TLS ClientHello (JA4)

t13d3112h2_e8f1e7e78f70_b26ce05bbdd6

first seen 2026-06-18 06:20 · last seen 2026-09-15 22:05 · 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

t13d3112h2_e8f1e7e78f70_b26ce05bbdd6

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	151.0.7922.174, 149.0.7827.103, 149.0.7827.53, 149.0.7827.115, 149.0.7827.114, 153.0.8010.47, 149.0.7827.54, 149.0.7827.201, 150.0.7871.187, 153.0.8010.36, 151.0.7922.170, 152.0.7977.83, 152.0.7977.82, 152.0.7977.65, 150.0.7871.114, 150.0.7871.115, 150.0.7871.129, 151.0.7922.72, 151.0.7922.137, 152.0.7977.75, 151.0.7922.173, 149.0.7827.102, 149.0.7827.156, 151.0.7922.71, 150.0.7871.128, 151.0.7922.108, 149.0.7827.155, 150.0.7871.125, 150.0.7871.46, 151.0.7922.109, 152.0.7977.64, 148.0.7778.179, 149.0.7827.200
Layer	cipher suites differ
JA4 label	unlabeled

medium

2026-09-13

2026-09-14

t13d3112h2_e8f1e7e78f70_b26ce05bbdd6

Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:147…

User-Agent claims Firefox 147.0

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:147.0) Gecko/20100101 Firefox/147.0
Claimed version	147.0
Measured versions	146.0.1, 152.0.1, 154.0, 140.0.2, 151.0.4, 151.0.2, 139.0, 153.0.1, 155.0, 152.0.5, 153.0.3, 142.0.1, 153.0.4, 152.0.6, 150.0.2, 135.0, 132.0, 152.0.3, 148.0.2, 137.0, 141.0, 155.0.1, 153.0, 151.0.3, 144.0.2, 154.0.1, 134.0, 152.0.4, 151.0
Layer	cipher suites differ
JA4 label	unlabeled

medium

2026-06-20

Last 7 days (29 observations)

Distinct clients per day (last 30 days, peak 7/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	`31`
Extension count	`12`
ALPN	`h2`
Ciphers	`002f, 0033, 0035, 0039, 003c, 003d, 0067, 006b, 009c, 009d, 009e, 009f, 00ff, 1301, 1302, 1303, c009, c00a, c013, c014, c023, c024, c027, c028, c02b, c02c, c02f, c030, cca8, cca9, ccaa`
Extensions	`000a, 000b, 000d, 0015, 0016, 0017, 002b, 002d, 0031, 0033`
Signature algorithms	`0403, 0503, 0603, 0807, 0808, 0809, 080a, 080b, 0804, 0805, 0806, 0401, 0501, 0601, 0303, 0301, 0302, 0402, 0502, 0602`
JA4_r	`t13d3112h2_002f,0033,0035,0039,003c,003d,0067,006b,009c,009d,009e,009f,00ff,1301,1302,1303,c009,c00a,c013,c014,c023,c024,c027,c028,c02b,c02c,c02f,c030,cca8,cca9,ccaa_000a,000b,000d,0015,0016,0017,002b,002d,0031,0033_0403,0503,0603,0807,0808,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0301,0302,0402,0502,0602`
JA4_o (sample)	`t13d3112h2_d7c3e2abb617_cad92ccb4254`
JA4_ro (sample)	`t13d3112h2_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,00ff_0000,000b,000a,0010,0016,0017,0031,000d,002b,002d,0033,0015_0403,0503,0603,0807,0808,0809,080a,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
`ge20nn020000_5594a17e7e7e_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0, curl 8.18.0, +9 more.The fingerprint page shows the full measured match list. More on the catalog.	2663
`ge20nn060000_2a1d139103bd_000000000000_000000000000`	149
`ge20nn070000_475aaf807767_000000000000_000000000000`	39
`ge20nn040000_c6bfc298f9f7_000000000000_000000000000`	10
`ge20nn04enus_1f85cee3b49d_000000000000_000000000000`	3
`ge20nn06enus_c0e090d478a9_000000000000_000000000000`	1
`ge20nr030000_042112399351_000000000000_000000000000`	1
`he20nn030000_c0d7f5f1a627_000000000000_000000000000`	1
`ge20nn020000_79258615d613_000000000000_000000000000`	1
`ge20nn030000_ff50983941c1_000000000000_000000000000`	1

