TLS ClientHello (JA4)

t13d301200_1d37bd780c83_ecd0401ec68b

first seen 2026-07-01 16:14 · last seen 2026-09-14 01:43 · JSON

Last 7 days (1 observations)

Distinct clients per day (last 30 days, peak 2/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

Protocolt (TLS over TCP)
TLS version13
SNId (domain)
Cipher count30
Extension count12
ALPN00
Ciphers002f, 0033, 0035, 0039, 003c, 003d, 0067, 006b, 009c, 009d, 009e, 009f, 1301, 1302, 1303, c009, c00a, c013, c014, c023, c024, c027, c028, c02b, c02c, c02f, c030, cca8, cca9, ccaa
Extensions000a, 000b, 000d, 0016, 0017, 001b, 0023, 002b, 002d, 0033, ff01
Signature algorithms0905, 0906, 0904, 0403, 0503, 0603, 0807, 0808, 081a, 081b, 081c, 0809, 080a, 080b, 0804, 0805, 0806, 0401, 0501, 0601, 0303, 0301, 0302, 0402, 0502, 0602
JA4_rt13d301200_002f,0033,0035,0039,003c,003d,0067,006b,009c,009d,009e,009f,1301,1302,1303,c009,c00a,c013,c014,c023,c024,c027,c028,c02b,c02c,c02f,c030,cca8,cca9,ccaa_000a,000b,000d,0016,0017,001b,0023,002b,002d,0033,ff01_0905,0906,0904,0403,0503,0603,0807,0808,081a,081b,081c,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0301,0302,0402,0502,0602
JA4_o (sample)t13d301200_8d44cdc55eec_021275ec1813
JA4_ro (sample)t13d301200_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_ff01,0000,000b,000a,0023,0016,0017,000d,002b,002d,0033,001b_0905,0906,0904,0403,0503,0603,0807,0808,081a,081b,081c,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)

fingerprintco-occurrences
ge11nn040000_5b1e8b5f4d2d_000000000000_0000000000006
ge11nn050000_3658ef221638_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: wget 1.21.4, wget 1.21.3, wget 1.25.0.The fingerprint page shows the full measured match list. More on the catalog.4
ge11nn05enus_6f062c0f61f5_000000000000_0000000000003
ge11nn06enus_c11ebffaa84b_000000000000_0000000000002
ge11nn06en00_c11ebffaa84b_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:57+7:0:1420:mss*30,7:mss,sok,ts,nop,ws:df,id+:04
6:52+12:0:8940:mss*7,7:mss,sok,ts,nop,ws:flow:03
4:56+8:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
4:52+12:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01
4:49+15:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01
6:47+17:0:1440:mss*45,10:mss,sok,ts,nop,ws:flow:01
4:44+20:0:1440:mss*44,10:mss,sok,ts,nop,ws:df,id+:01
4:53+11:0:1380:65535,13:mss,sok,ts,nop,ws:df,id+:01
6:45+19:0:1320:mss*45,8:mss,sok,ts,nop,ws:flow:01
6:47+17:0:1320:mss*45,8:mss,sok,ts,nop,ws:flow:01

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_74
42600_2-4-8-1-3_1420_74
62580_2-4-8-1-3_8940_73
64800_2-4-8-1-3_1320_82
64800_2-4-8-1-3_1440_101
64240_2-4-8-1-3_1440_101
65535_2-4-8-1-3_1380_131

User-Agent

fingerprintco-occurrences
Mozilla/5.0 Firefox/33.04
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.363
Mozilla/5.02
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0 Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.361
Mozilla/5.0 (compatible; RSSReader/1.0)1
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2227.1 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.85 Safari/537.361
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.1) Gecko/2008070208 Firefox/3.0.11

Country

fingerprintco-occurrences
US · United States5
FR · France3
TR · Turkey3
GB · United Kingdom2
DE · Germany1
NL · Netherlands1
HK · Hong Kong SAR China1

Network (ASN)

fingerprintco-occurrences
AS396982 · Google LLC4
AS44382 · Fiba Cloud Operation Company, LLC3
AS215599 · Zkillu SAS3
AS210644 · AEZA GROUP LLC2
AS8075 · Microsoft Corporation1
AS13335 · Cloudflare, Inc.1
AS51167 · Contabo GmbH1
AS4760 · HKT Limited1