TLS ClientHello (JA4)

t13d450900_d524c25c267f_9da38b6fd1bc

first seen 2026-06-13 01:39 · last seen 2026-11-01 19:38 · JSON

Last 7 days (683 observations)

Distinct clients per day (last 30 days, peak 133/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 count45
Extension count9
ALPN00
Ciphers002f, 0032, 0033, 0035, 0038, 0039, 003c, 003d, 0040, 0067, 006a, 006b, 009c, 009d, 009e, 009f, 00a2, 00a3, 00ff, 1301, 1302, 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, 0017, 002b, 002d, 0032, 0033
Signature algorithms0403, 0503, 0603, 0804, 0805, 0806, 0809, 080a, 080b, 0401, 0501, 0601, 0402, 0303, 0301, 0302, 0203, 0201, 0202
JA4_rt13d450900_002f,0032,0033,0035,0038,0039,003c,003d,0040,0067,006a,006b,009c,009d,009e,009f,00a2,00a3,00ff,1301,1302,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,0017,002b,002d,0032,0033_0403,0503,0603,0804,0805,0806,0809,080a,080b,0401,0501,0601,0402,0303,0301,0302,0203,0201,0202
JA4_o (sample)t13d450900_2c44d4803b25_6b6b1ebef3f0
JA4_ro (sample)t13d450900_1302,1301,c02c,c02b,c030,c02f,009f,00a3,009e,00a2,c024,c028,c023,c027,006b,006a,0067,0040,c02e,c032,c02d,c031,c026,c02a,c025,c029,c00a,c014,c009,c013,0039,0038,0033,0032,c005,c00f,c004,c00e,009d,009c,003d,003c,0035,002f,00ff_0000,000a,000b,000d,0032,0017,002b,002d,0033_0403,0503,0603,0804,0805,0806,0809,080a,080b,0401,0501,0601,0402,0303,0301,0302,0203,0201,0202

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_b47458f13025_000000000000_00000000000031696
ge11nn030000_0db47b7d240d_000000000000_000000000000121
ge11nn040000_04ca0b4904d5_000000000000_00000000000054
ge11nn040000_47c65c3b1146_000000000000_00000000000014
ge11nn040000_4f6f4aad0c1e_000000000000_0000000000002

TCP SYN (p0f)

fingerprintco-occurrences
4:116+12:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:013631
4:118+10:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:010496
4:112+16:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:03770
4:115+13:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:02629
4:111+17:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0743
4:119+9:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0597
4:120+8:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:014
4:117+11:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:03
4:46+18:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
4:114+14:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
62727_2-4-8-1-3_1460_731705
64240_2-4-8-1-3_1460_72

User-Agent

fingerprintco-occurrences
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.3631202
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/600.2.5 (KHTML, like Gecko) Version/8.0.2 Safari/600.2.5 (Gort)642
Mozilla/5.0 AppleWebKit/605.1.15 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/605.1.1537
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/600.2.5 (KHTML, like Gecko) Version/8.0.2 Safari/600.2.5 (Lanai)2
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/605.1.152

Country

fingerprintco-occurrences
US · United States31885
CN · China2

Network (ASN)

fingerprintco-occurrences
AS14618 · Amazon.com, Inc.31885
AS9808 · China Mobile Communications Group Co., Ltd.2

TLS supported groups

fingerprintco-occurrences
0017,0018,0019,0100,0101,0102,0103,0104 Match?Exact match in Thumbprint's published controlled catalog captures: java-urlconnection 1.8.0_492.The fingerprint page shows the full measured match list. More on the catalog.1806