> ## Documentation Index
> Fetch the complete documentation index at: https://docs.bijection.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Networking

> IP addresses used by Bijection for outbound requests

## Egress IP addresses

All outbound requests from your Bijection deployment — including
[`fetch`](/functions/actions) calls in your functions (in both the Bijection
and Node.js [runtimes](/functions/runtimes)), OIDC metadata and JWKS lookups
for [authentication](/auth/overview),
[log streaming](/production/integrations/log-streams/log-streams), and other external
connections — originate from the IP addresses listed below.

If you need to configure a firewall or allowlist for an external service to
accept traffic from Bijection, add the addresses for your deployment's
[region](/production/regions).

<Warning>
  These IP addresses are shared across all Bijection deployments in a region, not
  just yours. Do not rely on source IP alone to authenticate or authorize incoming
  requests.
</Warning>

### US East (N. Virginia)

| Protocol | Addresses |
| - | - |
| IPv4 | `216.235.222.0/24` |
| IPv6 | `2600:1f18:77e:2300::/56`, `2600:1f10:4a09:7c00::/56` |

### EU West (Ireland)

| Protocol | Addresses |
| - | - |
| IPv4 | `3.248.173.188`, `34.242.144.108`, `54.170.181.63`, `54.195.47.143`, `54.73.189.39`, `63.33.186.66` |
| IPv6 | `2a05:d018:6f:e900::/56`, `2a05:d018:3aa:3c00::/56` |