TCP SYN (p0f)

4:35+29:0:1460:mss*20,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-08-26 13:55 · last seen 2026-09-10 12:14 · JSON

Last 7 days (2 observations)

Distinct clients per day (last 30 days, peak 1/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 TTL35+29
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
t12d490600_730fb1b0ac6a_a1e9356827953

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn07zhcn_ad6bb88d6320_000000000000_0000000000003

TCP SYN (JA4T)

fingerprintco-occurrences
29200_2-4-8-1-3_1460_73

User-Agent

fingerprintco-occurrences
Dalvik/2.1.0 (Linux; U; Android 9.0; ZTE BA520 Build/MRA58K)1
Mozilla/5.0 (X11; U; Linux i686; en-GB; rv:1.9.0.6) Gecko/2009020911 Ubuntu/8.10 (intrepid) Firefox/3.0.61
Mozilla/5.0 (Linux; Android 8.1; MI 8 SE Build/OPM1.171019.019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/57.0.2987.132 MQQBrowser/6.2 TBS/044113 Mobile Safari/537.36 V1_AND_SQ_7.7.0_882_YYB_D QQ/7.7.0.3640 NetType/WIFI WebP/0.3.0 Pixel/10801

Country

fingerprintco-occurrences
CN · China3

Network (ASN)

fingerprintco-occurrences
AS58461 · CT HangZhou IDC3