Place Names - 7 digit instead of name

I have noticed that some members of Ancestry.com insist on quoting place names as a seven digit number. I have not been able to find what the seven digit number refers to and it is really frustrating when one of these appears in data in Ancestry.com links.

I have spent a lot of time researching this and drawn a complete blank.
Here are some examples...
1656734, Bedfordshire, England
1656790, Bedfordshire, England

They all seem to begin with 165 through 169.

Regards
Geoff