Namespace Utility Modules (NUM) is a DNS-based protocol for storing and retrieving structured data on the internet:

• Data can be stored for any domain name or email address
• Data can be stored for any use case, standardised use cases are defined in Modules
• Data is stored in DNS TXT records, known as NUM Records
• NUM Records are identified using NUM URIs
• NUM URIs are resolved using DNS queries, known as NUM Lookups

Querying NUM in DNS

You can query NUM using a DNS query, here's an example on Mac/Linux:

dig 0._num.numexample.com TXT

Here's an example on Windows:

nslookup -type=TXT 1._num.numexample.com

The result is:

@n=1;greeting=hello world;@L=foo
                                

We provide ready-built internet DNS servers to host and serve your NUM Records. See Products.

We also provide a NUM hosting service if you would prefer to outsource your hosting and serving of NUM records. See Services.