ua-tracer
by Paul Kinlan
trace eJre11fn
what does a user agent actually fetch, follow & run?
Trace eJre11fn
First seen: 2026-10-26 15:54:46.789 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 |
|---|---|---|---|---|
| 2026-10-26 15:54:46.789 UTC | +0 ms | homepage | GET | Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/) |
request headers (10){
"accept": "*/*",
"accept-encoding": "deflate, gzip, br, zstd",
"host": "uatracer.com",
"signature": "sig=:f61+9rKSRO959kZrsj4JE9qUCUDahfKD3FiSOVSgjMwgHr5VGgrOutjtT1hO4BW8jVNmatFwSAbzXfEeYQSwDQ==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1793030086;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1793030146;nonce=\"bfq04SLiwDsV9PJpCrH_qCE0VqmXir1tZWmNUMTd_T7SZe0cd5nzoD5BUVQGwOJq08qScZrLmiYBc6Un8nu9OQ\";tag=\"web-bot-auth\"",
"traceparent": "00-82dba0a642a13516423c42e68ddb9e30-f143b9b54725cd32-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-10-26 15:55:13.708 UTC | +26919 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=:XFW1V5r7GrZX+pilPo2cc/PQ/d+IgmNA8tVokZHWT7UtmYmGE0ToUV3y5ZatGWRODN7APE+gtPOe9DG3tpohDQ==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1793030113;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1793030173;nonce=\"jB92wDWmlYmy2903VSFYFXSY8CKKuKPx0cAYEO1clHHGzglB03WHshiJmY51H3YfvPMIcumxXsMgbtPODio3UQ\";tag=\"web-bot-auth\"",
"traceparent": "00-3c466bb85cac2ec1106c01476c6dd4c0-7aa4b60d67debd02-01",
"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": "00-3c466bb85cac2ec1106c01476c6dd4c0-15b03b8f87349780-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-10-26 15:55:14.743 UTC | +27954 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=:su8qe08WQEMYXma1JZYHo2OC0lKbOXtXJu2ODAYrWf5Vb1efB+JM9/ZidIbvD226AbaNr+xvFSv2XtlSrlqHAg==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1793030114;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1793030174;nonce=\"Re_lhBXxKCvSnlmybTwUW3iSBBkDmBL-OS6DpUiO158pwpqKyhlz80B9nZLzdEuKwtmkOyrSKpHsHP-qH3sAVQ\";tag=\"web-bot-auth\"",
"traceparent": "00-2e2979108229e86e82aeda2acec19dc1-2e6b6c97d5b75414-01",
"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": "00-2e2979108229e86e82aeda2acec19dc1-880a6f0bc9f4a479-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-10-26 15:55:15.723 UTC | +28934 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=:zwSX4tOo4sdORYClVJeyjJfrpMJgO6qoq5NdHAsWh91EsN/t11GoQzLMc40FFkObBeFEzBcRFALdp3rYCNJkCQ==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1793030115;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1793030175;nonce=\"03yiZrVs2wFdSFR0GHydUKzO34wyCgvuUxhdE7B4M_0t4dt56mYcFwavOqh9HUduoutuXFSpmk9pHycC39HcWQ\";tag=\"web-bot-auth\"",
"traceparent": "00-a7e59ac3b54a181cf39856836e67c9ba-dcc1cd018c5ac7b1-01",
"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-a7e59ac3b54a181cf39856836e67c9ba-bbee49ee2f79c22e-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-10-26 15:55:16.907 UTC | +30118 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=:KiGeFxBWpOcdzunGVgj/Lc6WiVOWrg6/q5W8XkXk8D0rAuU6oXCJgKa7aRiqwykBHnqYMeCAONNhfgIgtR+2DQ==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1793030116;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1793030176;nonce=\"I69cl7PnVVzdiFCMp_8NZgYMUaxv_TyhLmbDf9HS1UVUgH9aX_t6qjpPhiGeqwiW9znJO2wqihllAnJhh2rtxg\";tag=\"web-bot-auth\"",
"traceparent": "00-80c705cf2d5802d726806364592586c9-7308458677a01838-01",
"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": "00-80c705cf2d5802d726806364592586c9-54083ded2aae2258-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-10-26 15:55:17.992 UTC | +31203 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=:Q2+lPO8mflzS34pYIudug/z3hU8YwEX3p3S2fRU3MARrovT3FarYEPMGj01s+YkLG1J9NCgFunXD6sPXsbPTDw==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1793030117;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1793030177;nonce=\"cTyWB3UzUQ138EHHDVr8EevSHOPMMS_Zqab4Csmg74eTHxQ14np-KUMz3gEn0OVs6OzzsM22_sTxrTixeo7J6Q\";tag=\"web-bot-auth\"",
"traceparent": "00-57588b13c9b7f2e9f7275f8720751326-2abb164fd6018900-01",
"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": "00-57588b13c9b7f2e9f7275f8720751326-95b304b0daa5c8b8-01",
"x-deno-userspace-tracestate": ""
}
|
||||