---
title: Add datacenter parameter to HSAPI
summary: null
url: >-
  https://www.fastly.com/documentation/reference/changes/2026/01/hsapi-datacenter-param
---

You can now use the `datacenter` parameter in the [Historical Stats API](https://www.fastly.com/documentation/reference/api/metrics-stats/historical-stats/) to filter response data by POP. You can provide a single POP (e.g. IAD) or a comma separated list of POP codes (e.g. IAD,SYD) for the `datacenter` parameter.