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Interactive Map Shows Email Providers for Swiss Municipalities, Highlighting Digital Sovereignty Concerns

By

doener

1mo ago· 1 min readenInsight

Summary

An interactive map visualizes which email providers handle official email services for approximately 2,100 Swiss municipalities, based on DNS analysis and public network signals. The project highlights digital sovereignty concerns, particularly noting that US-based providers are subject to the CLOUD Act, which allows US authorities to access data regardless of physical location. The map makes the current provider landscape visible to raise awareness about data sovereignty issues.

Key quotes

· 4 pulled
A map of all ~2,100 Swiss municipalities showing which provider handles their official email — grouped by jurisdiction — based on public DNS records and other public network signals.
Digital sovereignty: US-based providers are subject to the US CLOUD Act, which allows US authorities to request stored data, regardless of where it is physically hosted.
This map makes the current provider landscape visible.
Each municipality's official domain is checked via 11 signals from DNS records, SMTP banner.
Snippet from the RSS feed
Interactive map showing where Swiss municipalities host their official email. DNS analysis of all ~2,100 municipalities, color-coded by provider.

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