Geo-restriction sounds simple: check the visitor's country, allow or deny. In practice the naive version fails immediately, because the same IP geolocation you rely on is trivially faked with a VPN. Here's how to enforce regional access that actually holds.
Why naive geo-blocking breaks
Geo-restriction uses IP geolocation to decide a visitor's country. But a VPN or proxy relocates the apparent IP to whatever region the user wants. So "block everyone outside Region X" becomes "block everyone who hasn't installed a VPN" — which is no protection at all.
Check whether an IP is masking its location
The fix: geolocation + anonymiser detection
Enforce two checks together:
- Geolocation — what country does the IP map to? Via IP geolocation.
- Anonymiser detection — is the IP a VPN, proxy or Tor exit? Via the VPN detection API and proxy detection API.
The rule becomes: allow only when the location is in-region and no anonymiser is present.
| Location | Anonymiser? | Access |
|---|---|---|
| In-region | None | Allow |
| In-region | VPN/proxy/Tor | Deny or challenge (location untrusted) |
| Out-of-region | Any | Deny |
This closes the loophole: appearing to be in-region via a VPN no longer works, because the anonymiser flag overrides the geolocation. See how to verify a user's real location for the general pattern.
Implementation notes
- Check server-side before serving restricted content.
- Decide your strictness. Hard-deny for licensing; challenge/verify where some friction is acceptable.
- Log anonymiser denials for compliance evidence.
- Tune confidence. Use the VPN/proxy confidence score to avoid over-blocking edge cases like corporate egress.
A note on fairness
Some users run VPNs for privacy, not bypass. If your use case allows it, prefer a clear challenge ("VPN detected — disable it to access region-locked content") over a silent block, so legitimate users understand what to do.
Bottom line
Geo-restriction only works when paired with VPN and proxy detection. Allow access only when the IP is both in-region and not an anonymiser; otherwise treat the location as untrusted. That closes the VPN-bypass loophole that defeats geolocation-only blocking.
FAQ