TCP SYN (p0f)

4:43+21:0:1424:mss*29,7:mss,sok,nop,nop,nop,nop,nop,nop,nop,nop,nop,nop,nop,ws:df,id+:0

first seen 2026-08-13 04:37 · last seen 2026-10-21 15:40 · JSON

Distinct clients per day (last 30 days, peak 6/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 TTL43+21
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_e5627efa2ab127

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr100000_3a9ba06c504b_000000000000_00000000000018
ge20nn110000_f553327a6567_000000000000_0000000000005
ge20nn110000_5a0617034b33_000000000000_0000000000004

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|1:1:0:220|m,a,s,p16
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p9
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|3:1:0:220|m,a,s,p1
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|5:1:0:220|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_727

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Linux; Android 11; Redmi Note 8 Pro Build/RP1A.200720.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.72 MQQBrowser/6.2 TBS/045913 Mobile Safari/537.36 V1_AND_SQ_8.8.68_2538_YYB_D A_8086800 QQ/8.8.68.7265 NetType/WIFI WebP/0.3.0 Pixel/1080 StatusBarHeight/76 SimpleUISwitch/1 QQTheme/2971 InMagicWin/0 StudyMode/0 CurrentMode/1 CurrentFontScale/1.0 GlobalDensityScale/0.9818182 AppId/537112567 Edg/98.0.4758.10218
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 T7/6.35
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/7.0.14

Country

fingerprintco-occurrences
CN · China27

Network (ASN)

fingerprintco-occurrences
AS134763 · CHINANET Guangdong province network14
AS45090 · Shenzhen Tencent Computer Systems Company Limited13

TLS supported groups

fingerprintco-occurrences
0a0a,001d,0017,00187