If you were married in Nevada then you can get an annulment on grounds without the necessity of residency or a resident witness.  Grounds may be misrepresentation, incapacity, already married, any reasons to rescind a contract in equity, etc.

 You cannot get an annulment of a marriage outside Nevada unless you are a resident. A judge may require a prove up hearing where you and your witness have to come to Court to testify at a 10 minute hearing. Remember that if you are the party in another state and your spouse lives here and files here, you subject your property, debt, children, and support to Nevada's jurisdiction if you file an Answer here.

 Information I need would be you and your spouse's name, address, phone number and social security numbers; the date and place of your marriage; the division of any property and debts; the amount and duration of spousal support, if any, and child support; the names security numbers and birthdates of any children; and, child custody and specific visitation terms.

 If you do have children one of you will have to take the mandatory Transparenting course which is 3 hours and given in Las Vegas all the time. Contact us for the schedule of classes.  Also  Nevada State Welfare has a form required for collection of child support which requires us to list the parents' drivers licenses' numbers, employer's name, employer's address and phone number, ethnicity of parents, whether the case involves domestic violence or the need for services.