Passport renewal USA: Do we need to provide ISD code in address details govt. form?

USA Indian Passport Renewal
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do we need to prefix our phone number with +91 ?

I tried putting a plus and it is not taking it. It is also not taking spaces. Suppose my phone number is 0123456789
do I put my phone number as 910123456789 ??

Same question for the US phone number, do I put it as 10123456789?

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Yes, I think it will accept without the space and without the ‘+’ sign.