SeznamBot crawler

Here you can find some basic information about our web crawler called SeznamBot.



SeznamBot is a robot (also known as web crawler or web spider) – a program that retrieves content for our search engine. In your access logs you can identify it by this string:

  • Mozilla/5.0 (compatible; SeznamBot/3.2; +

It comes from its own IP addresses:

IPv4 IPv6
• 77.75.74.x • 2a02:598:a::78:x
• 77.75.76.x • 2a02:598:a::79:x
• 77.75.77.x • 2a02:598:2::x
• 77.75.78.x
• 77.75.79.x

and uses PTR records of the following form:


Test version

Occasionally you can come accross a test version of our SeznamBot in your access log, which you'll recognize by the following User-Agent string:

  • Mozilla/5.0 (compatible; SeznamBot/3.2-test4; +

Its IP address is and the PTR record of this version is:



Another one of our robots is the screenshot-generator. Its name is quite self-explanatory – it takes screenshots of web pages to be displayed on search engine results page. You can identify it in your access logs by this User-Agent string:

  • Mozilla/5.0 (compatible; Seznam screenshot-generator 2.0; +

IP address of the screenshot-generator is and its PTR record is

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