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Spy Dialer is a free reverse phone lookup service that accesses public databases of registered phone numbers to help users find information on cell phone and landline numbers and emails.
Here's a list of scammer phone numbers and area codes to avoid answering if you don't know exactly who's calling. ... Scammer phone number lookup: ... 877 numbers are toll-free numbers often used ...
An unpublished number is also excluded from directory assistance services, such as 411. Landline telephone companies often charge a monthly fee for this service. As cellular phones become more popular, there have been plans to release cell phone numbers into public 411 and reverse number directories via a separate Wireless telephone directory ...
SMS: Short Message Service (i.e. text messages) SF: Single Frequency supervision tone : US SIP: Session Initiation Protocol: US SP Lock: Unlocking: UK SS7: Signaling System 7 STD: Subscriber trunk dialling: UK and India T-CXR: T-carrier (e.g. T-1) US TAPI: Telephony Application Programming Interface TR: Tip and ring: US TSPS: Traffic Service ...
Short codes, or short numbers, are short digit-sequences—significantly shorter than telephone numbers—that are used to address messages in the Multimedia Messaging System (MMS) and short message service (SMS) systems of mobile network operators. [1] In addition to messaging, they may be used in abbreviated dialing.
Bulk messaging is the dissemination of large numbers of SMS messages for delivery to mobile phone terminals. It is used by media companies, banks and other enterprises (for marketing and fraud control) [ 1 ] and consumer brands for a variety of purposes including entertainment, enterprise and mobile marketing.
User being asked to dial a number or a send a message which helps the server identify that the number is genuine and valid. With the advent of smartphones, type 0 or type 1 SMS are also being employed to send the codes which are used to verify the genuine user. Soft tokens generated within the smartphone or push messages can also be used.
Reverse-billed SMS messages are only sent if specifically requested by the phone user; however, many unscrupulous operators will send reverse-charged messages without prior consent of the recipient, which often go un-noticed by users on Pay As You Go plans without itemised billing.