TLS ClientHello (JA4)

t13d3113h2_1d947a95fc68_7e1102d2036b

first seen 2026-06-11 10:32 · last seen 2026-10-31 23:56 · JSON

Matches controlled captures

Known clients driven through this site's own edge produced this exact fingerprint — measured truth, not inference. catalog →

java-httpclient 17.0.19 · Ubuntu 26.04 · container — 15 sessions, last 2026-10-31 23:57 controlled
java-httpclient 25.0.5 · Ubuntu 26.04 · container — 1 session, last 2026-10-31 23:56 controlled
java-httpclient 25.0.4.1 · Ubuntu 26.04 · container — 3 sessions, last 2026-10-06 02:53 controlled
java-httpclient 25.0.4 · Ubuntu 26.04 · container — 2 sessions, last 2026-09-01 00:44 controlled
java-httpclient 25.0.3 · Ubuntu 26.04 · container — 3 sessions, last 2026-08-18 09:57 controlled
java-httpclient 26.0.1 · Ubuntu 26.04 · container — 1 session, last 2026-07-01 23:01 controlled
java-httpclient 21.0.11 · Ubuntu 22.04 · container — 2 sessions, last 2026-07-01 00:53 controlled
java-httpclient 21.0.11 · Linux · container — 1 session, last 2026-06-11 10:32 controlled

Last 7 days (11 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

Protocol	`t (TLS over TCP)`
TLS version	`13`
SNI	`d (domain)`
Cipher count	`31`
Extension count	`13`
ALPN	`h2`
Ciphers	`0032, 0033, 0038, 0039, 0040, 0067, 006a, 006b, 009e, 009f, 00a2, 00a3, 00ff, 1301, 1302, 1303, c009, c00a, c013, c014, c023, c024, c027, c028, c02b, c02c, c02f, c030, cca8, cca9, ccaa`
Extensions	`0005, 000a, 000b, 000d, 0011, 0017, 0023, 002b, 002d, 0032, 0033`
Signature algorithms	`0403, 0503, 0603, 0807, 0808, 0804, 0805, 0806, 0809, 080a, 080b, 0401, 0501, 0601, 0402, 0303, 0301, 0302`
JA4_r	`t13d3113h2_0032,0033,0038,0039,0040,0067,006a,006b,009e,009f,00a2,00a3,00ff,1301,1302,1303,c009,c00a,c013,c014,c023,c024,c027,c028,c02b,c02c,c02f,c030,cca8,cca9,ccaa_0005,000a,000b,000d,0011,0017,0023,002b,002d,0032,0033_0403,0503,0603,0807,0808,0804,0805,0806,0809,080a,080b,0401,0501,0601,0402,0303,0301,0302`
JA4_o (sample)	`t13d3113h2_cdf1781c2960_b5717d5caa7d`
JA4_ro (sample)	`t13d3113h2_1302,1301,1303,c02c,c02b,cca9,c030,cca8,c02f,009f,ccaa,00a3,009e,00a2,c024,c028,c023,c027,006b,006a,0067,0040,c00a,c014,c009,c013,0039,0038,0033,0032,00ff_0000,0005,000a,000b,0010,0011,0017,0023,000d,002b,002d,0032,0033_0403,0503,0603,0807,0808,0804,0805,0806,0809,080a,080b,0401,0501,0601,0402,0303,0301,0302`

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.

HTTP request (JA4H)

fingerprint	co-occurrences
`ge20nn030000_6dac75bd47eb_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: python-httpx 0.28.1.The fingerprint page shows the full measured match list. More on the catalog.	7
`ge20nn020000_e5a56608905c_000000000000_000000000000`	4

HTTP/2 frames (Akamai)

fingerprint	co-occurrences
`1:16384;2:0;3:0;4:16777216;5:16384;6:393216\|33488897\|0\|a,m,p,s` Match?Exact match in Thumbprint's published controlled catalog captures: java-httpclient 17.0.19, java-httpclient 11.0.31, java-httpclient 25.0.4.1, +8 more.The fingerprint page shows the full measured match list. More on the catalog.	11

TCP SYN (p0f)

fingerprint	co-occurrences
`4:42+22:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:0`	10
`4:53+11:0:1460:mss*29,12:mss,sok,ts,nop,ws:df,id+:0`	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`64240_2-4-8-1-3_1460_10`	10
`42340_2-4-8-1-3_1460_12`	1

User-Agent

fingerprint	co-occurrences
`AstraciaBot/1.0 (+https://astracia.com)`	7
`AstraciaBot/1.0 (+https://astracia.com/bot)`	3
`Mozilla/5.0 (compatible; KakaoBot/1.0; +https://developers.kakao.com/bot)`	1

Country

fingerprint	co-occurrences
`DE` · Germany	10
`KR` · South Korea	1

Network (ASN)

fingerprint	co-occurrences
`AS24940` · Hetzner Online GmbH	10
`AS7625` · Kakao Corp	1

TLS supported groups

fingerprint	co-occurrences
`001d,0017,0018,0019,001e,0100,0101,0102,0103,0104` Match?Exact match in Thumbprint's published controlled catalog captures: java-httpclient 17.0.19, java-httpclient 11.0.31, java-urlconnection 17.0.19, +2 more.The fingerprint page shows the full measured match list. More on the catalog.	11