Grammarly's AI writing assistant is inaccessible in countries that block its servers or are under US sanctions. Students, professionals, and writers in these regions use VPNs to access Grammarly's editing tools.
Grammarly is blocked in China, Iran (sanctions), Cuba (sanctions). The blocks operate at the network layer — typically a combination of DNS poisoning, IP filtering, and SNI inspection. Domestic ISPs in restricted countries are required to drop traffic to Grammarly's domains and origin servers, which is why typing the address into a browser returns a connection failure rather than a clean error message.
A VPN bypasses all three filtering methods at once. GhostShield's WireGuard tunnel encrypts every packet end-to-end, so ISPs see only encrypted traffic to a single GhostShield server IP. DNS resolves through our infrastructure, not the local ISP's. The TLS handshake happens between you and the GhostShield server — never directly to Grammarly's domains — so SNI inspection finds nothing to block. Grammarly itself sees a connection from a country where it operates normally and serves you the standard experience.