CREATE TABLE "table1_15905399_1" (
  "issuing_network" text,
  "iin_ranges" text,
  "active" text,
  "length" text,
  "validation" text
);

Question: How many validations are listed for the iin range 36?
SQL: SELECT COUNT("validation") FROM "table1_15905399_1" WHERE "iin_ranges"='36';

Question: What is the validation for iin ranges  5610, 560221-560225?
SQL: SELECT "validation" FROM "table1_15905399_1" WHERE "iin_ranges"='5610, 560221-560225';

Question: What is the length for iin range 51-55?
SQL: SELECT "length" FROM "table1_15905399_1" WHERE "iin_ranges"='51-55';

Question: Is the iin range 4 active?
SQL: SELECT "active" FROM "table1_15905399_1" WHERE "iin_ranges"='4';