Is +44 7781 470 659 a legitimate phone number?

Hi,

Is +44 7781 470 659 a legitimate phone number? When accessing either Hotmail, Norton or Yahoo Security and password settings you receive a text from +44 7781 470 659. Is this a legitimate phone number or a scammer? I tried calling this number and appeared to end up in the Sub Continent somewhere, not the UK as the +44 country code would suggest. Can anyone shed some light on this?

Regards,

Adrian