namespace lookup API

A namespace lookup finds the namespace URI for a given prefix. You can perform lookups by entering a prefix into the box on the start page, or by using the namespace lookup API.

Query URL:{prefix}.file.{format}

{prefix} – prefix to be expanded
{format} – any of the supported formats


“Bulk lookup” of many prefixes in a single request is not supported. Please download the entire namespace data and perform bulk operations locally.