How do I call this number in Japan?

Question:

We want to call the Animal Friends Niigata in Japan, and their website has the following number of 090-4624-3301. http://www.afniigata.org/english/access/ Is the website. Looking at other sites, we tried the following number on a cell phone that can call internationally. 011-81-090-4624-3301 We tried once, and it was ringing, but then it started making long beeps. At this time, it should be around 10-12 A.M. Monday morning. We're just wondering if this was the right number?

Answer:

Just omit the first 0 when calling from other countries.

Like, 011-81-90-4624-3301