International phone number format for sending SMS text messages
When sending SMS text messages from your Connection Software
account on the website, or when using one of our APIs to send
messages, you should always use the ITU-T recommended E.164
International Phone Number Format.
The following table gives a few examples of how to convert a local number into the International Phone Number Format:
International Phone Number Formats
The recipient is in
Their country code
Their local number
Their International Phone Number Format
06 87 71 23 45
07700 954 321
Numbers that are correctly formatted:
start with the country code of the country the message is being sent to
only contain the digits 0123456789
do not contain spaces or punctuation
do not include the international dialling prefix which is often 011 (e.g.
in the USA), 00 (e.g. in Europe, South America) but is sometimes 001 (e.g.
in Japan) or 009 (in Nigeria) etc.
What happens if I send a message to a local number?
When you submit messages to us that are not in the International Phone Number Format our system will automatically convert the number into the International Phone Number Format for the country your account was registered from.
International Phone Number Format checker
Use the number checker below to convert a local number into the International Phone Number Format.
It's easy to send messages from your own application