User-Agent

curl/8.16.0

first seen 2026-07-01 22:54 · last seen 2026-09-01 19:06 · JSON

Distinct clients per day (last 30 days, peak 1/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 / clientcurl 8.16.0
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
t13d2013h1_2b729b4bf6f3_e24568c0d4402

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn030000_fe444ad14866_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.16.0.The fingerprint page shows the full measured match list. More on the catalog.1
he11nn030000_fe444ad14866_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
6:53+11:0:1440:65535,8:mss,nop,ws,nop,nop,sok:flow:01
6:52+12:0:1440:65535,8:mss,nop,ws,nop,nop,sok:flow:01

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-4_1440_82

Country

fingerprintco-occurrences
BR · Brazil2

Network (ASN)

fingerprintco-occurrences
AS28573 · Claro NXT Telecomunicacoes Ltda2