Yes, and you need to contact the IRS to cancel one.
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Multiple EINs are not OK for a single corporation. Mr. Doland is correct in that you need to contact the IRS and have one of those numbers cancelled.
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Yes, as noted by the prior answers from Mr. Doland and Mr. Gold, you need to contact the IRS as soon as possible to cancel one of the numbers.
The foregoing is not offered as legal advice, but is a general analysis of the situation posed by your question. I am not your attorney until I have been retained through a written retainer agreement which is signed by both of us. I am only licensed in California and make no representation as to the laws of other states.
BIG PROBLEM! You need to contact the IRS ASAP to explain the situation and then come to agreement as to which of the 2 EIN's will survive and which one will be deleted.
My answer is not intended to be giving legal advice and this topic can be a complex area where the advice of a licensed attorney in your State should be obtained.