Customer Service at a Glance

Hours of Operation

  • Our staff is here to assist you from 8:30 a.m. to 5:00 p.m. , ET, Monday through Friday. Our Sales Department is open even longer - from 8 a.m. to 6 p.m.

Holiday Closings

NTIS is closed on federal holidays: Christmas Day; Columbus Day; July 4th; Labor Day; Martin Luther King, Jr. Day; Memorial Day; New Year's Day; President's Day; Thanksgiving; and Veteran's Day.

Need help placing an order?

  • Call our Sales Department at 1-800-553-6847 or (703) 605-6000. Fax: (703) 605-6900; e-mail: orders@ntis.gov
  • TDD: (703) 487-4639, (8:30 a.m. to 5:00 p.m., ET)
  • If you want to place a subscription order, call our Subscriptions Department at 1-800-363-2068 or (703) 605-6060. Fax: (703) 605-6880; e-mail: subscriptions@ntis.gov

Want to visit our bookstore?

  • The NTIS Bookstore is open to the public from 8:30 a.m. to 5:00 p.m., ET, Monday through Friday, at 5285 Port Royal Road, Springfield, Virginia. Phone: (703) 605-6040; Fax: (703) 605-6900; e-mail: bookstore@ntis.gov. You can find directions here.


Need to speak to an NTIS representative?

  • We welcome your calls. Yes, at NTIS you can still speak to a live person. Each department listed on this page is staffed with representatives waiting to assist you.


Have a question about an order you have already placed?

  • Call our Customer Relations Department at 1-888-584-8332 or (703) 605-6050. Fax: (703) 321-7308; e-mail: customerservice@ntis.gov
  • For questions about subscription orders, call our Subscriptions Department at 1-800-363-2068 or (703) 605-6060. Fax: (703) 605-6880; e-mail: subscriptions@ntis.gov


Want to share an idea of how NTIS can better serve you? Need to express your concerns about a recent interaction with NTIS?

  • Our NTIS Customer Advocate welcomes your suggestions and inquiries and can be contacted by phone at (703) 605-6103, by fax at (703) 605-6900, or by e-mail at customeradvocate@ntis.gov


Need to know our mailing address?

  • U.S. Postal Service Deliveries:
    Office of Customer Services
    National Technical Information Service
    5285 Port Royal Road
    Springfield , VA 22161
  • All Other Express Deliveries:
    Please use 22151 zip code with the above address.


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