ua-tracer by Paul Kinlan

trace vL129aq6

ua-tracer

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

← all traces

Trace vL129aq6

First seen: 2026-10-01 06:29:03.720 UTC
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)
Bot verification: ✓ verified GPTBot IP in GPTBot published range.

What this user agent did

Directly-referenced assets:

✓ fetched CSS ✓ fetched JS ✓ fetched image ✓ fetched font (HTML)

Document-level link hints:

✓ fetched favicon ✓ fetched apple-touch-icon ✓ fetched web manifest ✓ fetched preload ✓ fetched prefetch

Second-level follows (proves it parsed the linking file):

✓ followed CSS background-image ✓ followed CSS @font-face ✗ followed manifest icon ✓ followed CSS @import

Frames (does it descend into iframes?):

✓ fetched iframe document ✓ descended into iframe (loaded inner image)

Reporting (a report-only CSP is violated by inline styles; reports can arrive via HTTP headers with no JS, or via in-page beacons):

✗ sent a CSP/Reporting report (any path) ✗ delivered via report-uri/Report-To header (no JS) ✗ delivered via in-page beacon (securitypolicyviolation / ReportingObserver)

Social embed (Open Graph / Twitter card images):

✗ fetched og:image ✗ fetched twitter:image

JavaScript execution:

✗ EXECUTED classic JS ✗ EXECUTED ES module ✗ posted client timing

Server-side request waterfall

Every request the server received for this trace, in receive order. +ms is the delta from the homepage request.

ReceivedΔKindMethodUser-Agent
2026-10-01 06:29:03.720 UTC +0 ms homepage GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)
request headers (11) 
{
  "accept": "*/*",
  "accept-encoding": "gzip,deflate,br",
  "from": "gptbot(at)openai.com",
  "host": "uatracer.com",
  "traceparent": "00-958e387e4509b1708b8d396b72375375-815d256cb412a18b-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-958e387e4509b1708b8d396b72375375-08d57c5329351b60-01",
  "x-deno-userspace-tracestate": "",
  "x-openai-host-hash": "383938406"
}
2026-10-01 06:29:17.442 UTC +13722 ms CSS GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)
request headers (13) 
{
  "accept": "*/*",
  "accept-encoding": "gzip,deflate,br",
  "cookie": "[redacted]",
  "from": "gptbot(at)openai.com",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-8f3c6cf56164e4dc6ebf264978093586-1256ceb2c2389f4c-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-8f3c6cf56164e4dc6ebf264978093586-6a3fe31162f64f2f-01",
  "x-deno-userspace-tracestate": "",
  "x-openai-host-hash": "383938406"
}
2026-10-01 06:29:23.172 UTC +19452 ms ES module GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)
request headers (13) 
{
  "accept": "*/*",
  "accept-encoding": "gzip,deflate,br",
  "cookie": "[redacted]",
  "from": "gptbot(at)openai.com",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-2a5c916b0962ec5814782d966c9be2d6-0448dc4ef2e20b53-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-2a5c916b0962ec5814782d966c9be2d6-325f76a919dff7e2-01",
  "x-deno-userspace-tracestate": "",
  "x-openai-host-hash": "383938406"
}
2026-10-01 06:29:25.576 UTC +21856 ms preload (image) GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)
request headers (13) 
{
  "accept": "*/*",
  "accept-encoding": "gzip,deflate,br",
  "cookie": "[redacted]",
  "from": "gptbot(at)openai.com",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-17dc7575e2300122f61be5212844f48a-45f121b1d648d71a-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-17dc7575e2300122f61be5212844f48a-017541c6c5cf9e58-01",
  "x-deno-userspace-tracestate": "",
  "x-openai-host-hash": "383938406"
}
2026-10-01 06:29:26.072 UTC +22352 ms iframe document GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)
request headers (13) 
{
  "accept": "*/*",
  "accept-encoding": "gzip,deflate,br",
  "cookie": "[redacted]",
  "from": "gptbot(at)openai.com",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-4e751b1907b9aba5b7ecd977b0e3653f-0ce2bf3088c51885-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-4e751b1907b9aba5b7ecd977b0e3653f-963c638164a9ba09-01",
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}
2026-10-01 06:29:26.547 UTC +22827 ms image inside iframe GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)
request headers (13) 
{
  "accept": "*/*",
  "accept-encoding": "gzip,deflate,br",
  "cookie": "[redacted]",
  "from": "gptbot(at)openai.com",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/r/vL129aq6/eSEspVRc/iframe",
  "traceparent": "00-bccd0cfe565847c50d58fd3f274f420f-7d451c78270a79d8-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)",
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2026-10-01 06:29:27.564 UTC +23844 ms image inside iframe GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)
request headers (13) 
{
  "accept": "*/*",
  "accept-encoding": "gzip,deflate,br",
  "cookie": "[redacted]",
  "from": "gptbot(at)openai.com",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/r/vL129aq6/eSEspVRc/iframe",
  "traceparent": "00-0ace88061fd386c04da2dfc89ad88e23-6a5ad079b1d3f061-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)",
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2026-10-01 06:29:28.054 UTC +24334 ms prefetch GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)
request headers (13) 
{
  "accept": "*/*",
  "accept-encoding": "gzip,deflate,br",
  "cookie": "[redacted]",
  "from": "gptbot(at)openai.com",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-b08987e0864ae1fddcd1661a793bfbf7-b985246a51448b66-01",
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2026-10-01 06:29:29.058 UTC +25338 ms font (HTML) GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)
request headers (13) 
{
  "accept": "*/*",
  "accept-encoding": "gzip,deflate,br",
  "cookie": "[redacted]",
  "from": "gptbot(at)openai.com",
  "host": "uatracer.com",
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2026-10-01 06:29:30.356 UTC +26636 ms apple-touch-icon GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)
request headers (13) 
{
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  "cookie": "[redacted]",
  "from": "gptbot(at)openai.com",
  "host": "uatracer.com",
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2026-10-01 06:29:34.891 UTC +31171 ms favicon GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)
request headers (13) 
{
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  "from": "gptbot(at)openai.com",
  "host": "uatracer.com",
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2026-10-01 06:29:35.634 UTC +31914 ms web app manifest GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)
request headers (13) 
{
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  "host": "uatracer.com",
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2026-10-01 06:29:52.469 UTC +48749 ms JS GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)
request headers (13) 
{
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2026-10-01 06:31:42.767 UTC +159047 ms CSS @font-face GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)
request headers (13) 
{
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2026-10-01 06:31:52.447 UTC +168727 ms image GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)
request headers (13) 
{
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2026-10-01 06:31:55.939 UTC +172219 ms CSS @import (nested stylesheet) GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)
request headers (13) 
{
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2026-10-01 06:31:58.443 UTC +174723 ms CSS background-image GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot)
request headers (13) 
{
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2026-10-03 13:20:56.519 UTC +197512799 ms iframe document GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36
request headers (9) 
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2026-10-03 13:20:59.823 UTC +197516103 ms image inside iframe GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36
request headers (9) 
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2026-10-14 04:42:02.780 UTC +1116779060 ms iframe document GET Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1
request headers (12) 
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  "traceparent": "00-fc22addd7c58e738531c080698aefeb0-f77457f2d0b51cb1-01",
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  "upgrade-insecure-requests": "1",
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  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}