TLS ClientHello (JA4)

t13d2013h1_2b729b4bf6f3_e24568c0d440

first seen 2026-06-26 20:18 · last seen 2026-11-01 18:40 · JSON

Inconsistencies

User-Agents observed with this fingerprint that contradict what it proves at the wire. all inconsistencies →

fingerprint User-Agent claims wire shows confidence seen first seen last seen

t13d2013h1_2b729b4bf6f3_e24568c0d440

Mozilla/5.0 (Windows NT 10.0; Win64; x64) Chrome…

User-Agent claims Chrome 152.0.0.0

TLS cipher list matches no measured Chrome capture

The offered TLS cipher suites match no controlled capture of Chrome. Cipher lists are very stable per browser, so a different one is a real inconsistency — though a TLS-inspecting proxy re-originating the handshake is an honest cause, which holds this at medium.

Full User-Agent	Mozilla/5.0 (Windows NT 10.0; Win64; x64) Chrome/152.0.0.0
Claimed version	152.0.0.0
Measured versions	149.0.7827.103, 149.0.7827.53, 149.0.7827.115, 153.0.8010.47, 149.0.7827.54, 155.0.8059.79, 153.0.8010.36, 151.0.7922.170, 156.0.8078.48, 152.0.7977.82, 152.0.7977.65, 156.0.8078.73, 156.0.8078.74, 155.0.8059.84, 150.0.7871.129, 155.0.8059.40, 154.0.8037.58, 151.0.7922.173, 149.0.7827.156, 151.0.7922.71, 150.0.7871.128, 154.0.8037.97, 149.0.7827.155, 151.0.7922.109, 152.0.7977.64, 156.0.8078.79, 149.0.7827.200, 151.0.7922.174, 153.0.8010.53, 149.0.7827.114, 154.0.8037.57, 149.0.7827.201, 150.0.7871.187, 152.0.7977.83, 153.0.8010.52, 150.0.7871.114, 155.0.8059.39, 150.0.7871.115, 151.0.7922.72, 151.0.7922.137, 152.0.7977.75, 154.0.8037.92, 156.0.8078.47, 149.0.7827.102, 151.0.7922.108, 150.0.7871.125, 150.0.7871.46, 148.0.7778.179
Layer	cipher suites differ
JA4 label	unlabeled

medium

2026-09-14

t13d2013h1_2b729b4bf6f3_e24568c0d440

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleW…

User-Agent claims Chrome 156.0.0.0

TLS cipher list matches no measured Chrome capture

Full User-Agent	Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/156.0.0.0 Safari/537.36
Claimed version	156.0.0.0
Measured versions	149.0.7827.103, 149.0.7827.53, 149.0.7827.115, 153.0.8010.47, 149.0.7827.54, 155.0.8059.79, 153.0.8010.36, 151.0.7922.170, 156.0.8078.48, 152.0.7977.82, 152.0.7977.65, 156.0.8078.73, 156.0.8078.74, 155.0.8059.84, 150.0.7871.129, 155.0.8059.40, 154.0.8037.58, 151.0.7922.173, 149.0.7827.156, 151.0.7922.71, 150.0.7871.128, 154.0.8037.97, 149.0.7827.155, 151.0.7922.109, 152.0.7977.64, 156.0.8078.79, 149.0.7827.200, 151.0.7922.174, 153.0.8010.53, 149.0.7827.114, 154.0.8037.57, 149.0.7827.201, 150.0.7871.187, 152.0.7977.83, 153.0.8010.52, 150.0.7871.114, 155.0.8059.39, 150.0.7871.115, 151.0.7922.72, 151.0.7922.137, 152.0.7977.75, 154.0.8037.92, 156.0.8078.47, 149.0.7827.102, 151.0.7922.108, 150.0.7871.125, 150.0.7871.46, 148.0.7778.179
Layer	cipher suites differ
JA4 label	unlabeled

medium

2026-10-30

2026-11-01

t13d2013h1_2b729b4bf6f3_e24568c0d440

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleW…

User-Agent claims Chrome 152.0.0.0

TLS cipher list matches no measured Chrome capture

Full User-Agent	Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.36
Claimed version	152.0.0.0
Measured versions	149.0.7827.103, 149.0.7827.53, 149.0.7827.115, 153.0.8010.47, 149.0.7827.54, 155.0.8059.79, 153.0.8010.36, 151.0.7922.170, 156.0.8078.48, 152.0.7977.82, 152.0.7977.65, 156.0.8078.73, 156.0.8078.74, 155.0.8059.84, 150.0.7871.129, 155.0.8059.40, 154.0.8037.58, 151.0.7922.173, 149.0.7827.156, 151.0.7922.71, 150.0.7871.128, 154.0.8037.97, 149.0.7827.155, 151.0.7922.109, 152.0.7977.64, 156.0.8078.79, 149.0.7827.200, 151.0.7922.174, 153.0.8010.53, 149.0.7827.114, 154.0.8037.57, 149.0.7827.201, 150.0.7871.187, 152.0.7977.83, 153.0.8010.52, 150.0.7871.114, 155.0.8059.39, 150.0.7871.115, 151.0.7922.72, 151.0.7922.137, 152.0.7977.75, 154.0.8037.92, 156.0.8078.47, 149.0.7827.102, 151.0.7922.108, 150.0.7871.125, 150.0.7871.46, 148.0.7778.179
Layer	cipher suites differ
JA4 label	unlabeled

medium

2026-09-09

2026-09-13

t13d2013h1_2b729b4bf6f3_e24568c0d440

Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140…

User-Agent claims Firefox 140.0

TLS cipher list matches no measured Firefox capture

The offered TLS cipher suites match no controlled capture of Firefox. Cipher lists are very stable per browser, so a different one is a real inconsistency — though a TLS-inspecting proxy re-originating the handshake is an honest cause, which holds this at medium.

Full User-Agent	Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Firefox/140.0
Claimed version	140.0
Measured versions	146.0.1, 154.0, 140.0.2, 157.0.1, 151.0.2, 155.0, 153.0.3, 142.0.1, 153.0.4, 152.0.6, 150.0.2, 135.0, 156.0.1, 132.0, 152.0.3, 141.0, 153.0, 151.0.3, 156.0, 152.0.4, 151.0, 152.0.1, 151.0.4, 139.0, 153.0.1, 158.0.1, 152.0.5, 157.0, 158.0, 148.0.2, 137.0, 155.0.1, 159.0, 144.0.2, 154.0.1, 134.0
Layer	cipher suites differ
JA4 label	unlabeled

medium

2026-07-25

Last 7 days (29 observations)

Distinct clients per day (last 30 days, peak 166/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	`20`
Extension count	`13`
ALPN	`h1`
Ciphers	`002f, 0035, 003c, 003d, 009c, 009d, 1301, 1302, c009, c00a, c013, c014, c023, c024, c027, c028, c02b, c02c, c02f, c030`
Extensions	`0005, 000a, 000b, 000d, 0017, 0023, 002b, 002d, 0031, 0033, ff01`
Signature algorithms	`0804, 0805, 0806, 0401, 0501, 0201, 0403, 0503, 0203, 0202, 0601, 0603`
JA4_r	`t13d2013h1_002f,0035,003c,003d,009c,009d,1301,1302,c009,c00a,c013,c014,c023,c024,c027,c028,c02b,c02c,c02f,c030_0005,000a,000b,000d,0017,0023,002b,002d,0031,0033,ff01_0804,0805,0806,0401,0501,0201,0403,0503,0203,0202,0601,0603`
JA4_o (sample)	`t13d2013h1_1079d97b4c9b_53aa1bee5020`
JA4_ro (sample)	`t13d2013h1_1302,1301,c02c,c02b,c030,c02f,c024,c023,c028,c027,c00a,c009,c014,c013,009d,009c,003d,003c,0035,002f_0000,0005,002b,000d,0023,000a,000b,0010,0033,0031,0017,ff01,002d_0804,0805,0806,0401,0501,0201,0403,0503,0203,0202,0601,0603`

