TLS ClientHello (JA4)

t13d1910h2_9dc949149365_97f8aa674fd9

first seen 2026-06-12 14:37 · last seen 2026-08-31 05:48 · JSON

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	`19`
Extension count	`10`
ALPN	`h2`
Ciphers	`000a, 002f, 0035, 009c, 009d, 1301, 1302, 1303, c009, c00a, c012, c013, c014, c02b, c02c, c02f, c030, cca8, cca9`
Extensions	`0005, 000a, 000b, 000d, 0012, 002b, 0033, ff01`
Signature algorithms	`0804, 0403, 0807, 0805, 0806, 0401, 0501, 0601, 0503, 0603, 0201, 0203`
JA4_r	`t13d1910h2_000a,002f,0035,009c,009d,1301,1302,1303,c009,c00a,c012,c013,c014,c02b,c02c,c02f,c030,cca8,cca9_0005,000a,000b,000d,0012,002b,0033,ff01_0804,0403,0807,0805,0806,0401,0501,0601,0503,0603,0201,0203`
JA4_o (sample)	`t13d1910h2_f2ce2cda000b_55c1f85328e7`
JA4_ro (sample)	`t13d1910h2_cca8,cca9,c02f,c030,c02b,c02c,c013,c009,c014,c00a,009c,009d,002f,0035,c012,000a,1303,1301,1302_0000,0005,000a,000b,000d,ff01,0010,0012,002b,0033_0804,0403,0807,0805,0806,0401,0501,0601,0503,0603,0201,0203`

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
`ge20nn040000_be74ea4f9dce_000000000000_000000000000`	7
`ge20nr040000_88d30a62b7ad_000000000000_000000000000`	1
`ge20nr040000_56db3665e6ca_000000000000_000000000000`	1
`ge20nn030000_ff50983941c1_000000000000_000000000000`	1
`ge20nn030000_80b089f68b8e_000000000000_000000000000`	1
`ge20nn04enus_118e0135d6ef_000000000000_000000000000`	1
`he20nn010000_a510e5066512_000000000000_000000000000`	1

HTTP/2 frames (Akamai)

fingerprint	co-occurrences
`2:0;4:4194304;5:16384;6:10485760\|1073741824\|0\|a,m,p,s` Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.8, go-net/http 1.26.7, +6 more.The fingerprint page shows the full measured match list. More on the catalog.	9
`2:0;4:4194304;6:10485760\|1073741824\|0\|a,m,p,s` Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.21.13, go-net/http 1.23.12.The fingerprint page shows the full measured match list. More on the catalog.	4

TCP SYN (p0f)

fingerprint	co-occurrences
`4:48+16:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	4
`4:44+20:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	3
`4:47+17:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:43+21:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:46+18:0:1436:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:56+8:0:1460:mss*29,12:mss,sok,ts,nop,ws:df,id+:0`	1
`4:120+8:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:58+6:0:1420:mss*30,9:mss,sok,ts,nop,ws:df,id+:0`	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`64240_2-4-8-1-3_1460_7`	1
`62727_2-4-8-1-3_1460_7`	1
`42340_2-4-8-1-3_1460_12`	1
`42600_2-4-8-1-3_1420_9`	1

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (Windows NT 10.0; Win64; x64)`	7
`Mozilla/5.0 zgrab/0.x`	1
`Go-http-client/2.0`	1
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36`	1
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36`	1
`Mozilla/5.0 (compatible; scanhawk/0.1; +https://scanhawk.net/scanner)`	1
`Mozilla/5.0 (compatible; SemrushBot; +http://www.semrush.com/bot.html)`	1

Country

fingerprint	co-occurrences
`US` · United States	9
`NL` · Netherlands	1
`CA` · Canada	1
`FR` · France	1
`ID` · Indonesia	1

Network (ASN)

fingerprint	co-occurrences
`AS45102` · Alibaba (US) Technology Co., Ltd.	7
`AS16276` · OVH SAS	2
`AS396982` · Google LLC	1
`AS16509` · Amazon.com, Inc.	1
`AS48090` · TECHOFF SRV LIMITED	1
`AS150249` · PT Atharva Telematika Persada	1