TCP SYN (p0f)

6:243+12:0:1440:65535,12:mss,nop,ws,sok,ts:ecn,flow:0

first seen 2026-09-18 01:41 · last seen 2026-09-18 01:41 · JSON

Decomposed attributes

IP version6
Initial TTL243+12
Options length0
MSS1440
Window size65535
Window scale12
Options layoutmss,nop,ws,sok,ts
Quirksecn,flow
Payload class0

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
t13d171100_ab0a1bf427ad_8e6e362c5eac1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn050000_b223a0ebb0b5_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: python-requests 2.34.2, python-requests 2.33.1, python-requests 2.32.3.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-4-8_1440_121

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0 Safari/537.361

Country

fingerprintco-occurrences
US · United States1

Network (ASN)

fingerprintco-occurrences
AS7018 · AT&T Enterprises, LLC1