TLS ClientHello (JA4)

t12d4906h1_730fb1b0ac6a_22a92d800fe4

first seen 2026-07-26 06:11 · last seen 2026-10-31 19:21 · JSON

Last 7 days (12 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 version12
SNId (domain)
Cipher count49
Extension count6
ALPNh1
Ciphers002f, 0030, 0031, 0033, 0035, 0036, 0037, 0039, 003c, 003d, 003e, 003f, 0067, 0068, 0069, 006b, 009c, 009d, 009e, 009f, 00a0, 00a1, 00a4, 00a5, 00ff, c004, c005, c009, c00a, c00e, c00f, c013, c014, c023, c024, c025, c026, c027, c028, c029, c02a, c02b, c02c, c02d, c02e, c02f, c030, c031, c032
Extensions000a, 000b, 000d, 000f
Signature algorithms0601, 0602, 0603, 0501, 0502, 0503, 0401, 0402, 0403, 0301, 0302, 0303, 0201, 0202, 0203
JA4_rt12d4906h1_002f,0030,0031,0033,0035,0036,0037,0039,003c,003d,003e,003f,0067,0068,0069,006b,009c,009d,009e,009f,00a0,00a1,00a4,00a5,00ff,c004,c005,c009,c00a,c00e,c00f,c013,c014,c023,c024,c025,c026,c027,c028,c029,c02a,c02b,c02c,c02d,c02e,c02f,c030,c031,c032_000a,000b,000d,000f_0601,0602,0603,0501,0502,0503,0401,0402,0403,0301,0302,0303,0201,0202,0203
JA4_o (sample)t12d4906h1_7829709d0b44_4362be925519
JA4_ro (sample)t12d4906h1_c030,c02c,c02f,c02b,009f,009e,c032,c02e,c031,c02d,00a5,00a1,00a4,00a0,c028,c024,c014,c00a,c02a,c026,c00f,c005,c027,c023,c013,c009,c029,c025,c00e,c004,006b,0069,0068,0039,0037,0036,0067,003f,003e,0033,0031,0030,009d,009c,003d,0035,003c,002f,00ff_0000,000b,000a,000d,000f,0010_0601,0602,0603,0501,0502,0503,0401,0402,0403,0301,0302,0303,0201,0202,0203

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
ge11nn050000_b223a0ebb0b5_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: python-requests 2.34.2, python-requests 2.33.1, python-requests 2.32.3.The fingerprint page shows the full measured match list. More on the catalog.95
ge11nn07zhcn_ad6bb88d6320_000000000000_00000000000013

TCP SYN (p0f)

fingerprintco-occurrences
4:48+16:0:1460:mss*29,12:mss,sok,ts,nop,ws:df,id+:091
4:34+30:0:1460:mss*20,7:mss,sok,ts,nop,ws:df,id+:09
4:48+16:0:1460:mss*20,7:mss,sok,ts,nop,ws:df,id+:03
4:35+29:0:1460:mss*20,7:mss,sok,ts,nop,ws:df,id+:03
4:37+27:0:1460:mss*20,7:mss,sok,ts,nop,ws:df,id+:01
4:49+15:0:1460:mss*29,12:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
42340_2-4-8-1-3_1460_1292
29200_2-4-8-1-3_1460_716

User-Agent

fingerprintco-occurrences
python-requests/2.27.176
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.3619
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11) AppleWebKit/601.1.27 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/601.1.275
Dalvik/2.1.0 (Linux; U; Android 9.0; ZTE BA520 Build/MRA58K)4
Mozilla/5.0 (iPhone; CPU iPhone OS 11_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15G77 MicroMessenger/6.6.5 NetType/4G Language/zh_CN1
Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.8 (KHTML, like Gecko) Chrome/17.0.940.0 Safari/535.81
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.8) Gecko/20051201 Firefox/1.51
Opera/8.53 (Windows NT 5.2; U; en)1

Country

fingerprintco-occurrences
NL · Netherlands95
CN · China13

Network (ASN)

fingerprintco-occurrences
AS49870 · Alsycon B.V.95
AS58461 · CT HangZhou IDC13

TLS supported groups

fingerprintco-occurrences
0017,0019,0018,001631