as far as one knows

Adverb

idiomatic not-comparable

(idiomatic) To the best of one's knowledge, as far as someone knows about the topic, subject, aspect, or situation.

Japanese Meaning

私の知る限りでは / 知る限りにおいて / 現時点での知識に基づく限りでは

The records, as far as one knows, were lost in the fire last decade.

私の知る限りでは、その記録は十年前の火事で失われました。

Sense（1）

(idiomatic) To the best of one's knowledge, as far as someone knows about the topic, subject, aspect, or situation.

John could be dead as far as I know.