TLS ClientHello (JA4)

t13d4113h1_8ae0994cad11_86f67be995ff

first seen 2026-06-17 02:57 · last seen 2026-10-21 23:51 · JSON

Distinct clients per day (last 30 days, peak 1/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 count41
Extension count13
ALPNh1
Ciphers002f, 0032, 0033, 0035, 0038, 0039, 003c, 003d, 0040, 0067, 006a, 006b, 009c, 009d, 009e, 009f, 00a2, 00a3, 1301, 1302, 1303, 1304, c009, c00a, c013, c014, c023, c027, c02b, c02c, c02f, c030, c09c, c09d, c09e, c09f, c0ac, c0ad, cca8, cca9, ccaa
Extensions000a, 000b, 000d, 0016, 0017, 001b, 002b, 002d, 0031, 0033, ff01
Signature algorithms0904, 0905, 0906, 0403, 0503, 0603, 0807, 0808, 0809, 080a, 080b, 0804, 0805, 0806, 0401, 0501, 0601, 0303, 0301, 0402, 0502, 0602, 0302
JA4_rt13d4113h1_002f,0032,0033,0035,0038,0039,003c,003d,0040,0067,006a,006b,009c,009d,009e,009f,00a2,00a3,1301,1302,1303,1304,c009,c00a,c013,c014,c023,c027,c02b,c02c,c02f,c030,c09c,c09d,c09e,c09f,c0ac,c0ad,cca8,cca9,ccaa_000a,000b,000d,0016,0017,001b,002b,002d,0031,0033,ff01_0904,0905,0906,0403,0503,0603,0807,0808,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0301,0402,0502,0602,0302
JA4_o (sample)t13d4113h1_105127c7c643_6e0ef15f811f
JA4_ro (sample)t13d4113h1_1302,1303,1301,1304,c02c,c030,cca9,cca8,c0ad,c02b,c02f,c0ac,c023,c027,c00a,c014,c009,c013,009d,c09d,009c,c09c,003d,003c,0035,002f,00a3,009f,ccaa,c09f,00a2,009e,c09e,006b,006a,0067,0040,0039,0038,0033,0032_ff01,0000,000b,000a,0010,0016,0017,0031,000d,002b,002d,0033,001b_0904,0905,0906,0403,0503,0603,0807,0808,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0301,0402,0502,0602,0302

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
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.8
ge11nn030000_042112399351_000000000000_0000000000003
he11nr030000_fe444ad14866_000000000000_0000000000002
ge11nr030000_fe444ad14866_000000000000_0000000000002
he11nn110000_6b353c1ce0f2_000000000000_0000000000002
ge11nn040000_9a9b5b4214ff_000000000000_0000000000001
he11nn050000_9af9c82ca00b_000000000000_0000000000001
ge11nn040000_fed47809a070_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:53+11:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:07
4:55+9:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:05
4:51+13:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:04
4:47+17:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:02
4:46+18:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:01
4:52+12:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_1017

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.3612
ThumbprintReferralValidation/20261012-10056
thumbprint-rate-canary/1.01
thumbprint-rate-canary-normal/1.01

Country

fingerprintco-occurrences
AU · Australia20

Network (ASN)

fingerprintco-occurrences
AS38195 · Superloop20

TLS supported groups

fingerprintco-occurrences
11ec,11eb,11ed,001d,0017,001e,0019,0018,0100,0101,0102,0103,0104 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.18.0.The fingerprint page shows the full measured match list. More on the catalog.2