%% You should probably cite draft-wing-dnsop-structured-dns-error-page instead of this I-D.
@techreport{reddy-dnsop-error-page-07,
    number =    {draft-reddy-dnsop-error-page-07},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-reddy-dnsop-error-page/07/},
    author =    {Tirumaleswar Reddy.K and Neil Cook and Dan Wing and Mohamed Boucadair},
    title =     {{DNS Access Denied Error Page}},
    pagetotal = 14,
    year =      2021,
    month =     apr,
    day =       21,
    abstract =  {When a DNS server filters a query, the response to such query conveys no detailed explanation that elaborates why that query was blocked, leading thus to end-user confusion. A solution to this problem is needed in order to enhance the user experience. This document defines a method to return an URI that explains the reason why a DNS query was filtered by a DNS server.},
}