TCP SYN (p0f)

4:51+13:0:8910:mss*4,9:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-18 05:20 · last seen 2026-08-01 22:38 · JSON

Decomposed attributes

IP version4
Initial TTL51+13
Options length0
MSS8910
Window sizemss*4
Window scale9
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
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.3

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn11enus_f52f937d55db_000000000000_0000000000003

TCP SYN (JA4T)

fingerprintco-occurrences
35640_2-4-8-1-3_8910_93

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (iPhone; CPU iPhone OS 17_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Mobile/15E148 Safari/604.13

Country

fingerprintco-occurrences
US · United States3

Network (ASN)

fingerprintco-occurrences
AS31898 · Oracle Corporation3