ua-tracer by Paul Kinlan

trace ZzK17hLf

ua-tracer

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

← all traces

Trace ZzK17hLf

First seen: 2026-10-11 15:39:56.945 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.

ReceivedΔKindMethodUser-Agent
2026-10-11 15:39:56.945 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=:SVENoSkTTIhfQNHsKrUBF+L1/I6rH6qB4Z6+to+dOyGvWFJr+u4RQ3TgXSpw3l5LfwTFTqPmTETTHEeO6hQfDA==:",
  "signature-agent": "\"https://ahrefs.com\"",
  "signature-input": "sig=(\"@authority\" \"signature-agent\");created=1791733196;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1791733256;nonce=\"ZVcAcgUL-Kaxf5_W7oGgG7dblUorKA4PgmDxvYRbmmp2eu6Pr8Lrwk2a6WIhsx7CrNNFeDyGqAcRGba1yCmYSw\";tag=\"web-bot-auth\"",
  "traceparent": "00-52dc868d57ee9fa2466843925ca8332d-67c090353cbac341-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-10-11 15:44:32.183 UTC +275238 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=:DtcwyqV8i/Th4muq6svjB7vwAOXOuog3R89gq17RVgtEJyb+gZ2u6S9feiXjz/tQK8AcVXUHvx/ALONZ4GbGCw==:",
  "signature-agent": "\"https://ahrefs.com\"",
  "signature-input": "sig=(\"@authority\" \"signature-agent\");created=1791733472;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1791733532;nonce=\"CCHokDCD9Z90ygqa6z8ecbLekJys_VEHT6Z8Zgfjqz3VV7QOiE-tl2gC-T3BtRAHuCNUhqX-ZsdCoIKZVu6ZJA\";tag=\"web-bot-auth\"",
  "traceparent": "00-c630d3d13c86f083ca21287aac49f99e-aab90be785bb4d7e-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-c630d3d13c86f083ca21287aac49f99e-5d7cd1ef9315b8ba-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-11 15:44:33.055 UTC +276110 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=:iCS6w5iaT6s8wkFOsXF4sPuFo812Q6CvgbbV68rr6249j1LjgjC81VuRDa6xUs7yRCEKPYwv3rqof9qbFgEPCw==:",
  "signature-agent": "\"https://ahrefs.com\"",
  "signature-input": "sig=(\"@authority\" \"signature-agent\");created=1791733473;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1791733533;nonce=\"WzVhkjI6l69iTP764VyK8n07Hlc6U0KzZSU9LLV--OYCuODqUXxcmeKhxlPopD0FUvhFk3bPFWKDGDFni70WoQ\";tag=\"web-bot-auth\"",
  "traceparent": "00-d51318e1cbc21aac0ef497d015ba6b3c-da7744d66d459599-01",
  "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-d51318e1cbc21aac0ef497d015ba6b3c-4ea64b5cdb775971-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-11 15:44:34.053 UTC +277108 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=:YVM8kn4Mt+l1Q6zX0ryv3+78kdtleCCyP+HvBg3TN52ZTtNFHdwCC0LwIE3EgMhV3FuDN6xXBWdGhgopDBoWCQ==:",
  "signature-agent": "\"https://ahrefs.com\"",
  "signature-input": "sig=(\"@authority\" \"signature-agent\");created=1791733473;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1791733533;nonce=\"nF3-UwUeZqnoOtk3O55oI-hn4iZUo7TCWGdj9NhoUHxMDpJ0B-98C7knuPMb8YMaKJZ4KKinQxvRVqbaqsPpjA\";tag=\"web-bot-auth\"",
  "traceparent": "00-d2f9e9ce02a0b99ac60ba335ed85228e-6878c2e0caff7398-01",
  "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-d2f9e9ce02a0b99ac60ba335ed85228e-9fb800fe6679df4c-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-11 15:44:35.071 UTC +278126 ms ES module 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=:pVjHsFKXJ8cqtQ1xbuszekbsI1O3kHbvoK39sxoSMV8xq0/NPGhZuo3t5wvwG5a9P1KzYLomigrWyOEHgIdABQ==:",
  "signature-agent": "\"https://ahrefs.com\"",
  "signature-input": "sig=(\"@authority\" \"signature-agent\");created=1791733475;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1791733535;nonce=\"_M4ou5rPJ8rRiqbo2ywhdorL5RB0U7V6GBfB1wy7qmg9uPgJShS6KsI_jTngM1vx4pQchifYDE3_y-eK3d2oqA\";tag=\"web-bot-auth\"",
  "traceparent": "00-c7e85c8fcfab9caa216a7dabfe07ae99-d19a154c26839a9b-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-10-11 15:44:35.926 UTC +278981 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=:MTd1OBJE9jg+9voM2T2GtYYzjl6LrXqlOtFacViiBSXwcdLjNLxLEavkIO64lQIH0eBCAOdcs+gLfDN4YRoPBg==:",
  "signature-agent": "\"https://ahrefs.com\"",
  "signature-input": "sig=(\"@authority\" \"signature-agent\");created=1791733475;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1791733535;nonce=\"eNtNWCQk604ypB41hHRdgQt58gETWy4lrxmn-SoynLHSbtn0IRiEiMs6zYpMGFldy8BBF5HmNUswzdxmDXnC0g\";tag=\"web-bot-auth\"",
  "traceparent": "00-b9ddf2b41739d9e8ce1a8c351e7e7515-05f237453ab57e52-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}