User-Agent

Claude-User (claude-code/2.1.252; +https://support.anthropic.com/)

first seen 2026-09-01 19:02 · last seen 2026-09-04 04:09 · JSON

Decomposed attributes

Browser / clientclaude-code 2.1.252
Device classbot
Declared URLhttps://support.anthropic.com/
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
t13d181000_5d04281c6031_78e6aca7449b3

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn050000_2469c960a647_000000000000_0000000000003

TCP SYN (p0f)

fingerprintco-occurrences
6:53+11:0:1440:65535,8:mss,nop,ws,nop,nop,sok:flow:02
4:54+10:0:1452:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:id-,ecn:01

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-4_1440_82
65535_2-1-3-1-1-8-4-0-0_1452_61

Country

fingerprintco-occurrences
BR · Brazil2
RU · Russia1

Network (ASN)

fingerprintco-occurrences
AS28573 · Claro NXT Telecomunicacoes Ltda2
AS12389 · PJSC Rostelecom1