ua-tracer
by Paul Kinlan
trace JJld4Isa
what does a user agent actually fetch, follow & run?
Trace JJld4Isa
First seen: 2026-07-13 02:56:36.528 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 checked against published bot CIDR ranges; 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.
| Received | Δ | Kind | Method | User-Agent |
|---|---|---|---|---|
| 2026-07-13 02:56:36.528 UTC | +0 ms | homepage | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot) |
request headers (12){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://maxxdtrailer.com",
"traceparent": "00-7c831f647a988ea50a1a2e086e6a574f-69f1df25310db751-01",
"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": "00-7c831f647a988ea50a1a2e086e6a574f-6dc694554b7930f9-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-13 02:56:44.845 UTC | +8317 ms | JS | 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, br, deflate",
"cookie": "ua-tracer-trace=JJld4Isa",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-f5adb62171fdeb78684447e2737cee0b-5b52241ed45c5a68-01",
"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-f5adb62171fdeb78684447e2737cee0b-58188cf9890b7f35-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-13 02:57:55.547 UTC | +79019 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){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"cookie": "ua-tracer-trace=JJld4Isa",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-077d69a7d7009259f20bfa84ea7ad80e-e2a52ee9edaac026-01",
"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": "00-077d69a7d7009259f20bfa84ea7ad80e-ea65d80696bc1965-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-13 02:57:56.079 UTC | +79551 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, br, deflate",
"cookie": "ua-tracer-trace=JJld4Isa",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-3b90a33f661a349dfcc25c73ec2fd9a8-4fb633b177b94b9a-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": "00-3b90a33f661a349dfcc25c73ec2fd9a8-d3a6d24e51da778e-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-13 02:57:56.622 UTC | +80094 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, br, deflate",
"cookie": "ua-tracer-trace=JJld4Isa",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-ba23eac2eb3a69f1bf78a641f3bbc7ce-a579ac3be55226ab-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-ba23eac2eb3a69f1bf78a641f3bbc7ce-ba1690d0d49ccd8b-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-13 02:57:57.091 UTC | +80563 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, br, deflate",
"cookie": "ua-tracer-trace=JJld4Isa",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-de11de0e0621ce26a5c944480771080d-837f288bc4b955b4-01",
"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-de11de0e0621ce26a5c944480771080d-e68b7aae6d62fbdc-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-13 02:57:57.903 UTC | +81375 ms | favicon | 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, br, deflate",
"cookie": "ua-tracer-trace=JJld4Isa",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-967622cd04da8922bb38c3f1fb9b5572-dfa209f3840e380a-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": "00-967622cd04da8922bb38c3f1fb9b5572-13a132281ec6bef2-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-13 02:57:58.419 UTC | +81891 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, br, deflate",
"cookie": "ua-tracer-trace=JJld4Isa",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-ec0fdf82c4c4c74e66f205d5a8629954-e1d8b80bbd6b5497-01",
"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-ec0fdf82c4c4c74e66f205d5a8629954-c0f7bfce8ba5e924-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-13 02:57:58.943 UTC | +82415 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){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"cookie": "ua-tracer-trace=JJld4Isa",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-c0da8dfe8a614294f5511dde60bfee63-fc1f8b7b98d6a99d-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-c0da8dfe8a614294f5511dde60bfee63-18486a685ef29241-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-13 02:58:05.067 UTC | +88539 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, br, deflate",
"cookie": "ua-tracer-trace=JJld4Isa",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-3ac380ae34e1614eee3a2466d1b3ff81-1e5b3fd57b1796df-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": "00-3ac380ae34e1614eee3a2466d1b3ff81-b4ae1e94dae79879-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-13 02:58:16.088 UTC | +99560 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, br, deflate",
"cookie": "ua-tracer-trace=JJld4Isa",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/r/JJld4Isa/PI7VmAWx/iframe",
"traceparent": "00-13dbe5366fcaf0d98b45802bd12904f2-a8f6da90b607c49b-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": "00-13dbe5366fcaf0d98b45802bd12904f2-f5f89b09b1729a30-01",
"x-deno-userspace-tracestate": "",
"x-openai-host-hash": "383938406"
}
|
||||
| 2026-07-13 03:02:52.003 UTC | +375475 ms | image | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot) |
request headers (10){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-01b39e1d0cddfa430e582c10bec0f3b3-2ccfc09ed671888a-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-openai-host-hash": "383938406"
}
|
||||
| 2026-07-13 03:02:52.541 UTC | +376013 ms | CSS | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot) |
request headers (10){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-313cc2d99ff07d07c2e46ac37cb3ac8c-fde173ef33558e24-01",
"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-openai-host-hash": "383938406"
}
|
||||
| 2026-07-13 03:02:56.814 UTC | +380286 ms | CSS background-image | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot) |
request headers (10){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/r/JJld4Isa/PI7VmAWx/style.css",
"traceparent": "00-a922904aebf31ac59749d7b7203a9f32-b6df21c718d2faef-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-openai-host-hash": "383938406"
}
|
||||
| 2026-07-13 03:02:57.381 UTC | +380853 ms | CSS @font-face | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.4; +https://openai.com/gptbot) |
request headers (10){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/r/JJld4Isa/PI7VmAWx/style.css",
"traceparent": "00-ca937f6aa9f5fe9670e7762ce3d6db8e-a3719feedeba9195-01",
"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-openai-host-hash": "383938406"
}
|
||||
| 2026-07-13 03:02:57.909 UTC | +381381 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 (10){
"accept": "*/*",
"accept-encoding": "gzip, br, deflate",
"from": "gptbot(at)openai.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/r/JJld4Isa/PI7VmAWx/style.css",
"traceparent": "00-3986e3f98ca03b68a5549ffb00a6711c-d97c6ae7e4c581a6-01",
"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-openai-host-hash": "383938406"
}
|
||||