Asunción is the Spanish word for "assumption" — the Assumption of the Virgin Mary into heaven, the Catholic feast on August 15.
Asunción is widely used in Spain and Latin America.
Asunción 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 Asunción reduce to 3, The Communicator. This is a traditional interpretive system, not a factual claim about the name.