: Do I add both www and no-www for my Domain in Google webmaster tools? When register my site to Google webmaster tools, which one should I register? mydomain.com www.mydomain.com Both?

@Sims2060225

You must register both. It will help you to verify your preferred domain and also will help to monitor both domains.

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@XinRu657

If you are serving the same content under both domain names and you do not have the option to redirect (301/permanent) visitors who land at the non-canonical domain over to your canonical domain, you should register both domains at Webmaster Tools and then set your preferred domain.

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@XinRu657

I registered mine with I suppose there isn't much of a difference between them. Using yourdomain.com or yourdomain.com is just a different referral of the A-record, but resolves the same host IP.

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