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Contacting the MSRB

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Contact Us

You may also write, call or email:

Municipal Securities Rulemaking Board
1300 I Street NW, Suite 1000
Washington, DC 20005
Visit the MSRB.

Main Phone: 202-838-1500
Fax: 202-898-1500

For questions about MSRB Market Transparency Programs, call MSRB Support at 202-838-1330 or send an email to
Live Support: 7:30 a.m. - 6:30 p.m. ET

Email Support: 7:00 a.m. - 7:00 p.m. ET