ua-tracer by Paul Kinlan

ua-tracer

what does a user agent actually fetch, follow & run?

All recent homepage requests, newest first. This page does not mint a new trace (unlike /), so you can browse the log without adding noise.

Recent homepage requests

Filter by user agent and the matching requests appear right below. Showing requests whose user agent contains Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:137.0) Gecko/20100101 Firefox/137.0.

clear
TimestampUser AgentAssets
2026-06-23 10:45:36.422 UTC Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:137.0) Gecko/20100101 Firefox/137.0 0
no JS—
2026-06-23 10:45:01.702 UTC Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:137.0) Gecko/20100101 Firefox/137.0 0
no JS—

By user agent

Running counts across the last 200 homepage requests (98 distinct agents). Click one to set the filter above.

User AgentRequestsJS ran
Go-http-client/1.1 11 0
Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/6… 8 0
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko)… 7 7
okhttp/5.3.0 7 0
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gec… 7 5
TLM-Audit-Scanner/1.0 6 0
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko)… 5 2
TelegramBot (like TwitterBot) 5 0
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KH… 4 0
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, l… 4 0
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, l… 4 0
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KH… 4 0
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KH… 4 2
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, l… 4 0
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, l… 3 0
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, l… 3 0
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, l… 3 0
Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.htm… 3 0
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko); compatible; ChatGP… 3 0
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gec… 3 0
Mozilla/5.0 (iPhone13,2; U; CPU iPhone OS 14_0 like Mac OS X) AppleWeb… 3 3
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:134.0) Gecko/20100101 Firef… 3 0
Mozilla/5.0 (l9scan/2.0.037313e2037313e27363e29363; +https://leakix.ne… 3 0
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, l… 3 0
Mozilla/5.0 (compatible; CT-WP-Scanner/1.0; +https://example.com/bot) 2 0
← prev1–25 of 98next →

Unsolicited / well-known requests

Paths a user agent fetched on its own that ua-tracer never links to: robots.txt, sitemap.xml, /.well-known/*, llms.txt, the root favicon, and similar. Reveals what an agent probes on its own initiative.

Filtered to path /robots.txt to user agent Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:137.0) Gecko/20100101 Firefox/137.0. clear filters

By path

Each unsolicited path with its request count and how many distinct user agents hit it. Click a path to see the individual requests; click a user agent below to reverse-look-up everything that UA did.

PathRequestsDistinct UAs
/robots.txt 1 1
/sitemap.xml 1 1

Requests (1 shown)

The Related trace column links a probe to a homepage trace from the same user agent and IP within 30 minutes (the same crawler that fetched a well-known file usually also loaded /). The offset shows how long before/after the probe that trace was minted.

TimestampPathUser Agent (click for reverse lookup)Related trace
2026-06-23 10:45:11.170 UTC /robots.txt Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:137.0) Gecko/20100101 Firefox/137.0 kGl3P19n (−9.5s)

← back to the live tracer (mints a new trace)