Hello Mozzers, and happy Monday!

My name is Brad Friedman, Technical Lead for Mozscape, and I'm happy to announce that we've released a brand new Mozscape index for April. You can find fresh, new data across all of our apps. Check out Open Site Explorer, the Mozbar, your PRO campaigns, and the Mozscape API.

We've reduced our index crawl time to just eleven days for this release! Thanks to our Big Data wizards on the processing team, Douglas Vojir and Martin York, for improving the freshness of our metrics! You can read more details on our technical improvements in this post from February.

We started processing this index on Wednesday, April 10, so the metrics will reflect crawl data from the end of March and the first week of April.

Here are the numbers for this latest index:

• 88,973,525,592 (88 billion) URLs
• 9,077,621,093 (9.1 billion) Subdomains
• 161,124,038 (161 million) Root Domains
• 887,067,310,285 (887 billion) Links
• Followed vs. Nofollowed
  • 2.15% of all links found were nofollowed
  • 56.0% of nofollowed links are internal
  • 44.0% are external
• Rel Canonical - 15.08% of all pages use a rel=canonical tag
• The average page has 76 links on it
  • 65.05 internal links
  • 11.02 external links

And these are the correlations with Google's US search results:

• Page Authority - 0.36
• Domain Authority - 0.19
• MozRank - 0.24
• Linking Root Domains - 0.30
• Total Links - 0.25
• External Links - 0.29

All this delicious data! What a great way to start off the week, huh?

Follow our planned update schedule on our Mozscape calendar, and you can check out the metrics on our previous releases here.

We're happy to answer your questions or read your feedback! Feel free to leave your comments here on this thread, or you can reach me on Twitter (@brad_friedman).