Calling Japan from US VOIP number

Post date: 2020-01-15 02:47:25

I'm trying to make a call to Japan using a VOIP phone, but just can't get it to go through. What am I doing wrong?

Hi AskMeFi,

I'm trying to make a call to Japan using a VOIP phone, but just can't get it to go through. The local Japanese number is:
03-xxxx-xxxx

Since I'm calling from overseas (my VOIP number is American), it was suggested that I add Japan's country code (81) and remove the zero, which is only used when calling locally:
813-xxxx-xxxx

I've tried dialing this, and it won't work.

Google says that when calling Japan, one should add the US exit code (011) before dialing the country code, which makes it:
011-813-xxxx-xxxx

This also won't work.

As this is a VOIP number from which I'm calling, I've tried adding a + before each variation of the number, which is what I need to do when calling from this number in general (+1 212 xxx xxxx, etc):
+813-xxxx-xxxx
+011-813-xxxx-xxxx

Neither of these will work.

Just to cover all my bases, I've also tried each of these without removing the zero:
8103-xxxx-xxxx
011-8103-xxxx-xxxx
+8103-xxxx-xxxx
+011-8103-xxxx-xxxx

So to recap - these are the variations I have tried:
813-xxxx-xxxx
+813-xxxx-xxxx
011-813-xxxx-xxxx
+011-813-xxxx-xxxx
8103-xxxx-xxxx
+8103-xxxx-xxxx
011-8103-xxxx-xxxx
+011-8103-xxxx-xxxx

This is a very important phone call on which the next year or more of my life is depending, so I would love some help please.

What is the correct way to call Japan from a US VOIP phone number?

Thank you,
Hot Tea

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