Phailin is from the Thai ไพลิน (Phailin — sapphire). Phailin is one of the Thai feminine names — central to traditional Thai Indigenous Theravada Buddhist heritage. Thai feminine name reflecting Thai gemstone heritage.
Phailin 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.
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In Pythagorean numerology the letters of Phailin reduce to 6, The Nurturer. This is a traditional interpretive system, not a factual claim about the name.