ccTLDs Can Target Other Countries Using Hreflang But Not Geotargeting
ccTLDs can use hreflang to target pages to different countries but they can’t geotarget those pages for other different countries.
Noindexing Some Pages with Hreflang Tags Won’t Affect Whole Configuration
It’s fine to noindex some pages within a set which have hreflang tags implemented. The noindexed URL will simply be removed from the set that Google uses, without affecting the other pages.
IP Addresses Are No Longer Used For Geotargeting or Local SEO
Server IP addresses used to be a signal in the early days of Google’s geotargeting. Now Google uses ccTLD, generic TLD, hreflang, as well as settings in Google My Business and Google Search Console in combination to infer geotargeting information which is much more useful than a single IP.
Using Country Code Rather than x-default for Hreflang is Easier to Manage
When specifying the main language version of a site, having the x-default language code or the specific language code is the same to Google, but defining the language code is easier for site owners to keep track of.
There are Several Options For Different Country Versions of Product Pages
en-eu Hreflang Tags Aren’t Officially Supported Even Though They Can be Picked Up
Google has been able to pick up some instances of using the not officially supported ‘en-eu’ hreflang country code, but it isn’t used for anything. John doesn’t recommend using it.
Google Doesn’t Support Hreflang Links in Anchor Tags
Google doesn’t support hreflang links in anchor tags. John recommends implementing hreflang in the head of a page, in the HTTP header or in a sitemap file because it is complicated enough already without including it elsewhere on a page.
Hreflang Should be Between Pages of the Same Format
Hreflang links should be between the same formats of pages e.g. including hreflang links between AMP pages and separate mobile pages.
Hreflang Should be Included Between the Canonical Versions of Pages
Including hreflang on paginated pages is fine but the most important thing is to include hreflang tags between the canonical versions of the page.