HTTP/2 frames (Akamai)

fingerprint	co-occurrences
`3:100;4:10485760;2:0\|1048510465\|0\|m,s,a,p` Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0.The fingerprint page shows the full measured match list. More on the catalog.	2672
`3:100;4:65536;2:0\|1048510465\|0\|m,s,a,p` Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0, curl 8.18.0, curl 8.21.0, +7 more.The fingerprint page shows the full measured match list. More on the catalog.	188
`2:0;4:4194304;5:16384;6:10485760\|1073741824\|0\|m,a,s,p`	10
`3:100;4:33554432;2:0\|33488897\|0\|m,p,s,a` Match?Exact match in Thumbprint's published controlled catalog captures: php-curl 7.88.1.The fingerprint page shows the full measured match list. More on the catalog.	5

TCP SYN (p0f)

fingerprint	co-occurrences
`4:51+13:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:0`	239
`4:52+12:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:0`	230
`4:50+14:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:0`	109
`4:53+11:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:0`	104
`4:51+13:0:1460:65535,4:mss,sok,ts,nop,ws:df,id+:0`	97
`4:52+12:0:1460:65535,4:mss,sok,ts,nop,ws:df,id+:0`	80
`4:52+12:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	75
`4:51+13:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	68
`4:50+14:0:1460:65535,4:mss,sok,ts,nop,ws:df,id+:0`	54
`4:46+18:0:1460:65535,14:mss,sok,ts,nop,ws:df,id+,ecn:0`	52

TCP SYN (JA4T)

fingerprint	co-occurrences
`65535_2-4-8-1-3_1460_6`	879
`65535_2-4-8-1-3_1460_4`	385
`64240_2-4-8-1-3_1460_7`	301
`65535_2-4-8-1-3_1460_2`	214
`65535_2-4-8-1-3_1460_8`	169
`65535_2-4-8-1-3_1460_14`	148
`64800_2-4-8-1-3_1440_7`	114
`65535_2-4-8-1-3_1368_6`	60
`65535_2-4-8-1-3_1440_6`	53
`64240_2-4-8-1-3_1368_7`	28

User-Agent

fingerprint	co-occurrences
`curl/8.5.0`	2655
`Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)`	188
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) Chrome/152.0.0.0`	5
`Mozilla/5.0`	4
`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 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36`	3
`curl/7.88.1`	3
`prefix-fetch/1.0`	2
`n0v8ba6-research/1.0 (+https://n0v8ba6.com)`	2
`Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.36`	1

Country

fingerprint	co-occurrences
`US` · United States	2622
`CA` · Canada	61
`GB` · United Kingdom	45
`FR` · France	42
`DE` · Germany	25
`ID` · Indonesia	15
`NL` · Netherlands	13
`SG` · Singapore	13
`JP` · Japan	9
`TR` · Turkey	9

Network (ASN)

fingerprint	co-occurrences
`AS7018` · AT&T Enterprises, LLC	645
`AS7922` · Comcast Cable Communications, LLC	637
`AS5650` · Verizon Business	241
`AS16276` · OVH SAS	177
`AS6167` · Verizon Business	169
`AS701` · Verizon Business	160
`AS33363` · Charter Communications, Inc	129
`AS20115` · Charter Communications LLC	105
`AS12083` · WideOpenWest Finance LLC	62
`AS21928` · T-Mobile USA, Inc.	54

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
`q13d0311h3_55b375c5d22e_653d80c3fe9d`	2