Related terms:
itu
nanp
xxxx
dial
ofcom
xxxxxx
digits
caller
guinea
dialling
prefix
dialing
callers
phoneday
landlines
reserved
switches
slovenia
short codes
premium rate
dialing plan
initial digit
numbering plan
country code
long distance
mobile phones
telecommunication
telephone numbering plan
international access code
north american numbering plan
Wikipedia sources:
Telephone number
Premium-rate telephone number
Telephone numbering plan
UK telephone code misconceptions
Short code
Telephone numbers in the United Kingdom
List of country calling codes
Telephone keypad
Area code 408
Telemarketing
Data validation
Mass surveillance
List of mobile phone codes by country
Context for words:
telephone
numbers
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