Asin is from the Sanskrit aśin (अशिन् — without weapon, possibly one beyond fault) — though more commonly understood as a modern South Indian feminine name. Tamil breakthrough in M. R. Murugadoss. Ghajini (2008, Hindi remake opposite Aamir Khan) was the first Indian film to gross over ₹100 crore (US$23M) at the domestic box office — making her one of the figures of modern Bollywood's blockbuster era. Filmfare Best Female Debut Award (2009).
Asin does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Asin reduce to 7, The Seeker. This is a traditional interpretive system, not a factual claim about the name.