ua-tracer
by Paul Kinlan
trace ttIiFjfb
what does a user agent actually fetch, follow & run?
Trace ttIiFjfb
First seen: 2026-11-07 15:51:53.531 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 |
|---|---|---|---|---|
| 2026-11-07 15:51:53.531 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=:RY3pVeE1WdGLQErHfJ8gPfaZ9a8Z1+PYvu0wuP8xDI/UcORFde5GL5abWTuqEXSuiyseBds/AufAObXwXo1oDw==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1794066711;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1794066771;nonce=\"oBDlqvvBGJNDe9mK0PffKs-KmU19GpKdHgdcfvPm0nByKV_x9UnCrS1SZC9cwuqDce5-LhVD4t76FpNnvDLcQw\";tag=\"web-bot-auth\"",
"traceparent": "00-e02f78f2e61cc24db78e0a046932c4fe-967e82dbcb5ea831-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-11-07 15:53:25.793 UTC | +92262 ms | JS | 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=:8L1nHSmrtxAP0eK195y3rtVHSBAZfqTR7XOahPBRfQGqaB/Lp2hTBVbqBV5fDs6CbT7Q+/fMUSiYjI2Iwfp3Bg==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1794066805;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1794066865;nonce=\"A8QhxJZwj8yaeCfFyVx4gk5nmm33CKdXOTOV03pMGbsgVCZV6bqUSdYa2OE97dxA1nMBbQDVQbXkSDYYPqd6KQ\";tag=\"web-bot-auth\"",
"traceparent": "00-5c854477d78c32fbdecffc1d77f8b5f0-d51b8ffe734396b9-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-11-07 15:53:26.928 UTC | +93397 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=:TNhQ44wCmsWKZkYtlaj7/fYZJKTsgaKrwN7lAxR+x1uEcSrAtVSyxDDg25sndKuQS4Omau1tAcDqaHOV2HhiCw==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1794066806;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1794066866;nonce=\"-T7MWY72W_ozNGZT1KphF27fCFKAeG6lw7GGedNC-UfV5NbLmzG9QzKmG3E6WI8JqexwnM50hraTE9zQPCTxCA\";tag=\"web-bot-auth\"",
"traceparent": "00-a96a6d6abe29cda82881e09809744f52-4a6185b9f5232488-01",
"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-a96a6d6abe29cda82881e09809744f52-0e7c42c7c45f9eab-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-11-07 15:53:27.955 UTC | +94424 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=:V5MMSFX5WyuBcK+AR75tKqlQEkemnBwlRZFYwn0QE16yshdh/ZO/QYBaB9ScZAvafjn+GxuBzrWow2SgPjkVBA==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1794066807;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1794066867;nonce=\"QZeryrgCYsuo5omzUgKYtU1C4hsHe6BR3mWx0jLMc1caq08nOkeFE8wmYgTJzDRDvEt64PMsA9t7QD77rQxUCg\";tag=\"web-bot-auth\"",
"traceparent": "00-9d25c6b48cb831c53feccb1e4364e6aa-d08d419d59588e48-01",
"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": "00-9d25c6b48cb831c53feccb1e4364e6aa-1d1a2c4cc3d5ae5f-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-11-07 15:53:28.954 UTC | +95423 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=:TUoEfczJ7Fp5YFsdiOkoryAe1WCjt5QTNkCAdpx+LUWAdo4U4cGcj27UBkBuxNsZe6jg4FZph2yzk7wvDjzSCA==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1794066808;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1794066868;nonce=\"vsHzBG28f0IhMnR-Sr9u1g0w2uDlEt0o3NnCOTsQdKc9n5VIhJXKnizWugNUxn__z1YtzDxENuVDI07PKOmJxw\";tag=\"web-bot-auth\"",
"traceparent": "00-77ae856b5a080c6ba1dd320e85b755ba-8612936fb5f9a415-01",
"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": "00-77ae856b5a080c6ba1dd320e85b755ba-599840a00ebd245e-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-11-07 15:53:29.894 UTC | +96363 ms | CSS | 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=:4SFjNEdyJC1kA6lbN6hYuSC9oFUqmde30+ilRs2zkEAFzlAcc00FlGcBlYrxM9KWuMua8fcObNdZlKZY/K5sCQ==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1794066809;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1794066869;nonce=\"bQpwnc5Dzaoar7E2kd_mG715iAwRu28HVzMZ2IY8jBSvZVHvxSrrfggw-K0YvLX6-5tnKLHIQ_4vn3GFKmWfdg\";tag=\"web-bot-auth\"",
"traceparent": "00-b418f112020e6b44afc517567ce87873-42348275d75cce75-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
|
||||