Static IP

tonyg0071 — Wed, 04 Mar 2026 07:30:33 GMT

Hi,

I've used BT Business with a static IP for many years but recently it's been changing which causes issues with our FTP server connections.

Can someone please confirm if rebooting our router would cause this or if it should remain static even if the router is rebooted or we have a powercut as that has happended and could be the cause?

Many thanks

Tony

Re: Static IP

BethM — Wed, 04 Mar 2026 12:10:58 GMT

Hi tonyg0071

It should remain the same if properly set up on your router. What router are you using?

Re: Static IP

AlanM1 — Fri, 13 Mar 2026 12:43:27 GMT

Hi Tony 👋

Your static IP should remain the same, even after a router reboot or power cut, as long as it’s correctly set up on your BT Business broadband service. A reboot on its own should not cause a static IP to change.

🔍 A few things to check:

1️⃣ Are you using a single static IP or a range?
If you only have one static IP, your hub normally assigns it automatically — no extra configuration needed.
If you have a block of static IPs, the hub must be configured using the right router address and subnet. BT provides official setup guidance here:
👉 Configure Static IP on BT Business Hub [business.bt.com]

2️⃣ Has anything changed in the hub config?
Incorrect settings (e.g., turning on the Static IP toggle when you only have 1 static IP) can cause routing issues. This is a known scenario discussed by BT support:
👉 Static IP Issues – BT Business Community
https://business.forums.bt.com/t5/Broadband/Static-IP-Issues/td-p/80869
[business.f...ums.bt.com]

🛠️ If your static IP is changing

That typically means one of the following:

The hub isn’t configured correctly
The service on your account isn’t provisioned as a static IP anymore
You're actually receiving a dynamic IP due to a configuration/ordering issue

In these cases, the BT Business Technical Helpdesk can check your account and confirm the correct static IP details:
📞 0800 800 154

topic Re: Static IP in Broadband

Static IP

Re: Static IP

Re: Static IP

🔍 A few things to check:

🛠️ If your static IP is changing