Receptor for the C-X-C chemokine CXCL9, CXCL10 and CXCL11 and mediates the proliferation, survival and angiogenic activity of mesangial cells through a heterotrimeric G-protein signaling pathway. Probably promotes cell chemotaxis response (By similarity). Binds to CCL21. Homomer. Forms heteromers with ACKR4 (By similarity). Expresses in lymphoid organs and Th1 cells. Sulfation on Tyr-27 and Tyr-29 is essential for CXCL10 binding. N-glycosylated. Belongs to the G-protein coupled receptor 1 family.