through January, its subscriber increases were significantly smaller than in each of the previous three quarters that unfolded during pandemic life.

Despite that widely anticipated slowdown, both Zoom’s quarterly earnings and revenue easily topped analysts’ projections, as did management’s forecast for the February-April period and the upcoming year.