That is the MAC address of the WiFi adapter within this connected device. The MAC address uniquely identifies a WiFi adapter. The one that you have included in your post is not a recognised MAC address, please check it.
The TalkTalk Community has now moved to a peer-to-peer support model. This means that the TalkTalk team will no longer be here to support with queries. Don’t worry, there are plenty of ways to reach out if you need to speak to TalkTalk directly. For more details check out the link here How to contact TalkTalk Broadband - TalkTalk Help & Support
