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 2026-10-30 15:15 · 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_a1e9356827954
t12d4906h1_730fb1b0ac6a_22a92d800fe43

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn07zhcn_ad6bb88d6320_000000000000_0000000000007

TCP SYN (JA4T)

fingerprintco-occurrences
29200_2-4-8-1-3_1460_77

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11) AppleWebKit/601.1.27 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/601.1.272
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
Mozilla/5.0 (iPhone; CPU iPhone OS 11_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15G77 MicroMessenger/6.6.5 NetType/4G Language/zh_CN1
Opera/8.53 (Windows NT 5.2; U; en)1

Country

fingerprintco-occurrences
CN · China7

Network (ASN)

fingerprintco-occurrences
AS58461 · CT HangZhou IDC7

TLS supported groups

fingerprintco-occurrences
0017,0019,0018,00164