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Contact us

Have a general question or concern? Call our help line at 703-292-8050 or email us at

Award fraud or abuse

If you’re concerned about fraud or abuse with any award, contact the NSF Office of the Inspector General at 703-292-7100 (business hours) or 703-244-4443 (to speak to the duty officer).

You can also report fraud to the anonymous fraud hotline at 800-428-2189, email, or send written correspondence to 4201 Wilson Boulevard, Suite 1135; Arlington, VA 22230; ATTN: OIG hotline.

Site feedback

Notice something wrong with the site or want to make a recommendation? Open an issue in our GitHub repository. Please provide a detailed description of the problem you encountered (along with screenshots and steps we can take to reproduce the error) or the change you’re suggesting. You can also share feedback using this form or by emailing us at We’ll respond as quickly as possible — usually within a few business days.