Visa Requirements

Before requesting a letter of invitation to the IETF-68, please visit the following site for information about visa requirements for travel to the Czech Republic for the IETF-68 meeting: Visa Requirements

Additional information on travling to the Czech Republic can be found at:
Determining Entry & Visa Requirements

If you need a visa, please remember that you should request a letter of invitation as soon as possible and to apply for your visa well in advance of your travel!


To request a letter of invitation, please send email to ietf-registrar@ietf.org.

If you have attended an IETF meeting previously, you may request a letter of invitation before you pay for your registraton. Please provide the registration ID number from the previous meeting.

If the IETF-68 is your first IETF meeting, you MUST have a paid registration before requesting your letter of invitation.

Please email the following information in your request to ietf-registrar@ietf.org:

  1. Your registration confirmation number:
  2. Full name (please indicate surname/family name, given/first name):
  3. Nationality:
  4. Passport number:
  5. Country of issue:
  6. Date of Birth (in Month Day, Year format)
  7. The names of the working groups in which you are involved:
  8. Mailing Address
  9. Phone and Fax numbers
  10. Email address
  11. Identify previous IETFs attended in last 3 years
The letter of invitation will be faxed to you once your information is verified. The original letter will also be sent via postal mail. (Delivery of which may take 4 - 7 days)

For faster delivery:
For Global Express Mail and 3 -5 day delivery the charge will be USD$25.
For Globa Express Guaranteed Document Service with 2 - 3 days delivery the charge will be USD$50.

Please provide credit card info: Name on card, CC number and expiration date with delivery selection.
You will be provided with tracking number.


IETF Secretariat - Please send problem reports to ietf-web@ietf.org.