TCP SYN (JA4T)

1460_2-4-8-1-3_1460_9

first seen 2026-08-01 08:58 · last seen 2026-09-01 22:50 · JSON

Distinct clients per day (last 30 days, peak 2/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

TCP window1460
Option kinds2-4-8-1-3
MSS1460
Window scale9

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
t13d1911h2_9dc949149365_e7c285222651 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.21.13.The fingerprint page shows the full measured match list. More on the catalog.4
t12d280700_b75078996b15_6b16546de8021

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn04zhcn_4bdba6e1e609_000000000000_0000000000002
ge20nn04zhcn_ed9f6fd839a8_000000000000_0000000000001
ge11nn030000_32287c24fa5b_000000000000_0000000000001
ge20nn04zhcn_000ee8a720b8_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;4:4194304;6:10485760|1073741824|0|a,m,p,s Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.21.13, go-net/http 1.23.12.The fingerprint page shows the full measured match list. More on the catalog.4

TCP SYN (p0f)

fingerprintco-occurrences
4:49+15:0:1460:mss*1,9:mss,sok,ts,nop,ws:df,id+:02
4:48+16:0:1460:mss*1,9:mss,sok,ts,nop,ws:df,id+:02
4:40+24:0:1460:mss*1,9:mss,sok,ts,nop,ws:df,id+:01

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.112 Safari/537.364
curl/7.29.01

Country

fingerprintco-occurrences
HK · Hong Kong SAR China4
CN · China1

Network (ASN)

fingerprintco-occurrences
AS9465 · AGOTOZ PTE. LTD.4
AS9808 · China Mobile Communications Group Co., Ltd.1