TCP SYN (JA4T)

64240_2-4-8-1-3_1300_10

first seen 2026-07-01 17:10 · last seen 2026-09-25 23:43 · JSON

Decomposed attributes

TCP window64240
Option kinds2-4-8-1-3
MSS1300
Window scale10

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
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.2
t13d4312h1_c7886603b240_b26ce05bbdd61

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
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
he11nn050000_3658ef221638_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:39+25:0:1300:mss*44,10:mss,sok,ts,nop,ws:df,id+:02
4:40+24:0:1300:mss*44,10:mss,sok,ts,nop,ws:df,id+:01

User-Agent

fingerprintco-occurrences
markethunt2/0.1 (+research)2
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.361

Country

fingerprintco-occurrences
DE · Germany2
LV · Latvia1

Network (ASN)

fingerprintco-occurrences
AS207957 · SERV.HOST GROUP LTD2
AS24921 · Latvijas Mobilais Telefons SIA1