The instructions to form 4506 tell you how to process and where to mail to and is available on irs.gov. Good luck.
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4506-T requests often take several weeks to answer. If you need immediate assistance, you should contact a tax attorney. Tax attorneys and other practitioners can call the IRS practitioner priority line and may be able to secure transcripts that day. I would also suggest directly calling the IRS and asking the representative who answers.
I agree with the others. If you want the transcript right away, you can go to your local IRS office with your driver's license, and they will give you one in person.