And regardless of what / who you choose make sure that they are running RFC compliant servers. There are a lot of DNS providers that feel they don't need to use RFC compliant servers which makes problems for all the resolver vendors out there. It also make it hard to deploy new features that depend on servers actually behaving as specified in the RFCs. Most of the problems I see would take 10 minutes for a developer to fix if they are not already fixed and just require a more recent version to be installed. For a list of some of the things you should be checking for see https://tools.ietf.org/html/draft-ietf-dnsop-no-response-issue-03 You can also run the EDNS compliance checker at https://ednscomp.isc.org Mark -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: marka@isc.org