It is erratic because one of your dns server resolves your domain and the other doesn't.
As said @sahsanu your dns setup in buggy. Fix the errors showing on http://www.intodns.com/hackmasters.net and retry.
It is erratic because one of your dns server resolves your domain and the other doesn't.
As said @sahsanu your dns setup in buggy. Fix the errors showing on http://www.intodns.com/hackmasters.net and retry.