---
slug: keine-ip-adressen
title: "Are IP addresses stored?"
category: datenschutz
locale: en
updated: 2026-10-13
keywords: ["IP address","hash","HMAC","pseudonymisation","anonymous"]
questions: ["How does Metrunio handle IP addresses and customer numbers?","IP anonymisation","Is the IP stored?","Pseudonymisation","Is the hashed email address stored?","Is an IP hash stored?"]
url: https://bench.metrunio.com/en/help/keine-ip-adressen
---

# Are IP addresses stored?

**How does Metrunio handle IP addresses and customer numbers?**

IP addresses are not stored, neither raw nor as a checksum. Metrunio processes them only in transit and to limit requests. Since 14 October 2026 Metrunio no longer forms the truncated checksum that used to sit on measurement events; existing values have been deleted. Customer numbers and email checksums you pass are likewise pseudonymised on receipt, per account.

Why no checksum any more? No query, report or export read it. Whatever has no purpose is not stored, not even as a pseudonym. Rate limiting works with the address only at the moment the request arrives.

The application logs do not contain the address either. The cloud platform’s logs outside the application are configured not to record it; details are in the privacy notice.

> **Note:** Separate from this are the checksums without an account reference from sign-in, sessions and signing the agreement in the portal. They belong to your own Metrunio account, not to the measurement data of your visitors.

## Customer numbers and email checksums

The Shopify app and the Shopware plugin send the SHA-256 of the lower-cased email address. That checksum is the same for the same address everywhere. Metrunio therefore does not store it as it arrives but first combines it with your account’s key. The same applies to a customer number from `identify()` and to any `user_id_hash` your server sends. The same shopper thus has two identifiers in two shops on Metrunio, and they have nothing to do with each other.

## Also asked

- IP anonymisation
- Is the IP stored?
- Pseudonymisation
- Is the hashed email address stored?
- Is an IP hash stored?

## Related

- https://bench.metrunio.com/en/help/was-wird-gespeichert
- https://bench.metrunio.com/en/help/welche-kennungen