My site used to connect to IP 1.2.3.4. Now we have move it to IP 5.6.7.8. When I check Google Webmaster Tool, I found there are enormous external links from 1.2.3.4. If I use 301 redirection from 1.2.3.4 to my site mydomain.com, can pr also transfer from 1.2.3.4 (PR5) to mydomain.com? The two domains (1.2.3.4 and mydomain.com) have the same contents. Thank you!
If the URL with the PageRank has remained the same, then the PR juice will follow it. A 301 redirect will transfer approximately 85% of the juice. Matt Cutts had some old comments on this a few years ago.
You should make sure that all requests for documents in the old domain are redirected to the new one. However IMO, directing 301s from one domain to another are a hit or miss for rankings. Most of them say that the rankings should transfer link juice / PR effectively, but IMO and experience, when you move to a new domain, at least initially, you should expect your rankings to tank. Hope you have good luck with your link juice.
Hi dropcatchsel, What I want to do is redirected my site from an IP address 1.2.3.4 to a domain mysite.com. Can the IP address transfer link juice to the domain?
backlinks can also transfer with 301 redirection, so yes PR can also go through.. it might take some time but that's normal..
OK, that clarifies what you're doing quite a bit. You're 301ing to a proper TLD from an existing IP that has PR juice. I'm not a big fan of doing a 301 if I can avoid. 301ing costs you about 15% of the juice, if Google accepts it. But, Google does treat 301ing as a negative signal. If there are other negative signals, 301ing can tip the apple cart and cause Google to blacklist the URL. I strongly prefer linking to the new URL from the old URL with a single link. In my experience, this has been less of a problem than a straight 301 redirect. Plus, you may sneak some SEO benefit from the text in the link.