Difference between ca-pub- and pub- AdSense publisher id

Are you confused to see the AdSense publisher id as ca-pub- in your Blogger or YouTube monetizing interface? Read this article to know the difference between ca-pub- and pub- AdSense publisher id formats.

Why is it ca-pub-xxxxxxxxxxxxxxxx to me?
AdSense has recently launched a different type of account with some limitations for all their host partner websites and has labelled as Hosted AdSense Accounts. With a hosted account, you can only monetize your Google host partner or API revenue sharing websites and these kind of accounts will bear the publisher id with an extra term “ca-” added before the actual publisher id which starts with “pub” prefixed.

How these Hosted Accounts are generated?
If you have applied for a new AdSense account using a host partner website, such as YouTube, HubPages, IndiaStudyChannel, etc., on successful approval it will get you an AdSense publisher account with a “Hosted Account” label.

My AdSense publisher account is not a hosted one. But why do I get the adcode with “ca-” prefixed on my Blogger blog?
After the new AdSense publishing account system came in exist, all your ads served at Host Partner and Google powered websites/webpages/services are generated with the hosted label publisher id format, which starts with ca- prefixed to pub-xxxxxxxxxxxxxxxx. Thus you will get adcodes on HubPages, IndiaStudyChannel, Blogger blogs, YouTube videos, Google sites and all other API revenue sharing websites with ca-pub-xxxxxxxxxxxxxxxx publisher id format.
However, if you have a full flagged AdSense publisher account, all your own websites will generate AdSense ads with the standard format publisher id, i.e. pub-xxxxxxxxxxxxxxxx as well.

So, these are the basic differences between “ca-pub-” and “pub-” AdSense publisher ids.

Posted in AdSense Help and tagged , .


Sultan Mustafijul Hoque is a web professional who is the founder of Domain Registration and Web Hosting service at HostSlicer. He is also a co-founder at Indilens News and Lead Editor at India's No. 1 Educational Portal IndiaStudyChannel. Sultan holds the technical responsibilities of this site. He is the sole developer of the theme Neo Zee Pro which giving this awesome look of the site. You can get a copy of the theme from the official theme page here. If you have any comments on the design or anything else you are welcome to post as a response in the official theme page.


  1. This is really very explanatory I had been curious about it though never bothered to search for it. But here you have dropped it to my face. Thanks for sharing this piece, I actually found your blog from your last comment on one of my post that talks about single featured post, I decided to drop by since I use the eleven40 theme and here I’m seeing a very wonderfully crafted design, You must have put in great time to come up with this awesome design.

    • I recieved many questions related to ca-pub and hence finally decided to write this post. Thanks a lot for leaving your good words for me.

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