TCP SYN (p0f)

4:53+11:0:1460:mss*20,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-08-17 13:36 · last seen 2026-09-09 22:53 · JSON

Last 7 days (2 observations)

Distinct clients per day (last 30 days, peak 2/day)

Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.

Decomposed attributes

IP version4
Initial TTL53+11
Options length0
MSS1460
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
t12d130600_2d7513195f68_e51b7354d87f11

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr040000_e1d2031bdfea_000000000000_00000000000011

TCP SYN (JA4T)

fingerprintco-occurrences
29200_2-4-8-1-3_1460_711

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Linux; Android 11; M2004J15SC) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.114 Mobile Safari/537.3611

Country

fingerprintco-occurrences
US · United States11

Network (ASN)

fingerprintco-occurrences
AS45102 · Alibaba (US) Technology Co., Ltd.11