User-Agent

OpenAI File Downloader, XaiImageApiFetch/1.0

first seen 2026-09-04 00:18 · last seen 2026-10-28 03:30 · JSON

Last 7 days (4 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

Browser / client	`OpenAI File Downloader, XaiImageApiFetch 1.0`
Note	`inferred 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)

fingerprint	co-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.	6
`t13d1714h1_5b57614c22b0_43ade6aba3df`	1

HTTP request (JA4H)

fingerprint	co-occurrences
`ge11nn12enus_83280f7745f9_000000000000_000000000000`	6
`ge11nn12enus_717bd7bd9ce9_000000000000_000000000000`	1

TCP SYN (p0f)

fingerprint	co-occurrences
`4:43+21:0:1280:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df,ecn:0`	4
`4:54+10:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:50+14:0:1460:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df:0`	1
`4:43+21:0:1280:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df:0`	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`65535_2-1-3-1-1-8-4-0-0_1280_6`	5
`64240_2-4-8-1-3_1460_7`	1
`65535_2-1-3-1-1-8-4-0-0_1460_6`	1

Country

fingerprint	co-occurrences
`HK` · Hong Kong SAR China	5
`US` · United States	1
`SI` · Slovenia	1

Network (ASN)

fingerprint	co-occurrences
`AS137816` · Cloud Net Technologies Limited	5
`AS34779` · T-2, d.o.o.	1
`AS979` · NetLab Global	1

TLS supported groups

fingerprint	co-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.	5