TLS ClientHello (JA4)

t12d180700_4b22cbed5bed_2dae41c691ec

first seen 2026-06-13 00:46 · last seen 2026-07-16 22:02 · JSON

Decomposed attributes

Protocolt (TLS over TCP)
TLS version12
SNId (domain)
Cipher count18
Extension count7
ALPN00
Ciphers002f, 0035, 003c, 003d, 009c, 009d, c009, c00a, c013, c014, c023, c024, c027, c028, c02b, c02c, c02f, c030
Extensions000a, 000b, 000d, 0017, 0023, ff01
Signature algorithms0804, 0805, 0806, 0401, 0501, 0201, 0403, 0503, 0203, 0202, 0601, 0603
JA4_rt12d180700_002f,0035,003c,003d,009c,009d,c009,c00a,c013,c014,c023,c024,c027,c028,c02b,c02c,c02f,c030_000a,000b,000d,0017,0023,ff01_0804,0805,0806,0401,0501,0201,0403,0503,0203,0202,0601,0603
JA4_o (sample)t12d180700_c9df9b5f81f0_e7395bd2f4a9
JA4_ro (sample)t12d180700_c02c,c02b,c030,c02f,c024,c023,c028,c027,c00a,c009,c014,c013,009d,009c,003d,003c,0035,002f_0000,000a,000b,000d,0023,0017,ff01_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)

fingerprintco-occurrences
ge11nn040000_cf1edba2959c_000000000000_00000000000013
ge11nn050000_2469c960a647_000000000000_0000000000009
ge11nn050000_fd72ab1ac915_000000000000_0000000000004
ge11nn030000_341eb0d8946c_000000000000_0000000000001
ge11nr11enus_85fe49c621a2_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:115+13:0:1380:65535,8:mss,nop,ws,nop,nop,sok:df,id+:09
4:110+18:0:1360:65535,8:mss,nop,ws,nop,nop,sok:df,id+:02
4:51+13:0:1380:65535,13:mss,sok,ts,nop,ws:df,id+:02
4:108+20:0:1380:65535,8:mss,nop,ws,nop,nop,sok:df,id+:02
4:50+14:0:1380:65535,13:mss,sok,ts,nop,ws:df,id+:02
4:118+10:0:1460:65535,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:01
4:101+27:0:1380:65535,8:mss,nop,ws,nop,nop,sok:df,id+:01
4:111+17:0:1380:65535,8:mss,nop,ws,nop,nop,sok:df,id+:01
4:108+20:0:1380:65535,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:01
4:47+17:0:1380:65535,13:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-4_1380_87
64860_2-1-3-1-1-4_1380_81

User-Agent

fingerprintco-occurrences
Mozilla/5.07
Mozilla/5.0 (Windows NT 10.0; Win64; rv:143.0) Gecko/20100101 Firefox/143.07
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 Chrome/129.0.0.0 Safari/537.366
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 Version/17.0 Safari/605.1.154
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:125.0) Gecko/20100101 Firefox/125.01
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/108.0.0.01
Mozilla/5.0 (Macintosh; Intel Mac OS X 14_4_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.361
Mozilla/5.0 (Linux; Android 15; Pixel 9) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Mobile Safari/537.361

Country

fingerprintco-occurrences
JP · Japan15
SG · Singapore4
BD · Bangladesh3
US · United States2
IN · India1
ES · Spain1
TW · Taiwan1
AT · Austria1

Network (ASN)

fingerprintco-occurrences
AS63949 · Akamai Connected Cloud12
AS13335 · Cloudflare, Inc.5
AS21859 · Zenlayer Inc4
AS9009 · M247 Europe SRL2
AS133605 · Bright Technologies Limited2
AS16509 · Amazon.com, Inc.1
AS46475 · Limestone Networks, Inc.1
AS136141 · Mohammad Kamrul Hasan t/a SK Traders1