He also used a credit card that matched the address he was using.
Labour have been contacted for comment.
Al Jazeera, the Qatari-based television channel, has been running a four-part investigation this week, alleging Israeli influence in British politics.
The documentary features footage secretly filmed by “Robin Harrow”.
Mr Masot was dismissed from his embassy role after footage, filmed by the journalist, emerged of him saying he wanted to "take down" Foreign Office Minister Sir Alan Duncan.