Hello and welcome, Fede F
You will find that different countries, and indeed different organisations, have different abbreviations.
... are commonly used - based on the Latin numero (from numerus, number).
In AE, # is often used and so is often found in places where AE-speak is understood. Members here would refer to post #23 for example.
In many UK contexts #, meaning number, would have to be explained. Those of us more exposed to US culture - either comic strips or IT manuals - have come to understand the US #, and it also seems to pass without comment in this forum.Panjandrum, does that mean that "#" is not a common symbol for number in the British isles? (and yes, "No. 5" would be readily understood to mean "Number 5" in the US)
In many UK contexts #, meaning number, would have to be explained. Those of us more exposed to US culture - either comic strips or IT manuals - have come to understand the US #, and it also seems to pass without comment in this forum.
The regular use of # for number in some BE contexts long precedes the introduction of mobile phones/ cell phones.Maybe because at least In Europe but I assume it is the case worldwide now that you use the # symbol when you have to enter a number on your mobile. Thus no doubt now everyone knows it means naturally number.
There is no single official abbreviation. There are various conventions/standards.But only official abbreviation is no. (from Latin). Others are just pure shortcuts, even though in Europe you see Nbr. or Nr. quite often I think (In French, we would still write Nbre for instance!)
If you listen to automated instructions telling phone users what button to press you will often hear 'that' key called "the hash key" in the UK or "the pound key" in the US.
The abbreviation is not used in that context. It would have to be "My tax registration number is XXXX".A point that has not been touched upon here is whether the abbreviation "No." should be capitalised:
My tax registration no. is xxx OR
My tax registration No. is xxx
To me the capitalised No. looks messy but some proofreaders seem to insist on it.
Happy New Year, Nicholas/Nico!Is "N°" actually incorrect in English? Does anybody know?
Judging by the reactions of others, particularly AmE-speakers, it seems that "N°" isn't universally accepted. Perhaps I've been influenced by my exposure to French usage.[...] Personally I prefer N°, as it avoids all possible confusion. [...]
However the problem is considerably reduced by omitting the space.[...] also, that the period should not be omitted, even informally (to avoid causing the reader to pause over the ambiguity with the word "no").