Keeping with the prepositions theme (a rich lode), British and American speakers use different ones when referring to the telephone. To be more precise, on both sides of the Atlantic we talk about calling on the phone, on a mobile, or on a particular day of the week; and we all say, “Call me at noon.” However, they say, “Call me on 555-555-5555,” while we say, “Call me at” a specific number. Or, we did do; the British on is creeping in.
I don’t have many published references, since this is very much a conversational deal. However, Stephen Hunter’s 2009 novel “Night of Thunder” contains this voice-mail message by a character: “Nick, Swagger. I have to run something by you and sooner would be so much better than later. Call me on this number please, bud.” And the internet is full of instructions such as this one, from performance-anxiety.org: “Call me on 1-888-512-2913 or use the contact form here to request a callback …”
Finally, the rapper known as C-Murder (who is currently serving life imprisonment following his conviction for a second degree murder committed in 2002) has the following lyric in his song “Betya”:
You can call me on 1-900-break bread
Or 1-800-getting paid but don’t tell
Or imma send Cut Boy to rang yo bell