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. Binds to CCL21. Probably promotes cell chemotaxis response (By similarity). Homomer. Forms heteromers with ACKR4 (By similarity). Sulfation on Tyr-25 and Tyr-27 is essential for CXCL10 binding. N-glycosylated. Belongs to the G-protein coupled receptor 1 family.