Reflectionbot

The wire fingerprints traffic claiming to be this crawler presented, split by whether a channel the operator publishes for verification — its IP ranges or forward-confirmed reverse DNS — confirmed the claim.

Claims in window

Same adjudication as the stats page: a claim confirmed by either channel the operator publishes — its IP ranges or forward-confirmed reverse DNS — is verified; one confirmed by neither is unverified. Operators differ in which channels they offer, and either alone fully identifies. Sources count distinct clients, not traffic. Fingerprint windows below are day-granular, like sources.

observationssourcesverifiedunverifiedunverified rate
1777910610600.0%

Fingerprints presented by confirmed traffic

The highest-volume fingerprints the operator's own traffic runs, per signal — claims confirmed via operator-published channels. A Match pill marks an exact match against a controlled capture — an association with known stacks, not an identity verdict: unrelated clients built on the same stack can legitimately share a fingerprint.

TLS ClientHello (JA4)

fingerprintobservations
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. 17779

HTTP request (JA4H)

fingerprintobservations
ge20nn09enus_a1a0096bef8e_000000000000_000000000000 17589
ge20nn09enus_11021b20a09b_000000000000_000000000000 190

HTTP/2 frames (Akamai)

fingerprintobservations
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. 17779

TCP SYN (JA4T)

fingerprintobservations
35424_2-4-8-1-3_1460_7 17779

TCP SYN (p0f)

fingerprintobservations
4:57+7:0:1460:35424,7:mss,sok,ts,nop,ws:df,id+:0 17721
4:53+11:0:1460:35424,7:mss,sok,ts,nop,ws:df,id+:0 20
4:56+8:0:1460:35424,7:mss,sok,ts,nop,ws:df,id+:0 18
4:54+10:0:1460:35424,7:mss,sok,ts,nop,ws:df,id+:0 12
4:55+9:0:1460:35424,7:mss,sok,ts,nop,ws:df,id+:0 8