There’s now millions of US telephone numbers written as +1 (0) xxx xxx xxxx if you search in Google for [tel “+1 (0)” usa] with the quotes and spaces typed exactly as shown.
That’s completely crazy, because the US does not use an initial zero trunk code at all!
It has happened because very many people in Europe, and especially the UK, automatically add an unwanted (0) directly after the +XX country code, without thinking.
They now do it for all international numbers, from any country, without any thought as to why they do it, and without checking whether the country in question uses a trunk code.
The millions of malformed US telephone numbers shown in this example Google search are mostly to be found on non-US websites.