Numerology, like all Gifts, skills, powers, abilities that man can do, without the aid of God, is against God.
God gives you abilities, which you use, and give the honour to God.
If you train yourself in an ability, skill etc... and don't give the glory of that to God, without feeling a restraint in yourself, it's not from God.
Numerology just like astrology, gives the impression your fate is set, and that rules out free choice, which God created us with.
Thusly numerology is not from God.