CapabilitiesOutbound network
Fixed outgoing IP
Traffic leaves from a known IP address that other services can whitelist.
Short answer: 1 of 16 providers offer it fully: Runtime. With a catch: Blaxel and Modal. Checked 29 October 2026.
Who offers it
Part of Outbound network: egress, allowlists and static IP, which explains why it matters.
Fully: Runtime. With a catch: Blaxel and Modal. Not at all: E2B and Sandboxer.
A dedicated outbound address costs $5 per 30-day month.
pricing-page “A dedicated IPv4 address or a WireGuard tunnel costs $5 per 30-day month each.” Source
The catch: Dedicated addresses are in a private preview you must ask to join, and can only be attached when a machine is created.
docs-confirmed “This feature is currently in private preview and is not intended for production use.” Source
The catch: Only Team and Enterprise plans get it, and each account can create one or three gateways holding up to five addresses each.
docs-confirmed “Team Plan users can create one Proxy and Enterprise users three Proxies. Each Proxy can have a maximum of five static IP addresses.” Source
- E2BNo
Note: There is no dedicated or fixed outbound address on any plan, including Enterprise.
docs-confirmed “there are no dedicated or static egress IP addresses on any plan (including Enterprise).” Source
Note: Outbound traffic shares the host machine's address with every other sandbox on it, so other services see one shared address.
docs-confirmed “Outbound traffic shares the node's IPv4 address and IPv6 /64 with the other sandboxes on that node” Source
- Agent 37Not published
No fixed outbound address is published.
inferred “Entries are IPv4 for now.” Source
- BoatNot published
No fixed outbound address is published.
inferred “Network traffic. boat does not bill egress.” Source
- boxdNot published
No fixed outbound address is published.
inferred “A machine starts unrestricted.” Source
- Cloudflare SandboxNot published
No fixed outbound address is published.
inferred “Egress from Containers is priced at the following rates:” Source
- DaytonaNot published
No fixed outbound address is published.
inferred “block-all” Source
- InstaBoxNot published
No outbound address, fixed or shared, is published; the limits page covers only the speed cap. A third-party review says machines share one address.
not-published “Outbound bandwidth” Source
- LizardNot published
No fixed outbound address is published.
inferred “Sandbox egress has no separate per-GB charge.” Source
- MorphNot published
No fixed outbound address is published.
inferred “Typical components may include but are not limited to compute, snapshot storage, and egress.” Source
- SpritesNot published
No fixed outbound address is published.
inferred “By default, a Sprite's outbound is unrestricted” Source
- TensorlakeNot published
No fixed outbound address is published.
inferred “By default, sandboxes have outbound internet access enabled.” Source
- Vercel SandboxNot published
No fixed outbound address is published.
inferred “Exposed ports are accessible via a public URL” Source
Related
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