Claude-User

The wire fingerprints traffic claiming to be this fetcher 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
663350.0%

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
t13d1713h1_ab0a1bf427ad_ecd0401ec68b Match?Exact match in Thumbprint's published controlled catalog captures: python-httpx 0.28.1.The fingerprint page shows the full measured match list. More on the catalog. 3

HTTP request (JA4H)

fingerprintobservations
ge11nn050000_be0d0b335e46_000000000000_000000000000 3

TCP SYN (JA4T)

fingerprintobservations
65320_2-4-8-1-3_1420_7 3

TCP SYN (p0f)

fingerprintobservations
4:58+6:0:1420:mss*46,7:mss,sok,ts,nop,ws:df,id+:0 3

Fingerprints presented by unverified claims

Unverified claims: the highest-volume fingerprints wearing this operator's User-Agent that no operator-published channel confirms, per signal. A Match pill here shows known clients measured producing the same fingerprint.

TLS ClientHello (JA4)

fingerprintobservations
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. 2
t13d091100_f91f431d341e_f50d94e863eb 1

HTTP request (JA4H)

fingerprintobservations
ge11nn050000_3658ef221638_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: wget 1.21.4, wget 1.25.0, wget 1.21.3.The fingerprint page shows the full measured match list. More on the catalog. 1
ge20nn050000_857b5fa3405d_000000000000_000000000000 1
ge20nn050000_bb384e635ab6_000000000000_000000000000 1

HTTP/2 frames (Akamai)

fingerprintobservations
2:0;4:4194304;5:16384;6:262144;1:65536|1073741824|0|a,m,p,s 2

TCP SYN (JA4T)

fingerprintobservations
65320_2-4-8-1-3_1420_10 2
65320_2-4-8-1-3_1420_9 1

TCP SYN (p0f)

fingerprintobservations
4:58+6:0:1420:mss*46,10:mss,sok,ts,nop,ws:df,id+:0 2
4:58+6:0:1420:mss*46,9:mss,sok,ts,nop,ws:df,id+,ecn:0 1