TCP SYN (p0f)

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

first seen 2026-06-11 05:11 · last seen 2026-09-15 19:00 · JSON

Last 7 days (13 observations)

Distinct clients per day (last 30 days, peak 4/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 TTL44+20
Options length0
MSS1424
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
t13d131100_f57a46bbacb6_e5728521abd4106
t13d131000_f57a46bbacb6_e7c285222651 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.23.12.The fingerprint page shows the full measured match list. More on the catalog.78
t13d190900_9dc949149365_97f8aa674fd930

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn10zhcn_9c0cf7475f83_000000000000_000000000000121
ge11nr10zhcn_9c0cf7475f83_000000000000_00000000000048
ge11nn08zhcn_bd35aedc6348_000000000000_00000000000021
ge11nr08zhcn_bd35aedc6348_000000000000_00000000000018
ge11nr10zhcn_986c3fb09fa9_000000000000_0000000000003
ge11nn10zhcn_986c3fb09fa9_000000000000_0000000000002
ge11nn030000_0db47b7d240d_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
29200_2-4-8-1-3_1424_7169

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1213
Mozilla/5.0 (Linux; Android 10; LIO-AN00 Build/HUAWEILIO-AN00; wv) MicroMessenger Weixin QQ AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/78.0.3904.62 XWEB/2692 MMWEBSDK/200901 Mobile Safari/537.361

Country

fingerprintco-occurrences
BR · Brazil133
US · United States42
SG · Singapore12
CN · China12
JP · Japan8
HK · Hong Kong SAR China7

Network (ASN)

fingerprintco-occurrences
AS132203 · Tencent Building, Kejizhongyi Avenue202
AS45090 · Shenzhen Tencent Computer Systems Company Limited12