![]() The international dialling code for calling the UK is +44. I’m not taking any of that into account with this list, and they would need special handling.Īs noted, I am going to do this demo from the point of view of this being a UK list, so apologies if it is not but hopefully it will demonstrate the point anyway and can be adapted once you have found the required info to cover the 3-4 point list above. We have other codes in the UK such as 100 to call the operator, 118nnn for directory services, and other special numbers starting with a 1, and then there is the emergency services (i,e, 999, equivalent of 911) for example. (4) Other things to note: My list above is not exhaustive. So, if the number starts 00 it means that what follows is an international dialling code and what follows that is the national number in the territory represented by that dialling code. in the UK, and many other countries, 00 is a standard international access prefix which is the equivalent of pressing + on mobiles or other suitably equipped telephones. ![]() In the UK, all national telephone numbers begin with a single 0 followed by a non-zero followed by a series of other digits. ![]() (2) Local telephone number formats are important. Which I downloaded and extracted what I needed and turned into a CSV file. Anyway I finally settled for the following json file: Countr圜odes.json [ Maybe that was just me having a bad-search-day. I found lots of promising links, and html tables, but little in the way of easily usable downloads. (1) I was surprised at not being able to quickly find an easy-to-download list (e.g. (4) … well… some other stuff could be added depending on how robust you want the solution to be, but I’ll go with these three for demo purposes. (3) Knowledge of any additional prefix codes that can be used for international dialling, (2) Knowledge of local telephone number formats (1) A list of all available international dialling codes In order to parse telephone numbers and obtain country codes from them you need the following information: dummy data), and for the sake of my demo, they are UK numbers unless otherwise specified. However, let’s assume that the data set is exactly what it appears to be (i.e. (Back to my point about correct formatting) Now on the face of it, I would say that they look a bit like UK numbers, except that then the 1334 number would be invalid and in fact none of them are long enough to be UK numbers as the UK standardised on 11 digits for both national and mobile numbers a few years back, and even the +44 number is 1 digit too short when you remove the +44 prefix and add back the UK 0 National STD code prefix. The only thing is though, when the format of the number is essential to demonstrating how to perform the task, then ideally whilst it should be dummy data, it should still be “correctly formatted” dummy data. And that’s mostly ok, because they shouldn’t be actual VALID number that are being posted here anyway. ![]() If it is true, it tells me that you need to find out why your data source is supplying you with rubbish data The numbers that you have listed are clearly not all valid telephone numbers. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |