TLS ClientHello (JA4)

t13d1717h2_5b57614c22b0_3cbfd9057e0d

first seen 2026-06-18 17:19 · last seen 2026-11-01 16:39 · JSON

Matches controlled captures

Known clients driven through this site's own edge produced this exact fingerprint — measured truth, not inference. catalog →

firefox 148.0.2 · Ubuntu 24.04 · via playwright · container — 2 sessions, last 2026-08-18 09:19 controlled
firefox 144.0.2 · Ubuntu 24.04 · via playwright · container — 2 sessions, last 2026-08-18 09:18 controlled
firefox 142.0.1 · Ubuntu 24.04 · via playwright · container — 2 sessions, last 2026-08-18 09:18 controlled
firefox 141.0 · Ubuntu 24.04 · via playwright · container — 2 sessions, last 2026-08-18 09:18 controlled
firefox 140.0.2 · Ubuntu 24.04 · via playwright · container — 2 sessions, last 2026-08-18 09:17 controlled
firefox 139.0 · Ubuntu 24.04 · via playwright · container — 2 sessions, last 2026-08-18 09:17 controlled
firefox 135.0 · Ubuntu 24.04 · via playwright · container — 2 sessions, last 2026-08-18 09:16 controlled
firefox 146.0.1 · Ubuntu 24.04 · via playwright · container — 2 sessions, last 2026-07-03 04:57 controlled
firefox 137.0 · Ubuntu 24.04 · via playwright · container — 2 sessions, last 2026-07-03 04:56 controlled

Last 7 days (9 observations)

Distinct clients per day (last 30 days, peak 3/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	`17`
Extension count	`17`
ALPN	`h2`
Ciphers	`002f, 0035, 009c, 009d, 1301, 1302, 1303, c009, c00a, c013, c014, c02b, c02c, c02f, c030, cca8, cca9`
Extensions	`0005, 000a, 000b, 000d, 0012, 0017, 001b, 001c, 0022, 0023, 002b, 002d, 0033, fe0d, ff01`
Signature algorithms	`0403, 0503, 0603, 0804, 0805, 0806, 0401, 0501, 0601, 0203, 0201`
JA4_r	`t13d1717h2_002f,0035,009c,009d,1301,1302,1303,c009,c00a,c013,c014,c02b,c02c,c02f,c030,cca8,cca9_0005,000a,000b,000d,0012,0017,001b,001c,0022,0023,002b,002d,0033,fe0d,ff01_0403,0503,0603,0804,0805,0806,0401,0501,0601,0203,0201`
JA4_o (sample)	`t13d1717h2_5b234860e130_df135d36b6d5`
JA4_ro (sample)	`t13d1717h2_1301,1303,1302,c02b,c02f,cca9,cca8,c02c,c030,c00a,c009,c013,c014,009c,009d,002f,0035_0000,0017,ff01,000a,000b,0023,0010,0005,0022,0012,0033,002b,000d,002d,001c,001b,fe0d_0403,0503,0603,0804,0805,0806,0401,0501,0601,0203,0201`

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
`ge20nn11enus_3901d4197baf_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 152.0.5, firefox 153.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog.	95
`ge20nr10enus_b3034183f430_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 155.0.1, +28 more.The fingerprint page shows the full measured match list. More on the catalog.	28
`ge20nn10ruru_d353d425b0bb_000000000000_000000000000`	17
`ge20nr10ruru_b3034183f430_000000000000_000000000000`	16
`ge20nn11ruru_3901d4197baf_000000000000_000000000000`	16
`ge20nn11zhcn_3901d4197baf_000000000000_000000000000`	14
`ge20nr10zhcn_b3034183f430_000000000000_000000000000`	10
`ge20nr11enus_dff93ddcf3c8_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 132.0, firefox 151.0.3, firefox 151.0.4, +1 more.The fingerprint page shows the full measured match list. More on the catalog.	8
`ge20nr12enus_a72b71f519fc_000000000000_000000000000`	8
`ge20nr11enus_3901d4197baf_000000000000_000000000000`	8

HTTP/2 frames (Akamai)

fingerprint	co-occurrences
`1:65536;2:0;4:131072;5:16384\|12517377\|3:0:0:42\|m,p,a,s` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 152.0.5, firefox 152.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog.	78
`1:65536;2:0;4:131072;5:16384\|12517377\|3:0:0:22\|m,p,a,s` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 155.0.1, +32 more.The fingerprint page shows the full measured match list. More on the catalog.	73
`1:65536;2:0;4:131072;5:16384\|12517377\|1:0:0:42\|m,p,a,s`	70
`1:65536;2:0;4:131072;5:16384\|12517377\|1:0:0:256\|m,p,a,s`	20
`1:65536;2:0;4:131072;5:16384\|12517377\|5:0:0:22\|m,p,a,s` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0.3, firefox 154.0, firefox 153.0, +13 more.The fingerprint page shows the full measured match list. More on the catalog.	14
`1:65536;2:0;4:131072;5:16384\|12517377\|7:0:0:22\|m,p,a,s` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0.3, firefox 158.0.1, firefox 155.0, +4 more.The fingerprint page shows the full measured match list. More on the catalog.	12
`1:65536;2:0;4:131072;5:16384\|12517377\|5:0:0:42\|m,p,a,s`	10
`1:65536;2:0;4:131072;5:16384\|12517377\|9:0:0:42\|m,p,a,s`	5
`1:65536;2:0;4:131072;5:16384\|12517377\|7:0:0:42\|m,p,a,s`	5
`1:65536;2:0;4:131072;5:16384\|12517377\|9:0:0:22\|m,p,a,s`	4

TCP SYN (p0f)

fingerprint	co-occurrences
`4:36+28:0:1460:65228,7:mss,nop,ws,sok,ts:df:0`	35
`4:51+13:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	29
`4:113+15:0:1440:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:0`	18
`6:47+17:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:0`	12
`4:52+12:0:1380:mss*47,10:mss,sok,ts,nop,ws:df,id+:0`	11
`4:37+27:0:1460:65228,7:mss,nop,ws,sok,ts:df:0`	10
`6:55+9:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:0`	8
`4:48+16:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:0`	6
`4:49+15:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:0`	5
`4:52+12:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	5

TCP SYN (JA4T)

fingerprint	co-occurrences
`65228_2-1-3-4-8_1460_7`	47
`64240_2-4-8-1-3_1460_7`	42
`64800_2-4-8-1-3_1440_7`	26
`64240_2-1-3-1-1-4_1440_8`	21
`64860_2-4-8-1-3_1380_10`	13
`64240_2-4-8-1-3_1460_10`	11
`61160_2-1-3-4-1-1_1390_8`	8
`64240_2-4-8-1-3_1360_7`	7
`42340_2-4-8-1-3_1460_7`	7
`65535_2-1-3-1-1-8-4-0-0_1460_6`	6

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Firefox/140.0`	80
`Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:149.0) Gecko/20100101 Firefox/149.0`	42
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:147.0) Gecko/20100101 Firefox/147.0`	36
`Mozilla/5.0 (X11; Linux x86_64; rv:149.0) Gecko/20100101 Firefox/149.0`	31
`Mozilla/5.0 (X11; Linux x86_64; rv:146.0) Gecko/20100101 Firefox/146.0`	16
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:135.0) Gecko/20100101 Firefox/135.0`	13
`Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0`	7
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:144.0) Gecko/20100101 Firefox/144.0`	6
`Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:136.0) Gecko/20100101 Firefox/136.0`	6
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:140.0) Gecko/20100101 Firefox/140.0`	5

Country

fingerprint	co-occurrences
`US` · United States	54
`RU` · Russia	51
`ID` · Indonesia	38
`NL` · Netherlands	29
`SE` · Sweden	18
`HK` · Hong Kong SAR China	17
`FI` · Finland	17
`DE` · Germany	14
`CA` · Canada	10
`CN` · China	9

Network (ASN)

fingerprint	co-occurrences
`AS41601` · NEO Print Ltd.	47
`AS9657` · Melsa-i-net AS	21
`AS136907` · HUAWEI CLOUDS	17
`AS24940` · Hetzner Online GmbH	13
`AS19318` · Interserver, Inc	13
`AS4761` · INDOSAT Internet Network Provider	11
`AS50053` · VDSka hosting	10
`AS213230` · Hetzner Online GmbH	10
`AS55990` · Huawei Cloud Service data center	9
`AS27284` · Fourplex Telecom LLC	8

TLS supported groups

fingerprint	co-occurrences
`11ec,001d,0017,0018,0019,0100,0101`	12

Cross-transport links

TLS ClientHello fingerprints observed from the same client via the beacon's correlation id on the other transport (e.g. this stack over TCP ↔ that stack over QUIC).

fingerprint	linked observations
`q13d0314h3_55b375c5d22e_61e396c58b1f`	14
`q13d0315h3_55b375c5d22e_dc5437974b47`	5

fingerprint	co-occurrences
`1:65536;2:0;4:131072;5:16384\|12517377\|3:0:0:42\|m,p,a,s` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 152.0.5, firefox 152.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog.	78
`1:65536;2:0;4:131072;5:16384\|12517377\|3:0:0:22\|m,p,a,s` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 155.0.1, +32 more.The fingerprint page shows the full measured match list. More on the catalog.	73
`1:65536;2:0;4:131072;5:16384\|12517377\|1:0:0:42\|m,p,a,s`	70
`1:65536;2:0;4:131072;5:16384\|12517377\|1:0:0:256\|m,p,a,s`	20
`1:65536;2:0;4:131072;5:16384\|12517377\|5:0:0:22\|m,p,a,s` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0.3, firefox 154.0, firefox 153.0, +13 more.The fingerprint page shows the full measured match list. More on the catalog.	14
`1:65536;2:0;4:131072;5:16384\|12517377\|7:0:0:22\|m,p,a,s` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0.3, firefox 158.0.1, firefox 155.0, +4 more.The fingerprint page shows the full measured match list. More on the catalog.	12
`1:65536;2:0;4:131072;5:16384\|12517377\|5:0:0:42\|m,p,a,s`	10
`1:65536;2:0;4:131072;5:16384\|12517377\|9:0:0:42\|m,p,a,s`	5
`1:65536;2:0;4:131072;5:16384\|12517377\|7:0:0:42\|m,p,a,s`	5
`1:65536;2:0;4:131072;5:16384\|12517377\|9:0:0:22\|m,p,a,s`	4