We support the following formats:

xxx xxx xxxx
xxx-xxx xxxx
xxx xxx-xxxx
xxx-xxx-xxxx
xxx xxx.xxxx
xxx.xxx xxxx
xxx.xxx.xxxx
(xxx) xxx xxxx
(xxx) xxx-xxxx

1xxx xxx xxxx
1xxx-xxx xxxx
1xxx xxx-xxxx
1xxx-xxx-xxxx
1xxx xxx.xxxx
1xxx.xxx xxxx
1xxx.xxx.xxxx
1(xxx) xxx xxxx
1(xxx) xxx-xxxx

1 xxx xxx xxxx
1 xxx-xxx xxxx
1 xxx xxx-xxxx
1 xxx-xxx-xxxx
1 xxx xxx.xxxx
1 xxx.xxx xxxx
1 xxx.xxx.xxxx
1 (xxx) xxx xxxx
1 (xxx) xxx-xxxx

1-xxx xxx xxxx
1-xxx-xxx xxxx
1-xxx xxx-xxxx
1-xxx-xxx-xxxx
1-xxx xxx.xxxx
1-xxx.xxx xxxx
1-xxx.xxx.xxxx
1-(xxx) xxx xxxx
1-(xxx) xxx-xxxx


1.xxx xxx xxxx
1.xxx-xxx xxxx
1.xxx xxx-xxxx
1.xxx-xxx-xxxx
1.xxx xxx.xxxx
1.xxx.xxx xxxx
1.xxx.xxx.xxxx
1.(xxx) xxx xxxx
1.(xxx) xxx-xxxx

Unsupported formats:
Phone numbers as images.

xxxxxxxxxx
xxx xxxxxxx
(xxx) xxxxxxx
xxxxxx xxxx

Any combination of the above three with a 1, 1. or 1-
In short, we must be able to distinguish three sets of numbers grouped by 3, 3 and 4.

Be aware that the number you are trying to click has to be in plain text.  Phone numbers in a cell (you may not be able to determine until you actually hover over them) are not clickable.  This is a combination of browser and/or site owner configuration and beyond OnSIP's control.

Having trouble, questions?  Click  HERE