# Adm Code Domain

> Allowed values for the administrative code type field returned in Egon normalized address data, with the meaning of each value.

Allowed values and meanings for the administrative-code `type` field returned in normalized address payloads.

## Adm Code Types

Official administrative authority coding systems supported by Egon.

| Field | Data Type | Code | Description |
| --- | --- | --- | --- |
| type | String | 30000 | Belfiore code |
| type | String | 30021 | Istat province + municipality code |
| type | String | 30022 | Istat region code |
| type | String | 30030 | Locality CAB code |
| type | String | 30036 | Iris code |
| type | String | 30036-Description | Iris code type # Iris code description |
| type | String | 30050 | Bank of Italy code |
| type | String | 30060 | UIC code |
| type | String | 30061 | Istat state code |
| type | String | 30070 | ISO 3166-1 alpha-3 |
| type | String | 30071 | ISO 3166-1 alpha-2 |
| type | String | 30072 | ISO 3166-1 numeric |