TCP SYN (p0f)

4:40+24:0:1424:mss*20,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-06-11 03:41 · last seen 2026-08-07 05:10 · JSON

Decomposed attributes

IP version4
Initial TTL40+24
Options length0
MSS1424
Window sizemss*20
Window scale7
Options layoutmss,sok,ts,nop,ws
Quirksdf,id+
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
t13d131000_f57a46bbacb6_e7c285222651 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.23.12.The fingerprint page shows the full measured match list. More on the catalog.39
t13d131100_f57a46bbacb6_e5728521abd48

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn08zhcn_bd35aedc6348_000000000000_00000000000030
ge11nr08zhcn_bd35aedc6348_000000000000_00000000000016
ge11nr10zhcn_9c0cf7475f83_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
29200_2-4-8-1-3_1424_71

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.147

Country

fingerprintco-occurrences
KR · South Korea32
HK · Hong Kong SAR China7
SG · Singapore4
ID · Indonesia3
US · United States1

Network (ASN)

fingerprintco-occurrences
AS132203 · Tencent Building, Kejizhongyi Avenue47