# IANA Registry Info
This data call gives access to various data sources maintained by IANA. These include:
- IANA 16-bit Autonomous System (AS) Numbers Registry (http://www.iana.org/assignments/as-numbers/as-numbers-1.csv)
- IANA 32-bit Autonomous System (AS) Numbers Registry (http://www.iana.org/assignments/as-numbers/as-numbers-2.csv)
- Etc. - the detailed list of data sources included can be seen in the methodology information of the data call. Note: Output format for the methodology information is JSON!
The data call supports a "resource" parameter which filters all results down to entries that are topologically related to the given resource.
The data is refreshed once a day to guarantee up-to-date information.
GET /data/iana-registry-info/data.json?resource=193/23
# Parameters
| Key | Value | Info | Required |
|---|---|---|---|
| resource | IP address, prefix or ASN | States the resource the data is being filtered on. | NO - if this parameter is not given the entire information is returned. |
| best_match_only | true/false | If a resource is given and this parameter is set, only the best match (which is the closest topologically) is returned. | NO - by default it is set to false. |
# Data Output
| Key | Info |
|---|---|
| load_time | Shows when the data was loaded from IANA. |
| resource | Mirrors the resource (if given) for this lookup. |
| returned | Number of entries in the result. |
| resources | Holds all the results that the lookup matches - if not filtered it will return all results from IANA. The details vary between data sources but all have in common the "description", "source" and "source_url" fields. "Description" is an added field, which tries to create a more human readable summary of the parsed data. |