Seznam · Indexing

SeznamBot

Identify SeznamBot by its user agent. Check request identity, review robots.txt controls and track visits in Aiola Analytics.

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Key facts

User-agent token: SeznamBot
Indexing: Crawled for AI or search indexing.
Seznam publishes official IP ranges; verify requests against them.

What SeznamBot is

SeznamBot retrieves and refreshes pages for Seznam's search engine. Seznam publishes IPv4 and IPv6 ranges in JSON and documents fulltextrobot hostnames under seznam.cz.

In Aiola's taxonomy, Indexing means crawled for ai or search indexing.

SeznamBot user agent

Look for the match token inside the complete HTTP User-Agent header. Tokens can be spoofed, so use the network checks below for authentication.

Full example User-Agent
Mozilla/5.0 (compatible; SeznamBot/4.0; +https://o-seznam.cz/napoveda/vyhledavani/en/seznambot-crawler/)
Case-insensitive match token
SeznamBot

Official IP ranges

Seznam publishes an official IP range list. This cached snapshot contains 92 CIDR prefixes, last fetched 2026-10-23. Open the live source

Official IP range snapshot
2a02:598:64:8a00::302:340/123
2a02:598:64:8a00::302:360/123
2a02:598:64:8a00::302:380/123
2a02:598:64:8a00::302:3a0/123
2a02:598:64:8a00::302:3c0/123
2a02:598:64:8a00::302:3e0/123
2a02:598:64:8a00::302:500/123
2a02:598:64:8a00::302:520/123
2a02:598:64:8a00::302:540/123
2a02:598:64:8a00::302:560/123
2a02:598:64:8a00::302:580/123
2a02:598:64:8a00::302:5a0/123
2a02:598:64:8a00::302:5c0/123
2a02:598:64:8a00::302:5e0/123
2a02:598:64:8a00::302:600/123
2a02:598:64:8a00::302:620/123
2a02:598:64:8a00::302:640/123
2a02:598:64:8a00::302:660/123
2a02:598:64:8a00::302:680/123
2a02:598:64:8a00::302:6a0/123
2a02:598:64:8a00::302:6c0/123
2a02:598:64:8a00::302:6e0/123
2a02:598:64:8a00::f00:0/123
2a02:598:96:8a00::1200:100/123
2a02:598:96:8a00::b00:100/123
2a02:598:96:8a00::b00:120/123
2a02:598:96:8a00::b00:140/123
2a02:598:96:8a00::b00:160/123
2a02:598:96:8a00::b00:180/123
2a02:598:96:8a00::b00:1a0/123
2a02:598:96:8a00::b00:1c0/123
2a02:598:96:8a00::b00:1e0/123
2a02:598:96:8a00::b00:200/123
2a02:598:96:8a00::b00:220/123
2a02:598:96:8a00::b00:240/123
2a02:598:96:8a00::b00:260/123
2a02:598:96:8a00::b00:280/123
2a02:598:96:8a00::b00:2a0/123
2a02:598:96:8a00::b00:2c0/123
2a02:598:96:8a00::b00:2e0/123
2a02:598:96:8a00::b00:300/123
2a02:598:96:8a00::b00:320/123
2a02:598:96:8a00::b00:80/123
2a02:598:96:8a00::b00:a0/123
2a02:598:96:8a00::b00:c0/123
2a02:598:96:8a00::b00:e0/123
77.75.72.26/32
77.75.73.26/32
77.75.76.160/32
77.75.76.161/32
77.75.76.162/32
77.75.76.163/32
77.75.76.164/32
77.75.76.165/32
77.75.76.166/32
77.75.76.167/32
77.75.76.168/32
77.75.76.169/32
77.75.76.170/32
77.75.76.171/32
77.75.76.172/32
77.75.77.101/32
77.75.77.109/32
77.75.77.17/32
77.75.77.32/32
77.75.77.36/32
77.75.77.54/32
77.75.77.62/32
77.75.77.72/32
77.75.77.95/32
77.75.78.160/32
77.75.78.161/32
77.75.78.162/32
77.75.78.163/32
77.75.78.164/32
77.75.78.165/32
77.75.78.166/32
77.75.78.167/32
77.75.78.168/32
77.75.78.169/32
77.75.78.170/32
77.75.78.171/32
77.75.78.172/32
77.75.79.101/32
77.75.79.109/32
77.75.79.17/32
77.75.79.32/32
77.75.79.36/32
77.75.79.54/32
77.75.79.62/32
77.75.79.72/32
77.75.79.95/32

Verify a SeznamBot request

For SeznamBot, compare the source IP from your trusted edge or server against Seznam’s current published prefixes.

Test one CIDR in Python (replace REQUEST_IP)
python3 -c 'import ipaddress; print(ipaddress.ip_address("REQUEST_IP") in ipaddress.ip_network("2a02:598:64:8a00::302:340/123"))'

Test every current prefix in the vendor feed and re-fetch it regularly. This cached snapshot is evidence of publication, not a permanent firewall list.

Control SeznamBot with robots.txt

Seznam documents crawler controls for this bot family. Robots.txt can direct cooperative crawling, but it cannot prove that a request is authentic.

Allow SeznamBot
User-agent: SeznamBot
Allow: /
Block SeznamBot
User-agent: SeznamBot
Disallow: /

Read official crawler documentation

Aiola Analytics

See every SeznamBot visit on your site

Aiola tracks 70 AI, search and link-preview crawlers next to your human traffic. See when SeznamBot arrives, which pages it requests and how that changes over time. Hosted Analytics needs Pro or a trial.

Download AiolaSet up bot tracking
Aiola Analytics showing AI crawler visits by bot and page

Common questions

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