TLS ClientHello (JA4)

t13d301200_1d37bd780c83_ecd0401ec68b

first seen 2026-07-01 16:14 · last seen 2026-10-29 00:22 · JSON

Last 7 days (12 observations)

Distinct clients per day (last 30 days, peak 6/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	`30`
Extension count	`12`
ALPN	`00`
Ciphers	`002f, 0033, 0035, 0039, 003c, 003d, 0067, 006b, 009c, 009d, 009e, 009f, 1301, 1302, 1303, c009, c00a, c013, c014, c023, c024, c027, c028, c02b, c02c, c02f, c030, cca8, cca9, ccaa`
Extensions	`000a, 000b, 000d, 0016, 0017, 001b, 0023, 002b, 002d, 0033, ff01`
Signature algorithms	`0905, 0906, 0904, 0403, 0503, 0603, 0807, 0808, 081a, 081b, 081c, 0809, 080a, 080b, 0804, 0805, 0806, 0401, 0501, 0601, 0303, 0301, 0302, 0402, 0502, 0602`
JA4_r	`t13d301200_002f,0033,0035,0039,003c,003d,0067,006b,009c,009d,009e,009f,1301,1302,1303,c009,c00a,c013,c014,c023,c024,c027,c028,c02b,c02c,c02f,c030,cca8,cca9,ccaa_000a,000b,000d,0016,0017,001b,0023,002b,002d,0033,ff01_0905,0906,0904,0403,0503,0603,0807,0808,081a,081b,081c,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0301,0302,0402,0502,0602`
JA4_o (sample)	`t13d301200_8d44cdc55eec_021275ec1813`
JA4_ro (sample)	`t13d301200_1302,1303,1301,c02c,c030,009f,cca9,cca8,ccaa,c02b,c02f,009e,c024,c028,006b,c023,c027,0067,c00a,c014,0039,c009,c013,0033,009d,009c,003d,003c,0035,002f_ff01,0000,000b,000a,0023,0016,0017,000d,002b,002d,0033,001b_0905,0906,0904,0403,0503,0603,0807,0808,081a,081b,081c,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0301,0302,0402,0502,0602`

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_5b1e8b5f4d2d_000000000000_000000000000`	17
`ge11nn050000_3658ef221638_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: wget 1.21.4, wget 1.25.0, wget 1.21.3.The fingerprint page shows the full measured match list. More on the catalog.	5
`ge11nn05enus_6f062c0f61f5_000000000000_000000000000`	3
`ge11nn05de00_d479504c460e_000000000000_000000000000`	3
`ge11nn06enus_c11ebffaa84b_000000000000_000000000000`	2
`ge11nn050000_ea6f06182064_000000000000_000000000000`	1
`ge11nn06en00_c11ebffaa84b_000000000000_000000000000`	1

TCP SYN (p0f)

fingerprint	co-occurrences
`4:57+7:0:1420:mss*30,7:mss,sok,ts,nop,ws:df,id+:0`	4
`6:61+3:0:1220:65535,9:mss,sok,ts,nop,ws:flow:0`	4
`6:52+12:0:8940:mss*7,7:mss,sok,ts,nop,ws:flow:0`	3
`4:56+8:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	2
`4:53+11:0:1380:65535,13:mss,sok,ts,nop,ws:df,id+:0`	2
`4:60+4:0:1460:65535,9:mss,sok,ts,nop,ws:df,id+:0`	2
`6:58+6:0:1220:65535,9:mss,sok,ts,nop,ws:flow:0`	2
`4:52+12:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:49+15:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:55+9:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`65535_2-4-8-1-3_1220_9`	7
`64240_2-4-8-1-3_1460_7`	5
`42600_2-4-8-1-3_1420_7`	4
`65535_2-4-8-1-3_1460_9`	4
`62580_2-4-8-1-3_8940_7`	3
`64480_2-4-8-1-3_1240_10`	3
`65535_2-4-8-1-3_1380_13`	2
`64800_2-4-8-1-3_1320_8`	2
`64800_2-4-8-1-3_1440_10`	1
`64240_2-4-8-1-3_1440_10`	1

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 Chrome/120 Safari/537.36`	6
`Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 Chrome/126 Safari/537.36`	6
`Mozilla/5.0 Firefox/33.0`	4
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36`	3
`Mozilla/5.0`	2
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0 Safari/537.36`	2
`Mozilla/5.0 (X11; Linux x86_64) Chrome/120`	2
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36`	1
`Mozilla/5.0 (compatible; RSSReader/1.0)`	1
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2227.1 Safari/537.36`	1

Country

fingerprint	co-occurrences
`US` · United States	18
`GB` · United Kingdom	5
`FR` · France	3
`TR` · Turkey	3
`DE` · Germany	1
`NL` · Netherlands	1
`HK` · Hong Kong SAR China	1

Network (ASN)

fingerprint	co-occurrences
`AS54113` · Fastly, Inc.	11
`AS396982` · Google LLC	4
`AS44382` · Fiba Cloud Operation Company, LLC	3
`AS215599` · Zkillu SAS	3
`AS41230` · ASK4 Limited	3
`AS13335` · Cloudflare, Inc.	2
`AS210644` · AEZA GROUP LLC	2
`AS8075` · Microsoft Corporation	1
`AS51167` · Contabo GmbH	1
`AS4760` · HKT Limited	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.	13