data registration policy: clarify stance on int vs loc

Author: exortech

source/policies/registration-data/index.md.hbs

@@ -6,7 +6,7 @@ page-path: policies/registration-data/
 og-image: opengraph/building-og.png
 og-width: 1200
 og-height: 630
-updated: 2025-05-27
+updated: 2026-02-10
 ---
 
 This policy outlines the minimum registrant data that needs to be provided to register or transfer a .eco domain. This represents a subset of the data elements listed in [ICANN’s Registration Data Policy](https://www.icann.org/resources/pages/registration-data-policy-2024-02-21-en).
@@ -41,6 +41,8 @@ On the contact entity, only the following fields are currently required:
 |contact:city|2-255|All characters are valid|
 |contact:country|2|Must conform to [ISO3166-1](https://en.wikipedia.org/wiki/ISO_3166-1)|
 
+**NOTE:** for postalInfo data, while the `int` (ASCII-only) address type is supported, the use of the `loc` (UTF-8) address type is preferred. Please only use one type of postalInfo address to minimize data duplication.
+
 ### Minimum Contact Data
 
 To summarize, the minimum registrant information required by the .eco registry is that each .eco domain should link to a single registrant contact that has the following fields provided: