I have got notification in google console that many pages index in google search engine with URL like “?page=” and “&page=”.
When I check following pages then could not find the Noindex
response headers on the Headers tab, ( x-robots-tag: noindex)
Please check below example for your reference.
https://meta.discourse.org/c/howto/faq/4?page=2
Above URL has canonical tag declared as below but still its indexed.
https://meta.discourse.org/c/howto/faq/4
Please do Search Query in Google for reference:
https://meta.discourse.org/c/howto/faq/4?page=2
There are 3 pages Indexed in Google with same canonical tag.