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Others have asked themselves the same questions as you, and we’re here to help answer them.
Yes, numbers starting with 400 are used for commercial calls, so that you can identify them more easily and know who is calling you.
You may also receive calls from Endesa from other numbers that do not start with 400, relating to your contracts, account management, customer service or incidents.
No. Numbers beginning with 400 can only be used to make calls, not receive them. Therefore, if you try to return a call to one of these numbers, you will not be able to contact us through it.
If you need to get in touch with us, you can do so through our usual channels. You will find all telephone numbers and contact options in our Customer Service section.