DNSLookup.org is an advanced DNS lookup tool. It provides answers both to DNS Lookups (A, AAAA, MX, SOA, CNAME, NS, SRV, TXT), plus reverse lookups (PTR). You can gain additional insight, with the DNS trace and the DNSSEC analyzer.
The DNS lookup trace feature allows you to see which servers were used to provide the answer your DNS query, plus the time each server took to respond.
The DNSSEC analyzer provides an overview of the DNSSEC chain of trust, allowing you to easily see the links between DNSKEYs and DNS records.
If you have any ideas for new features or have found a bug, please get in touch.