SELECT ISINNET( '172.16.1.193', '172.16.1.0', 24 );
SELECT ISINNET( '172.16.1.193', '172.16.1.0/24' );
-- 	==> 1
SELECT ISINNET( '172.16.1.193', '172.16.1.0', 25 );
SELECT ISINNET( '172.16.1.193', '172.16.1.0/25' );
-- 	==> 0
SELECT ISINNET( '172.16.1.193', '172.16.1.0', '255.255.255.0' );
SELECT ISINNET( '172.16.1.193', '172.16.1.0/255.255.255.0' );
-- 	==> 1
SELECT ISINNET( '172.16.1.193', '172.16.1.0', '255.255.255.128' );
SELECT ISINNET( '172.16.1.193', '172.16.1.0/255.255.255.128' );
-- 	==> 0

CREATE TABLE ip_add (
        ip      varchar( 15 )
);
INSERT INTO ip_add VALUES('172.16.1.40');
INSERT INTO ip_add VALUES('172.16.1.93');
INSERT INTO ip_add VALUES('172.16.1.204');
INSERT INTO ip_add VALUES('172.16.4.203');
INSERT INTO ip_add VALUES('172.16.4.205');
INSERT INTO ip_add VALUES('172.16.4.69');
INSERT INTO ip_add VALUES('10.0.1.204');
INSERT INTO ip_add VALUES('10.0.1.16');
INSERT INTO ip_add VALUES('10.1.0.16');
INSERT INTO ip_add VALUES('192.168.1.5');
INSERT INTO ip_add VALUES('192.168.1.7');
INSERT INTO ip_add VALUES('192.168.1.19');

SELECT ip FROM ip_add WHERE ISINNET( ip, '172.16.1.0', 16 );
SELECT ip FROM ip_add WHERE ISINNET( ip, '172.16.1.0/16' );
--	172.16.1.40
--	172.16.1.93
--	172.16.1.204
--	172.16.4.203
--	172.16.4.205
--	172.16.4.69

SELECT ip FROM ip_add WHERE ISINNET( ip, '172.16.1.0', 24 );
SELECT ip FROM ip_add WHERE ISINNET( ip, '172.16.1.0/24' );
--	172.16.1.40
--	172.16.1.93
--	172.16.1.204

SELECT * FROM ip_add WHERE NOT ISINNET( ip, '128.0.0.0', 1 );
SELECT * FROM ip_add WHERE NOT ISINNET( ip, '128.0.0.0/1' );
--	10.0.1.204
--	10.0.1.16
--	10.1.0.16

DELETE FROM ip_add WHERE NOT ISINNET( ip, '128.0.0.0', 1 );
DELETE FROM ip_add WHERE NOT ISINNET( ip, '128.0.0.0/1' );

SELECT * FROM ip_add;
--	172.16.1.40
--	172.16.1.93
--	172.16.1.204
--	172.16.4.203
--	172.16.4.205
--	172.16.4.69
--	192.168.1.5
--	192.168.1.7
--	192.168.1.19