User-Agent

deepseek-harness/0.0.1 (+https://github.com/deepseek-ai)

first seen 2026-09-13 10:13 · last seen 2026-10-15 17:23 · JSON

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

Browser / clientdeepseek-harness 0.0.1
Device classbot
Declared URLhttps://github.com/deepseek-ai
Noteinferred from the self-declared string — a claim, not a measurement; compare with the wire fingerprints above

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
t13d5212h1_b262b3658495_8e6e362c5eac Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 24.21.0, node-fetch 24.19.0, node-fetch 22.23.1, +8 more.The fingerprint page shows the full measured match list. More on the catalog.5

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn05*000_754588453448_000000000000_0000000000005

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;4:262144|458753|0|a,m,p,s Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 26.4.0.The fingerprint page shows the full measured match list. More on the catalog.5

TCP SYN (p0f)

fingerprintco-occurrences
4:110+18:0:1360:65535,8:mss,nop,ws,nop,nop,sok:df,id+:02
4:54+10:0:1460:mss*44,9:mss,sok,ts,nop,ws:df,id+:01
4:52+12:0:1452:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df:01
6:237+18:0:1300:65535,8:mss,nop,ws,nop,nop,sok:flow:01

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-4_1360_82
65535_2-1-3-1-1-8-4-0-0_1452_61
64240_2-4-8-1-3_1460_91
65535_2-1-3-1-1-4_1300_81

Country

fingerprintco-occurrences
CN · China3
SE · Sweden1
TW · Taiwan1

Network (ASN)

fingerprintco-occurrences
AS9808 · China Mobile Communications Group Co., Ltd.2
AS3462 · Data Communication Business Group1
AS56040 · China Mobile communications corporation1
AS214640 · Hostup AB1

TLS supported groups

fingerprintco-occurrences
11ec,001d,0017,001e,0018,0019,0100,0101 Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 24.22.1, python-httpx 0.28.1, python-requests 2.34.2, +2 more.The fingerprint page shows the full measured match list. More on the catalog.1