CREATE TABLE table_45491 ("Company name" TEXT, "Network brand name" TEXT, "Country" TEXT, "Accreditation type" TEXT, "Accreditation level" TEXT, "Date" TEXT)

What is the accreditation level of the network brand Movistar?
SELECT "Accreditation level" FROM table_45491 WHERE "Network brand name" = 'movistar'
SELECT "Accreditation level" FROM "table_45491" WHERE "Network brand name" = 'movistar'