In some cases, all the posts are not appearing under a tag. One example would be those under the Australia tag. If you notice not all posts are appearing, append ?max-results=999 at the end of the url.

So as an example, page 2 for Australia looks like: https://thisisarecordingdotcom.blogspot.com/search/label/%E2%9D%BA%20Australia?updated-max=2020-01-24T00:00:00-06:00&max-results=20&start=20&by-date=false

change the url to

https://thisisarecordingdotcom.blogspot.com/search/label/%E2%9D%BA%20Australia?max-results=999

and all posts will appear.

We're sorry The long distance carrier you have selected is unable to complete your call at this time Please contact your long distance carrier for assistance ᵃᵐᵉʳᶦᵗᵉᶜʰ

We're sorry The long distance carrier you have selected is unable to complete your call at this time Please contact your long distance carrier for assistance ᵃᵐᵉʳᶦᵗᵉᶜʰ
Ameritech♂️ 1