User-Agent

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

first seen 2026-07-02 03:39 · last seen 2026-11-01 01:08 · JSON

Last 7 days (121 observations)

Distinct clients per day (last 30 days, peak 3/day)

Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.

Decomposed attributes

Browser / clientClaudeBot 1.0
Device classbot
Noteinferred from the self-declared string — a claim, not a measurement; compare with the wire fingerprints above

Co-observed signals

Signals from other families seen in the same observation. A fingerprint spread thinly across many lower-layer signatures is a classic inconsistency signal.

TLS ClientHello (JA4)

fingerprintco-occurrences
t13d1011h2_61a7ad8aa9b6_3fcd1a44f3e3 Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28.The fingerprint page shows the full measured match list. More on the catalog.832
t13d1516h2_8daaf6152771_d8a2da3f94cd Match?Exact match in Thumbprint's published controlled catalog captures: chromium 149.0.7827.102, chrome 149.0.7827.102, chrome 149.0.7827.156, +25 more.The fingerprint page shows the full measured match list. More on the catalog.29
t13d131200_f57a46bbacb6_9249cab70c7717
t13d131300_f57a46bbacb6_1bd98dace7757

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn030000_80b089f68b8e_000000000000_000000000000832
ge11nr05enus_f3bb7aa45ec4_000000000000_00000000000016
ge11nn05enus_f3bb7aa45ec4_000000000000_0000000000006
ge20nn050000_857b5fa3405d_000000000000_0000000000006
ge20nr050000_857b5fa3405d_000000000000_0000000000006
ge20nr050000_bb384e635ab6_000000000000_0000000000006
ge20nr050000_277e78b0d503_000000000000_0000000000004
ge20nr050000_7e80a5f53adf_000000000000_0000000000003
ge20nn050000_7e80a5f53adf_000000000000_0000000000002
ge11nn040000_e1d2031bdfea_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;4:2097152;5:16384;6:16384|5177345|0|m,s,a,p Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28, rust-reqwest 0.13.5, rust-reqwest 0.13.4, +4 more.The fingerprint page shows the full measured match list. More on the catalog.832
2:0;4:4194304;5:16384;6:262144;1:65536|1073741824|0|a,m,p,s29

TCP SYN (p0f)

fingerprintco-occurrences
4:118+10:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0510
4:119+9:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0308
4:58+6:0:1420:mss*46,10:mss,sok,ts,nop,ws:df,id+:029
4:58+6:0:1420:mss*30,9:mss,sok,ts,nop,ws:df,id+:024
4:120+8:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:08
4:117+11:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:06

TCP SYN (JA4T)

fingerprintco-occurrences
62727_2-4-8-1-3_1460_7832
65320_2-4-8-1-3_1420_1029
42600_2-4-8-1-3_1420_924

Country

fingerprintco-occurrences
US · United States846
TW · Taiwan21
SG · Singapore7
BE · Belgium7
NL · Netherlands3
JP · Japan1

Network (ASN)

fingerprintco-occurrences
AS16509 · Amazon.com, Inc.832
AS396982 · Google LLC53

TLS supported groups

fingerprintco-occurrences
001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28, rust-reqwest 0.11.27, winhttp 10.0.20348.1, +2 more.The fingerprint page shows the full measured match list. More on the catalog.166
0a0a,11ec,001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 156.0.8078.48, edge 155.0.4283.62, chrome 156.0.8078.47, +11 more.The fingerprint page shows the full measured match list. More on the catalog.20