Energy suppliers and networks
NIE Networks phone numbers
Edited by Richard BarkerChecked 13 October 2026
NIE Networks publishes 1 number for you to call on its own website. We list each one with the page it is on (1 page in all), a short quote from that page and the date we checked it.
Numbers to call NIE Networks
What each line is for, as NIE Networks describes it, with opening hours where it gives them.
- 0345 764 3643
You call them on this number
Customer helpline (Northern Ireland)
Source: “Safety Rules View All Customer Helpline: 03457 643 643” (opens in a new tab). Checked 13 October 2026.
How scams that copy energy suppliers and networks work
UK Finance says criminals pose as organisations such as utility companies, claiming you must settle a fine, pay a bill or return a refund paid by mistake. Ofgem warns that scammers may contact you by phone, text, email, social media or at your door, pretending to be from Ofgem or an energy company.
This could still be a scam call
Criminals can make their number look like a genuine one (this is called spoofing). If someone calls from this number and asks for money, bank details, a code or passwords, hang up. Then call NIE Networks back on a number you've found yourself, such as the one on their own website or on a letter or bill from them.
Safe ways to check
- NIE Networks's own contact page (opens in a new tab): Where this number is published.
- Report Fraud (opens in a new tab): Report fraud and cyber crime in England, Wales and Northern Ireland. In Scotland, call Police Scotland on 101.
- Forward scam texts to 7726 (opens in a new tab): It is free, and reports the message to your mobile provider.
- How number spoofing works: Why a genuine number on your screen does not prove who is calling.
Questions about NIE Networks’s numbers
What numbers can I call NIE Networks on?
NIE Networks publishes 1 number for the public to call. They are: 0345 764 3643 (Customer helpline (Northern Ireland)). Check the source page for each one before you call, as numbers and opening hours change.
Does NIE Networks publish a number on its own website that is not listed here? Suggest a number for NIE Networks.
Sources and checks
This page relies on:
Checked on 13 October 2026. Read how we build the directory. How we check our information. Spotted a mistake? Tell us and we will put it right.