aiohttp

http-library aiohttp

Asynchronous HTTP client library for Python

About this crawler

aiohttp is a web crawler identified by the regular-expression pattern aiohttp in the User-Agent request header. It is categorised as http-library. Use the regex above to detect, log, allow, or block aiohttp traffic in your web server, CDN edge rules, or robots.txt.

Block-rate · top 25k sites

0.065%
latest snapshot
2026-05-28
matched key: aiohttp
2026-05-082026-05-280.11%

Technical details

Name
aiohttp
Pattern
aiohttp
Tags
http-library
Reference
https://docs.aiohttp.org/en/stable/
Added
2019/12/23
Instances
3 known sample(s)

Sample User-Agent strings

Python/3.9 aiohttp/3.7.3
Python/3.8 aiohttp/3.7.2
Python/3.7 aiohttp/3.6.2a2

Block this crawler

robots.txt — disallow aiohttp:

User-agent: aiohttp Disallow: /

Apache .htaccess — return 403:

RewriteEngine On RewriteCond %{HTTP_USER_AGENT} aiohttp [NC] RewriteRule .* - [F,L]

Nginx — return 403 inside a server block:

if ($http_user_agent ~* "aiohttp") { return 403; }
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