Comcast saw reports on Slashdot of errors resolving the 021yy.org domain name. Upon investigation it appears the domain is improperly delegated to the authoritative servers for this domain (one of which is ns1.booen.com). Specifically if we query ns1.booen.com and ask for the SOA record, the answer does not say “021yy.org” in the authority section, but rather booen.com. This is a non-authoritative answer, which is not how an authoritative server should work. Furthermore, if we query ns1.booen.com and ask for the NS records for 021yy.org, the server gives an NXDOMAIN response, rather than the authoritative nameservers for the domain, which results in an incorrectly delegated and incorrectly configured zone.
So, in short, and contrary to claims made in Slashdot, Comcast is not blocking access to 021yy.org, and nothing is wrong with our DNS servers. Rather, we recommend that the authoritative DNS administrator work to fix their DNS records and work with their DNS server software vendor to make their server DNS protocol compliant. As a side note we recommend the domain owner increases the TTL on their A and AAAA RRs from just 60 seconds to enhance cache-ability. We’re happy to assist in that process if needed; just use our contact form on this website.