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Telephone number verification (or validation) services are online services used to establish whether a given telephone number is in service. They may include a form of Turing test to further determine if a human answers or answering equipment such as a modem , fax , voice mMail or answering machine .
For example, consider an address book entry that represents a single person along with zero or more phone numbers and zero or more addresses. This could be modeled in an object-oriented implementation by a "Person object " with an attribute/field to hold each data item that the entry comprises: the person's name, a list of phone numbers, and a ...
Format checks. Each of the first 9 digits must be 0 through 9, and the 10th must be either 0 through 9 or an X. Check digit. To detect transcription errors in which digits have been altered or transposed, the last digit of a pre-2007 ISBN must match the result of a mathematical formula incorporating the other 9 digits (ISBN-10 check digits).
Mobile phones use geographic area codes (two digits): after that, all numbers assigned to mobile service have nine digits, starting with 6, 7, 8 or 9 (example: 55 15 99999–9999). 90 is not possible, because collect calls start with this number.
The A (territorial area code) can be 1 to 5 (for geographic-based numbers, according to location: Paris/Suburbs, northwest France, northeast France, southeast France, and southwest France, respectively), and it designates nationwide numbers when it is 6 or 7 (mobile numbers), 8 (special numbers), or 9 (phone over IP over xDSL/non-geographic ...
The rivalry between No. 6 Notre Dame and No. 17 Army is back and it has major playoff implications.. The Fighting Irish (9-1) and the Black Knights (9-0) will face off against each other at Yankee ...
Worldwide distribution of country calling codes. Regions are coloured by first digit. Country calling codes, country dial-in codes, international subscriber dialing (ISD) codes, or most commonly, telephone country codes are telephone number prefixes for reaching telephone subscribers in foreign countries or areas via international telecommunication networks.
Two trendy areas in finance — fintech and private credit — are coming together in a new multibillion-dollar joint venture.