TLS ClientHello (JA4)

t13d3513h2_bfa337485184_8d7351bd871b

first seen 2026-07-06 10:28 · last seen 2026-10-06 02:49 · JSON

Decomposed attributes

Protocol	`t (TLS over TCP)`
TLS version	`13`
SNI	`d (domain)`
Cipher count	`35`
Extension count	`13`
ALPN	`h2`
Ciphers	`002f, 0033, 0035, 0039, 003c, 003d, 0067, 006b, 009c, 009d, 009e, 009f, 1301, 1302, 1303, 1304, c009, c00a, c013, c014, c023, c027, c02b, c02c, c02f, c030, c09c, c09d, c09e, c09f, c0ac, c0ad, cca8, cca9, ccaa`
Extensions	`000a, 000b, 000d, 0016, 0017, 001b, 002b, 002d, 0031, 0033, ff01`
Signature algorithms	`0904, 0905, 0906, 0403, 0503, 0603, 0807, 0808, 0809, 080a, 080b, 0804, 0805, 0806, 0401, 0501, 0601, 0303, 0301`
JA4_r	`t13d3513h2_002f,0033,0035,0039,003c,003d,0067,006b,009c,009d,009e,009f,1301,1302,1303,1304,c009,c00a,c013,c014,c023,c027,c02b,c02c,c02f,c030,c09c,c09d,c09e,c09f,c0ac,c0ad,cca8,cca9,ccaa_000a,000b,000d,0016,0017,001b,002b,002d,0031,0033,ff01_0904,0905,0906,0403,0503,0603,0807,0808,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0301`
JA4_o (sample)	`t13d3513h2_f8a84e837758_5cc6710dfadd`
JA4_ro (sample)	`t13d3513h2_1302,1303,1301,1304,c02c,c030,cca9,cca8,c0ad,c02b,c02f,c0ac,c023,c027,c00a,c014,c009,c013,009d,c09d,009c,c09c,003d,003c,0035,002f,009f,ccaa,c09f,009e,c09e,006b,0067,0039,0033_ff01,0000,000b,000a,0010,0016,0017,0031,000d,002b,002d,0033,001b_0904,0905,0906,0403,0503,0603,0807,0808,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0301`

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
`ge20nn020000_5594a17e7e7e_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0, curl 8.13.0, +11 more.The fingerprint page shows the full measured match list. More on the catalog.	8

HTTP/2 frames (Akamai)

fingerprint	co-occurrences
`3:100;4:65536;2:0\|1048510465\|0\|m,s,a,p` Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0, curl 8.18.0, curl 8.21.0, +8 more.The fingerprint page shows the full measured match list. More on the catalog.	8

TCP SYN (p0f)

fingerprint	co-occurrences
`4:53+11:0:1380:mss*47,10:mss,sok,ts,nop,ws:df,id+:0`	3
`4:54+10:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:0`	1
`4:45+19:0:1340:mss*48,10:mss,sok,ts,nop,ws:df,id+:0`	1
`4:53+11:0:1452:mss*44,10:mss,sok,ts,nop,ws:df,id+:0`	1
`6:244+11:0:1432:mss*45,10:mss,sok,ts,nop,ws:flow:0`	1
`6:44+20:0:1320:65535,12:mss,nop,ws,sok,ts::0`	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`64860_2-4-8-1-3_1380_10`	3
`64240_2-4-8-1-3_1460_10`	1
`64320_2-4-8-1-3_1340_10`	1
`64440_2-4-8-1-3_1432_10`	1
`65535_2-1-3-4-8_1320_12`	1
`64240_2-4-8-1-3_1452_10`	1

User-Agent

fingerprint	co-occurrences
`curl/8.18.0`	4
`curl/8.15.0`	3
`curl/8.20.0`	1

Country

fingerprint	co-occurrences
`US` · United States	3
`AU` · Australia	1
`DE` · Germany	1
`GB` · United Kingdom	1
`ES` · Spain	1
`CY` · Cyprus	1

Network (ASN)

fingerprint	co-occurrences
`AS19318` · Interserver, Inc	2
`AS57169` · EDIS GmbH	1
`AS136557` · Host Universal Pty Ltd	1
`AS3352` · TELEFONICA DE ESPANA S.A.U.	1
`AS3320` · Deutsche Telekom AG	1
`AS206067` · Hutchison 3G UK Limited	1
`AS3737` · PenTeleData Inc.	1