How to handle a 404 without the function breaking?

Question

Basically, I have an array of emails (attemptsArray) that I look up using FullContact's API.

attemptsArray.forEach(function(attempt) {
    $.fullcontact.emailLookup(APIKEY, attempt, function(obj) {
        attemptsMade = attemptsMade + 1
        console.log(attemptsMade);
        console.log('Looking up '+attempt+' ...This is attempt number'+attemptsMade)

        if (obj.status == 200) {
            var score = obj.likelihood;
            console.log('Matched with a '+score+' likelihood')
            correctAttempts.push(obj);
        };
    });
});

However, if a 404 is returned (i.e., the email doesn't exist), it doesn't increment attemptsMade. Is there any way to ensure that this happens? I've tried doing an if (obj.status == 404) and that doesn't work either.