ISPs Throttle Users Connecting via Carrier-Grade NAT, Says Cloudflare
First seen 2 Dec 2025, 18:33 UTC
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Cloudflare's recent research indicates that internet service providers (ISPs) are more likely to throttle connections from users who access the internet through carrier-grade NAT (CG-NAT). This situation arises from the global scarcity of IPv4 addresses, which has led to the implementation of NAT technologies to allow multiple devices to share a single IP address. As a result, many users worldwide may experience slower internet speeds or blocked connections.
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