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
`ge11nn030000_fe444ad14866_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.16.0, curl 7.88.1, curl 8.21.0, +1 more.The fingerprint page shows the full measured match list. More on the catalog.	2253
`ge11nn040000_e1d2031bdfea_000000000000_000000000000`	2
`he11nn030000_fe444ad14866_000000000000_000000000000`	2
`ge11nn030000_042112399351_000000000000_000000000000`	1
`ge11nn030000_0d34275228c4_000000000000_000000000000`	1
`ge11nn030000_f929366f5b36_000000000000_000000000000`	1

TCP SYN (p0f)

fingerprint	co-occurrences
`4:50+14:0:1460:65535,4:mss,sok,ts,nop,ws:df,id+:0`	101
`4:51+13:0:1460:65535,4:mss,sok,ts,nop,ws:df,id+:0`	96
`4:49+15:0:1460:65535,4:mss,sok,ts,nop,ws:df,id+:0`	95
`4:52+12:0:1460:65535,4:mss,sok,ts,nop,ws:df,id+:0`	93
`4:49+15:0:1460:65535,2:mss,sok,ts,nop,ws:df,id+:0`	77
`4:50+14:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:0`	70
`4:53+11:0:1460:65535,4:mss,sok,ts,nop,ws:df,id+:0`	67
`4:48+16:0:1460:65535,4:mss,sok,ts,nop,ws:df,id+:0`	61
`4:48+16:0:1460:65535,2:mss,sok,ts,nop,ws:df,id+:0`	60
`4:50+14:0:1460:65535,2:mss,sok,ts,nop,ws:df,id+:0`	58

TCP SYN (JA4T)

fingerprint	co-occurrences
`65535_2-4-8-1-3_1460_4`	677
`65535_2-4-8-1-3_1460_2`	468
`65535_2-4-8-1-3_1460_6`	317
`64240_2-4-8-1-3_1460_7`	157
`65535_2-4-8-1-3_1460_8`	76
`64240_2-1-3-1-1-4_1360_8`	39
`65535_2-4-8-1-3_1440_6`	36
`65535_2-4-8-1-3_1432_2`	26
`64240_2-1-3-1-1-4_1400_8`	24
`65535_2-4-8-1-3_1452_4`	23

User-Agent

fingerprint	co-occurrences
`curl/8.21.0`	2097
`curl/8.18.0`	86
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) Chrome/152.0.0.0`	22
`curl/8.13.0`	13
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/156.0.0.0 Safari/537.36`	10
`curl/8.19.0`	8
`curl/8.16.0`	7
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.36`	4
`Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Firefox/140.0`	3
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36`	3

Country

fingerprint	co-occurrences
`US` · United States	2069
`JP` · Japan	106
`VN` · Vietnam	15
`ES` · Spain	11
`PK` · Pakistan	11
`GB` · United Kingdom	10
`DE` · Germany	5
`NL` · Netherlands	5
`CA` · Canada	3
`PL` · Poland	3

Network (ASN)

fingerprint	co-occurrences
`AS7922` · Comcast Cable Communications, LLC	470
`AS7018` · AT&T Enterprises, LLC	196
`AS20115` · Charter Communications LLC	101
`AS11427` · Charter Communications Inc	79
`AS10796` · Charter Communications Inc	78
`AS701` · Verizon Business	68
`AS16591` · Google Fiber Inc.	68
`AS5650` · Verizon Business	61
`AS6167` · Verizon Business	56
`AS22773` · Cox Communications Inc.	45

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, winhttp 10.0.20348.1, +2 more.The fingerprint page shows the full measured match list. More on the catalog.	41