How do smaller regional ISPs behave differently?
Smaller and regional ISPs often differ from major providers:
Third-party blocklists: More reliance on external blocklists like Spamhaus. A listing can have outsized impact.
Simpler filtering: Less sophisticated machine learning. More rule-based decisions.
Content focus: May weight content signals more heavily than engagement.
Authentication variance: May have different or less strict authentication requirements.
Local policies: Regional compliance requirements may affect filtering.
If regional ISPs are important for your audience, test and monitor them specifically.
Local harbors have local rules. Major shipping lanes differ from regional ports.
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