Trigger for New Contact To Automatically Add Account Name Based On Email Domain

Apex Trigger:

    Map<String, Id> domains = new Map<String, Id>();
     
    for(Contact con: Trigger.new) {
        domains.put(con.Email.split('@').get(1), null);
    }
    for(Account acc: [SELECT Name FROM Account WHERE Name IN :domains.keySet()]) {
        domains.put(acc.Name.toLowercase(), acc.Id);
    }
    for(Contact c: Trigger.new) {
        if(domains.get(c.Email.split('@').get(1)) != null) {
            c.AccountId = domains.get(c.Email.split('@').get(1));
        } 
    }
}