Postal address:
Swedish Institute of Space Physics 
Box 537 
SE-751 21 Uppsala, Sweden

Billing address:

According to a new law, (available here in Swedish), all purchases in the public sector in Sweden should be invoiced with e-invoice as of April 2019.
There are several ways to create and send a e-invoice to IRF, for more information please see: https://www.irf.se/en/invoicing-e-invoice/.

Visiting address:
Ångström Laboratory, Lägerhyddsvägen 1
Uppsala

Delivery address:
Regementsvägen 1
SE-752 37 Uppsala

Phone number:
+46 18 471 59 02

Fax number:
Not available

E-mail address:
irf_&_irfu_dot_se, office_&_irfu_dot_se