A VPN that works perfectly in most countries can stop connecting entirely within days of being used in Iran. This isn't random bad luck — it's the direct result of active, ongoing network filtering that specifically targets VPN traffic, not just individual websites. Here's what actually determines whether a VPN keeps working, and what to look for.
Most consumer VPNs (including the free ones bundled into browsers) use protocols like plain OpenVPN or IKEv2 with a small, static pool of server IPs. Iran's filtering infrastructure uses deep packet inspection (DPI) to recognize the distinctive "signature" of these protocols, and maintains blocklists of known VPN server IPs — both of which are straightforward to detect and block once a provider's server range becomes known. A VPN that isn't specifically built to resist this gets progressively slower or fully blocked as its servers get identified, often within days of a spike in usage.
The single biggest factor is protocol choice. VLESS over Xray, run behind TLS, is built specifically to make VPN traffic indistinguishable from ordinary encrypted web browsing (HTTPS) — rather than having a detectable pattern DPI can flag. This is covered in depth in our breakdown of V2Ray, Xray, and VLESS and our full protocol comparison.
Even a well-obfuscated protocol eventually gets flagged if the same server IPs stay in use indefinitely. A provider that actively rotates and adds new server IPs keeps ahead of blocklisting instead of going quiet once existing servers get caught.
Encryption hides the contents of traffic, but the provider itself can still see connection metadata unless it has a real no-logs policy — not just a marketing claim. This matters more in a high-censorship context than almost anywhere else.
International card payments frequently fail for users in Iran due to banking sanctions, which rules out most VPNs' checkout flow before the technical side even matters. A provider needs to support payment methods that are actually reachable — locally-friendly card processing and cryptocurrency, at minimum.
A single subscription that only covers one device forces a choice between phone and laptop. Look for a plan that covers a household's real device count, not just one.
Freemiga runs on VLESS over Xray with TLS by default (see our overview of how the protocol, encryption, and feature layers fit together), rotates server IPs to stay ahead of blocklisting, and keeps a strict no-logs policy. Signup takes no personal ID, payment works by card or crypto, and every new account gets a free 30 GB / 30-day trial — enough to genuinely test the connection before committing to a plan.
This almost always means the provider's server IPs got added to a blocklist, or its protocol's traffic signature got flagged by DPI. Providers that don't actively rotate server IPs or use DPI-resistant protocols are the most exposed to this.
No. A VPN routes existing internet traffic through an encrypted tunnel — it cannot restore connectivity if the underlying internet access itself is cut off entirely. VPNs help against filtering and throttling, not a total shutdown.
It depends entirely on the provider. A trial worth using gives full access to the same servers and protocol as a paid plan, just for a limited time or data amount — enough to confirm real-world stability on your own network before paying.
Every new Freemiga account includes a free 30 GB / 30-day trial, no card required. Compare Freemiga's VPN plans and test the connection for yourself.
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