%% You should probably cite rfc2916 instead of this I-D.
@techreport{ietf-enum-e164-dns-03,
    number =    {draft-ietf-enum-e164-dns-03},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-enum-e164-dns/03/},
    author =    {Patrik Fältström},
    title =     {{E.164 number and DNS}},
    pagetotal = 10,
    year =      2000,
    month =     aug,
    day =       7,
    abstract =  {This document discusses the use of the Domain Name System (DNS) for storage of E.164 numbers. {[}STANDARDS-TRACK{]}},
}