A global DNS propagation checker on your CLI!
dug's querys are highly performant and as parallelizable as you want. Defaults to 200 simultaneous queries!
By default dug outputs pretty human-readable tables, but can easily be configured to provide templated JSON or CSV data. Use it in monitoring scripts or other applications!
Use the included servers or bring in your own list from local/remote sources. Control what queries are run and what servers they're run against.