Identification
Its full user-agent string, exactly as it arrives at the gate:
Diffbot does not publish a way to verify Diffbot's traffic. Treat its user agent as a claim, not proof: anyone can send it. Read Diffbot's documentation.
How to block Diffbot
Add these two lines to the robots.txt file at the root of your site. Well-behaved crawlers read it before they crawl, so the change applies from Diffbot's next visit. Nothing else on your site needs to change.
# Block Diffbot from the whole site User-agent: Diffbot Disallow: /
Or let it visit but keep it away from part of the site:
# Let it in, but keep it out of one room User-agent: Diffbot Allow: / Disallow: /members/
Observed behaviour
Nothing on record in the last 30 days.
Requested 0 disallowed pages out of 0 requests. Never read robots.txt.
Has never followed the hidden link to /trap/. Either well trained or very lucky.
Where it comes from
The networks Diffbot's visits came from:
Nothing on record in the last 30 days.
Networks and countries come from the visitor's IP address, looked up in a local copy of the DB-IP database. The addresses themselves are never stored.
Questions site owners ask
Does Diffbot respect robots.txt?
We can't say yet. It has not fetched robots.txt here, and it has not touched a disallowed page either.
Will blocking Diffbot hurt my search rankings?
No. Diffbot isn't used by Google or Bing to rank pages. Blocking it only affects whether Diffbot collects your content.
How often does Diffbot visit?
Here, about 0 requests a day over the last week. Visits to your site depend on its size, how often it changes, and how many links point to it.