TCP SYN (p0f)

4:44+20:0:1424:mss*29,7:mss,sok,nop,nop,nop,nop,nop,nop,nop,nop,nop,nop,nop,ws:df,id+:0

first seen 2026-08-07 18:53 · last seen 2026-08-07 18:53 · JSON

Decomposed attributes

IP version4
Initial TTL44+20
Options length0
MSS1424
Window sizemss*29
Window scale7
Options layoutmss,sok,nop,nop,nop,nop,nop,nop,nop,nop,nop,nop,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
t13d1516h2_8daaf6152771_e5627efa2ab13

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr100000_3a9ba06c504b_000000000000_0000000000003

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|1:1:0:220|m,a,s,p2
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|3:1:0:220|m,a,s,p1

TCP SYN (JA4T)

fingerprintco-occurrences
42340_2-4-1-1-1-1-1-1-1-1-1-1-1-3_1424_73

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Mobile Safari/537.36 MicroMessenger/7.0.13

Country

fingerprintco-occurrences
CN · China3

Network (ASN)

fingerprintco-occurrences
AS56040 · China Mobile communications corporation3