<b>a) I also can be reached <span style="color:#ff0000;">at</span> phone # 123456.</b><br/><br/><b>b) I also can be reached <span style="color:#ff0000;">on</span> phone # 123456.</b><br/><br/><b>I wonder which one is correct. Or both are correct. <img class='emoticon' style='Width:19px;Height:19px;' data-delaysrc='https://uat-englishforward-forums-backend.s3.us-west-2.amazonaws.com/Emoticons/37.gif' src='https://uat-englishforward-forums-backend.s3.us-west-2.amazonaws.com/Emoticons/37.gif' alt='Emotion: thinking'/></b>