TLS ClientHello (JA4)

t12d490600_730fb1b0ac6a_a1e935682795

first seen 2026-06-15 02:24 · last seen 2026-09-10 15:41 · JSON

Last 7 days (4 observations)

Distinct clients per day (last 30 days, peak 3/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
ALPN00
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, 0023
Signature algorithms0601, 0602, 0603, 0501, 0502, 0503, 0401, 0402, 0403, 0301, 0302, 0303, 0201, 0202, 0203
JA4_rt12d490600_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,0023_0601,0602,0603,0501,0502,0503,0401,0402,0403,0301,0302,0303,0201,0202,0203
JA4_o (sample)t12d490600_7829709d0b44_0ca94ab2d640
JA4_ro (sample)t12d490600_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,0023,000d,000f_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
ge11nn07zhcn_ad6bb88d6320_000000000000_00000000000025
ge11nn06zhcn_2d855731be57_000000000000_0000000000007

TCP SYN (p0f)

fingerprintco-occurrences
4:41+23:0:1460:mss*20,7:mss,sok,ts,nop,ws:df,id+:06
4:34+30:0:1460:mss*20,7:mss,sok,ts,nop,ws:df,id+:06
4:39+25:0:1460:mss*20,7:mss,sok,ts,nop,ws:df,id+:04
4:44+20:0:1460:mss*20,7:mss,sok,ts,nop,ws:df,id+:04
4:45+19:0:1460: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+:02
4:31+1:0:1460:mss*20,7:mss,sok,ts,nop,ws:df,id+:02
4:43+21:0:1460:mss*20,7:mss,sok,ts,nop,ws:df,id+:02

TCP SYN (JA4T)

fingerprintco-occurrences
29200_2-4-8-1-3_1460_725

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11) AppleWebKit/601.1.27 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/601.1.2715
Dalvik/2.1.0 (Linux; U; Android 9.0; ZTE BA520 Build/MRA58K)10
Mozilla/5.0 (X11; U; Linux x86_64; it; rv:1.9.1.9) Gecko/20100330 Fedora/3.5.9-2.fc12 Firefox/3.5.91
Mozilla/5.0 (X11; U; Linux i686; de; rv:1.9.2.10) Gecko/20100915 Ubuntu/10.04 (lucid) Firefox/3.6.101
Mozilla/5.0 (Linux; U; Android 5.1.1; zh-CN; vivo X7L Build/LMY47V) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/57.0.2987.108 UCBrowser/11.9.4.974 UWS/2.14.0.5 Mobile Safari/537.36 AliApp(TB/7.8.7) UCBS/2.11.1.1 TTID/600129@taobao_android_7.8.7 WindVane/8.3.0 1080X19201
Mozilla/5.0 (X11; U; Linux i686; en-GB; rv:1.9.0.6) Gecko/2009020911 Ubuntu/8.10 (intrepid) Firefox/3.0.61
Mozilla/5.0 (ZX-81; U; CP/M86; en-US; rv:1.8.0.1) Gecko/20060111 Firefox/1.5.0.11
Mozilla/5.0 (Linux; Android 8.0; LON-AL00 Build/HUAWEILON-AL00; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/48.0.2564.116 Mobile Safari/537.36 T7/10.10 baiduboxapp/10.10.0.12 (Baidu; P1 8.0.0)1
Mozilla/5.0 (Linux; Android 8.1; MI 8 SE Build/OPM1.171019.019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/57.0.2987.132 MQQBrowser/6.2 TBS/044113 Mobile Safari/537.36 V1_AND_SQ_7.7.0_882_YYB_D QQ/7.7.0.3640 NetType/WIFI WebP/0.3.0 Pixel/10801

Country

fingerprintco-occurrences
CN · China32

Network (ASN)

fingerprintco-occurrences
AS4811 · China Telecom (Group)17
AS58461 · CT HangZhou IDC12
AS4134 · CHINANET BACKBONE3