ua-tracer
by Paul Kinlan
trace FqPGfTIH
what does a user agent actually fetch, follow & run?
Trace FqPGfTIH
First seen: 2026-09-04 14:09:45.673 UTC
User-Agent: Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)
Bot verification: Not a known bot (no IP-range check applies).
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 |
|---|---|---|---|---|
| 2026-09-04 14:09:45.673 UTC | +0 ms | homepage | GET | Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/) |
request headers (12){
"accept": "*/*",
"accept-encoding": "deflate, gzip, br, zstd",
"host": "uatracer.com",
"signature": "sig=:CbIJts0BtM367g9ddjUbxfAybQOVjy4TlfPzGXWci/j4FAAFdgqT05C0Nyj6srUNEjtSswRFdbR5/VI38qL6Cw==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1788530985;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1788531045;nonce=\"SubbLwjQcPN9AHoXyG1IrRvXCcIffjtvWxN_HRv9Cbf7l-Azkn85HU8i88RxdXRcqLUVFtVK08KpIdgDQqBBxQ\";tag=\"web-bot-auth\"",
"traceparent": "00-3dcc03d434d1874441f4c2e8e25bec21-02d9e60e4cbf6710-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-3dcc03d434d1874441f4c2e8e25bec21-6b7110c082412a92-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-04 14:10:57.150 UTC | +71477 ms | ES module | GET | Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/) |
request headers (12){
"accept": "*/*",
"accept-encoding": "deflate, gzip, br, zstd",
"host": "uatracer.com",
"signature": "sig=:tHcGoEGM+daZ6ArvGZaLEywDSUZQUZdCYy5+JatXR0eCL4m4V9RDCtajqYdVmbTRzlHKuIfc6bqu+eSCNRvECg==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1788531057;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1788531117;nonce=\"SRHh_SAMoouC95Af7bPd1JAe6saPlrjhLfs-zYxnkNUo51d26Bzy_A56UOEG38ZNgOv2TA39i0P6JoobG0Bdcw\";tag=\"web-bot-auth\"",
"traceparent": "00-ffcc696d86c9a60626277f093472bf3f-df81404b7eafee50-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-ffcc696d86c9a60626277f093472bf3f-6eb9b2574cc283b1-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-04 14:10:57.949 UTC | +72276 ms | Open Graph image | GET | Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/) |
request headers (12){
"accept": "*/*",
"accept-encoding": "deflate, gzip, br, zstd",
"host": "uatracer.com",
"signature": "sig=:s6NS33po2NY275kqmLJw77q1E75quE98N7b9Rqct6iyGl6ZZATwgBXObOaFOf5hzO9tJtDjlVYG6nTLHUqTfBg==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1788531057;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1788531117;nonce=\"FxQcUM9qkJ3x5TUpokxMBdZX98zham6Pr3PXC4TQnwXW2EGJK0rhtZF6ktfnGTQjX02lNRnp-J_P4e2V9qU9ig\";tag=\"web-bot-auth\"",
"traceparent": "00-4bf30a3172f6a6f8b4d785fc2006ba05-c16db95a144fbd65-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-4bf30a3172f6a6f8b4d785fc2006ba05-0c7c59f8fa804463-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-04 14:10:58.891 UTC | +73218 ms | image | GET | Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/) |
request headers (12){
"accept": "*/*",
"accept-encoding": "deflate, gzip, br, zstd",
"host": "uatracer.com",
"signature": "sig=:k4o+jhfdJx8htosn0sjJuRKCTyLcLuFUpliV4Wu/p4u34CjfrqLFqwzRp1PacQqIkOvICkgAcqh3vFHW0wE3BA==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1788531058;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1788531118;nonce=\"dfpXAxB2EQvooVOeYPU_8hAE_nu8vpbr3w5Mai4M9j2JtOzQWWT5dL9wWbISalhcuG4GfVXJhtsINbpk2DGMSQ\";tag=\"web-bot-auth\"",
"traceparent": "00-295e9778ee29c08c76cfdc9672ffcf2a-ff705e378f36ad6f-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-295e9778ee29c08c76cfdc9672ffcf2a-bf04be4f13d575ea-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-04 14:10:59.701 UTC | +74028 ms | JS | GET | Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/) |
request headers (12){
"accept": "*/*",
"accept-encoding": "deflate, gzip, br, zstd",
"host": "uatracer.com",
"signature": "sig=:8auwvVCY1uK3ZAbGk9y/ShKe2EO9g0WHcdRo0ZFeti2tAexXgEQEwqGILlTgrhRO7KupSORAfBK0K+uc4rQkBQ==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1788531059;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1788531119;nonce=\"7cOhL8CGd415xHekBE50HyhR6DvgvVMLhvLETydANE21dSopuLEKFz7-5LFDSBHujlyW4R5b4OkWjilfcT7qgg\";tag=\"web-bot-auth\"",
"traceparent": "00-9f17e9e0a7ee829468e2c5dbce0b5363-9f17375ccac13a2d-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-9f17e9e0a7ee829468e2c5dbce0b5363-97425e70e6262f0f-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-04 14:11:00.487 UTC | +74814 ms | CSS | GET | Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/) |
request headers (12){
"accept": "*/*",
"accept-encoding": "deflate, gzip, br, zstd",
"host": "uatracer.com",
"signature": "sig=:vEl+NblhnmCU09qZ4C5I+KUQwoZez4UjdSFQdyyk2qpw4HT0sobBTx5UvEveeTALfhU0xg5f2h1GG+guFzXzCA==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1788531060;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1788531120;nonce=\"a7gVLvDVvUG10saaN7RU-Lm3iPMw9u1N3iZZf-UjZ-WbhfAeN8bGVtRx15lMwogEg6_cBRnQM39HDwQHpULDxw\";tag=\"web-bot-auth\"",
"traceparent": "00-8e625b25cbc9d5159442b7dde09ac5f9-cecdaa714c614088-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-8e625b25cbc9d5159442b7dde09ac5f9-147c66b6df44a29d-01",
"x-deno-userspace-tracestate": ""
}
|
||||