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:
  • 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:

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: 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:
  • For questions about subscription orders, call our Subscriptions Department at 1-800-363-2068 or (703) 605-6060. Fax: (703) 605-6880; e-mail:

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

To view the NTIS Customer Advocate’s Corner newsletter, click on the issue listed below.  Information on subscribing is included on the last page of this free newsletter.

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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