DNS Traversal Tool (evaluates DNS consistency)
Usage:
    curl dnsq.io/q/[domain]/[type][?full]
Help:
    curl dnsq.io
Examples:
    curl dnsq.io/q/dnsq.io
    curl dnsq.io/q/dnsq.io/aaaa
    curl dnsq.io/q/dnsq.io?full
Notes:
    Use in browser or on command line with curl/jq <3.
    Output is JSON in the form [type data ttl].
    The default output only displays answers--no answers yields {}.
    Queries A record by default.
    Only supports TCP--DNS server without TCP support will timeout.
    Chooses random root and tld--no traversal at root and tld.
    Leaves result analysis to you--purrhaps use ?full.
    Supports IPv6 for site and queries.
    No CNAME following--traverse CNAME separately.
    HTTPS records currently unsupported.
Motivation:
    Some ISPs confound debugging by intercepting DNS (UDP and TCP) and replying from their own servers. This is detectable with a dig +norecurse and finding the rd bit. Dig +trace provides a top-down query, but no traversal, and is also confounded by upstream interception. There are a number of sites that intend to provide DNS traversal, but they are generally broken and/or slow.