TLS ClientHello (JA4)

t13d1011h2_61a7ad8aa9b6_f9531d972513

first seen 2026-06-19 19:10 · last seen 2026-10-31 19:17 · JSON

Last 7 days (15758 observations)

Distinct clients per day (last 30 days, peak 258/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	`10`
Extension count	`11`
ALPN	`h2`
Ciphers	`00ff, 1301, 1302, 1303, c02b, c02c, c02f, c030, cca8, cca9`
Extensions	`0005, 000a, 000b, 000d, 0017, 0023, 002b, 002d, 0033`
Signature algorithms	`0503, 0403, 0603, 0807, 0806, 0805, 0804, 0601, 0501, 0401`
JA4_r	`t13d1011h2_00ff,1301,1302,1303,c02b,c02c,c02f,c030,cca8,cca9_0005,000a,000b,000d,0017,0023,002b,002d,0033_0503,0403,0603,0807,0806,0805,0804,0601,0501,0401`
JA4_o (sample)	`t13d1011h2_b9b30c653583_d28f11131a5b`
JA4_ro (sample)	`t13d1011h2_1302,1301,1303,c02c,c02b,cca9,c030,c02f,cca8,00ff_002d,0023,0000,000b,0017,002b,0010,000a,000d,0005,0033_0503,0403,0603,0807,0806,0805,0804,0601,0501,0401`

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
`ge20nn09enus_14bb3be9acf4_000000000000_000000000000`	65
`ge20nn09enus_3cfb631e00fc_000000000000_000000000000`	64
`ge20nn09enus_b98f29bc4ddb_000000000000_000000000000`	60
`ge20nn09enus_99d83f5652e2_000000000000_000000000000`	58
`ge20nn09enus_bd0eefb4cd96_000000000000_000000000000`	58
`ge20nn09enus_1ceeac2b299f_000000000000_000000000000`	58
`ge20nn09enus_0baa322d1bd3_000000000000_000000000000`	58
`ge20nn09enus_c344dba4d909_000000000000_000000000000`	57
`ge20nn09enus_99cb9b120f73_000000000000_000000000000`	57
`ge20nn09enus_5127aede3961_000000000000_000000000000`	56

HTTP/2 frames (Akamai)

fingerprint	co-occurrences
`2:0;4:2097152;5:16384;6:16384\|5177345\|0\|m,s,a,p` Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28, rust-reqwest 0.13.5, rust-reqwest 0.13.4, +4 more.The fingerprint page shows the full measured match list. More on the catalog.	27942

TCP SYN (p0f)

fingerprint	co-occurrences
`4:55+9:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	14521
`4:56+8:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	13292
`4:50+14:0:1460:65535,10:mss,sok,ts,nop,ws:df,id+:0`	41
`4:44+20:0:1410:mss*46,7:mss,sok,ts,nop,ws:df,id+:0`	33
`4:43+21:0:1410:mss*46,7:mss,sok,ts,nop,ws:df,id+:0`	31
`4:49+15:0:1460:65535,10:mss,sok,ts,nop,ws:df,id+:0`	5
`4:55+9:0:1460:65535,10:mss,sok,ts,nop,ws:df,id+:0`	4
`4:54+10:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:0`	2
`4:47+17:0:1410:mss*46,7:mss,sok,ts,nop,ws:df,id+:0`	2
`4:47+17:0:1460:65535,10:mss,sok,ts,nop,ws:df,id+:0`	2

TCP SYN (JA4T)

fingerprint	co-occurrences
`64240_2-4-8-1-3_1460_7`	27817
`64860_2-4-8-1-3_1410_7`	60
`65535_2-4-8-1-3_1460_10`	53
`64240_2-4-8-1-3_1460_10`	2
`65280_2-4-8-1-3_1360_7`	1
`65535_2-1-3-1-1-4_1460_8`	1
`64240_2-4-8-1-3_1440_10`	1
`65280_2-4-8-1-3_1280_11`	1

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (compatible; ExaSearchBot/1.0; +https://crawler.exa.ai/)`	27772
`Mozilla/5.0 (compatible; ExaUser/1.0; +https://crawler.exa.ai/exauser)`	92
`Mozilla/5.0 (compatible; Qwantbot/1.0; +https://help.qwant.com/bot/)`	40
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36`	3
`Mozilla/5.0 (compatible; ExaUser/1.0; +https://exauser.crawler.exa.ai)`	3
`Mozilla/5.0 (compatible; Qwantbot/1.0_3000152; +https://help.qwant.com/bot/)`	2
`Mozilla/5.0 (X11; Linux x86_64; rv:128.0) Gecko/20100101 Firefox/128.0`	1
`Mozilla/5.0 (compatible; Qwantbot/1.0_1400144; +https://help.qwant.com/bot/)`	1
`Mozilla/5.0 (compatible; Qwantbot/1.0_1400240; +https://help.qwant.com/bot/)`	1
`Mozilla/5.0 (compatible; Qwantbot/1.0_3000212; +https://help.qwant.com/bot/)`	1

Country

fingerprint	co-occurrences
`US` · United States	27873
`FR` · France	66
`AU` · Australia	2
`RU` · Russia	1

Network (ASN)

fingerprint	co-occurrences
`AS30058` · FDCservers.net	27815
`AS199064` · QWANT SAS	66
`AS55286` · B2 Net Solutions Inc.	26
`AS46516` · HostRoyale LLC	15
`AS13332` · Hype Enterprises	5
`AS18779` · EGIHosting	4
`AS396356` · Latitude.sh	3
`AS38195` · Superloop	2
`AS36352` · HostPapa	2
`AS8075` · Microsoft Corporation	1

TLS supported groups

fingerprint	co-occurrences
`001d,0017,0018` Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28, rust-reqwest 0.11.27, powershell 7.6.8, +1 more.The fingerprint page shows the full measured match list. More on the catalog.	18152