TLS ClientHello (JA4)

t13d450900_d524c25c267f_9da38b6fd1bc

first seen 2026-06-13 01:39 · last seen 2026-09-16 15:55 · JSON

Last 7 days (4534 observations)

Distinct clients per day (last 30 days, peak 425/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	`45`
Extension count	`9`
ALPN	`00`
Ciphers	`002f, 0032, 0033, 0035, 0038, 0039, 003c, 003d, 0040, 0067, 006a, 006b, 009c, 009d, 009e, 009f, 00a2, 00a3, 00ff, 1301, 1302, c004, c005, c009, c00a, c00e, c00f, c013, c014, c023, c024, c025, c026, c027, c028, c029, c02a, c02b, c02c, c02d, c02e, c02f, c030, c031, c032`
Extensions	`000a, 000b, 000d, 0017, 002b, 002d, 0032, 0033`
Signature algorithms	`0403, 0503, 0603, 0804, 0805, 0806, 0809, 080a, 080b, 0401, 0501, 0601, 0402, 0303, 0301, 0302, 0203, 0201, 0202`
JA4_r	`t13d450900_002f,0032,0033,0035,0038,0039,003c,003d,0040,0067,006a,006b,009c,009d,009e,009f,00a2,00a3,00ff,1301,1302,c004,c005,c009,c00a,c00e,c00f,c013,c014,c023,c024,c025,c026,c027,c028,c029,c02a,c02b,c02c,c02d,c02e,c02f,c030,c031,c032_000a,000b,000d,0017,002b,002d,0032,0033_0403,0503,0603,0804,0805,0806,0809,080a,080b,0401,0501,0601,0402,0303,0301,0302,0203,0201,0202`
JA4_o (sample)	`t13d450900_2c44d4803b25_6b6b1ebef3f0`
JA4_ro (sample)	`t13d450900_1302,1301,c02c,c02b,c030,c02f,009f,00a3,009e,00a2,c024,c028,c023,c027,006b,006a,0067,0040,c02e,c032,c02d,c031,c026,c02a,c025,c029,c00a,c014,c009,c013,0039,0038,0033,0032,c005,c00f,c004,c00e,009d,009c,003d,003c,0035,002f,00ff_0000,000a,000b,000d,0032,0017,002b,002d,0033_0403,0503,0603,0804,0805,0806,0809,080a,080b,0401,0501,0601,0402,0303,0301,0302,0203,0201,0202`

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
`ge11nn040000_b47458f13025_000000000000_000000000000`	28173
`ge11nn030000_0db47b7d240d_000000000000_000000000000`	121
`ge11nn040000_04ca0b4904d5_000000000000_000000000000`	54
`ge11nn040000_47c65c3b1146_000000000000_000000000000`	14
`ge11nn040000_4f6f4aad0c1e_000000000000_000000000000`	1

TCP SYN (p0f)

fingerprint	co-occurrences
`4:116+12:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0`	11171
`4:118+10:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0`	10496
`4:112+16:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0`	3132
`4:115+13:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0`	2628
`4:111+17:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0`	743
`4:119+9:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0`	175
`4:120+8:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0`	13
`4:117+11:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0`	2
`4:46+18:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:114+14:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0`	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`62727_2-4-8-1-3_1460_7`	28182
`64240_2-4-8-1-3_1460_7`	1

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36`	27882
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/600.2.5 (KHTML, like Gecko) Version/8.0.2 Safari/600.2.5 (Gort)`	439
`Mozilla/5.0 AppleWebKit/605.1.15 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/605.1.15`	37
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/600.2.5 (KHTML, like Gecko) Version/8.0.2 Safari/600.2.5 (Lanai)`	2
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/605.1.15`	2
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36`	1

Country

fingerprint	co-occurrences
`US` · United States	28362
`CN` · China	1

Network (ASN)

fingerprint	co-occurrences
`AS14618` · Amazon.com, Inc.	28362
`AS9808` · China Mobile Communications Group Co., Ltd.	1