IP addresses for your firewall

There are two directions, and each has its own addresses: where our requests to you come from, and where your systems connect to us. Every address on this page is reserved for Interconnect-Solutions and stays the same when our services are redeployed. If one ever has to change, we announce it in advance.

Main addresses are in use now, all of them at once. A reserve address is where we switch if the main ones fail, and it may carry no traffic today. Add it in advance, so that the switch needs nothing from you.

Requests from us to you: webhooks

Delivery reports, incoming messages and other notifications that Interconnect-Solutions sends to your notification URL come from these addresses:

Address	Role
138.68.127.125	Main

For carriers and providers: our connections to you

If Interconnect-Solutions sends traffic through you — binds to your SMSC over SMPP or calls your HTTP API — allow these addresses on your side:

Connection	Address	Role
SMPP to your SMSC	35.204.59.96	Main
SMPP to your SMSC	138.68.127.125	Reserve
Requests to your HTTP API	138.68.127.125	Main

Each is a single address, not a range.