TLS ClientHello (JA4)

t13d1514h2_8daaf6152771_43ade6aba3df

first seen 2026-07-01 17:02 · last seen 2026-09-18 17:35 · JSON

Decomposed attributes

Protocol	`t (TLS over TCP)`
TLS version	`13`
SNI	`d (domain)`
Cipher count	`15`
Extension count	`14`
ALPN	`h2`
Ciphers	`002f, 0035, 009c, 009d, 1301, 1302, 1303, c013, c014, c02b, c02c, c02f, c030, cca8, cca9`
Extensions	`0005, 000a, 000b, 000d, 0012, 0015, 0017, 0023, 002b, 002d, 0033, ff01`
Signature algorithms	`0403, 0804, 0401, 0503, 0805, 0501, 0806, 0601, 0201`
JA4_r	`t13d1514h2_002f,0035,009c,009d,1301,1302,1303,c013,c014,c02b,c02c,c02f,c030,cca8,cca9_0005,000a,000b,000d,0012,0015,0017,0023,002b,002d,0033,ff01_0403,0804,0401,0503,0805,0501,0806,0601,0201`
JA4_o (sample)	`t13d1514h2_acb858a92679_345c1640beb9`
JA4_ro (sample)	`t13d1514h2_1301,1302,1303,c02b,c02f,c02c,c030,cca9,cca8,c013,c014,009c,009d,002f,0035_0000,0017,ff01,000a,000b,0023,0010,0005,000d,0012,0033,002d,002b,0015_0403,0804,0401,0503,0805,0501,0806,0601,0201`

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_b89ce445e0b3_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.21.13, go-net/http 1.27.1, go-net/http 1.27.3, +14 more.The fingerprint page shows the full measured match list. More on the catalog.	14
`ge20nn030000_80b089f68b8e_000000000000_000000000000`	7
`ge20nn040000_45d26b037ca1_000000000000_000000000000`	3

HTTP/2 frames (Akamai)

fingerprint	co-occurrences
`4:16777216\|16711681\|0\|m,p,a,s`	24

TCP SYN (p0f)

fingerprint	co-occurrences
`4:48+16:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:0`	8
`4:54+10:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:0`	7
`4:49+15:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:0`	3
`4:48+16:0:1460:65535,8:mss,sok,ts,nop,ws:df,id+:0`	1
`4:58+6:0:1240:65535,9:mss,sok,ts,nop,ws:df,id+:0`	1
`4:50+14:0:1460:65535,8:mss,sok,ts,nop,ws:df,id+:0`	1
`6:47+17:0:1220:65535,9:mss,sok,ts,nop,ws:flow:0`	1
`6:55+9:0:1440:mss*45,10:mss,sok,ts,nop,ws:flow:0`	1
`6:52+12:0:1440:mss*45,10:mss,sok,ts,nop,ws:flow:0`	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`64240_2-4-8-1-3_1460_10`	18
`64800_2-4-8-1-3_1440_10`	2
`65535_2-4-8-1-3_1460_8`	2
`65535_2-4-8-1-3_1220_9`	1
`65535_2-4-8-1-3_1240_9`	1

User-Agent

fingerprint	co-occurrences
`okhttp/3.14.9`	5
`Harmonic-HN-Android/3.0.1/release`	3
`okhttp/4.12.0`	3
`ktor-client`	3
`okhttp/5.5.0`	3
`Ktor client`	3
`okhttp/4.9.2`	3
`Harmonic-HN-Android/3.0.2/release`	1

Country

fingerprint	co-occurrences
`US` · United States	16
`NL` · Netherlands	7
`FI` · Finland	1

Network (ASN)

fingerprint	co-occurrences
`AS132892` · Cloudflare, Inc.	13
`AS202623` · Cloudflare Inc	7
`AS15169` · Google LLC	1
`AS50304` · Blix Solutions AS	1
`AS7922` · Comcast Cable Communications, LLC	1
`AS5650` · Verizon Business	1