Calls from Stats Canada
They use a large range of numbers in their outbound calls.  Likely each and every desk in the call centre has it's own direct number.

All the numbers they have tried to get me with from my call logs:
"STATS CANADA" <7804953379>
"STATS CANADA" <7804953457>
"STATS CANADA" <7804953847>
"STATS CANADA" <7804954610>
"STATS CANADA" <7804954613>
"STATS CANADA" <7804954614>
"STATS CANADA" <7804954617>
"STATS CANADA" <7804954760>