TLS ClientHello (JA4)

t13d3514h1_bfa337485184_678a800b2221

first seen 2026-07-18 17:11 · last seen 2026-09-20 22:27 · JSON

Decomposed attributes

Protocolt (TLS over TCP)
TLS version13
SNId (domain)
Cipher count35
Extension count14
ALPNh1
Ciphers002f, 0033, 0035, 0039, 003c, 003d, 0067, 006b, 009c, 009d, 009e, 009f, 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, 0015, 0016, 0017, 001b, 0023, 002b, 002d, 0033, ff01
Signature algorithms0403, 0503, 0603, 0807, 0808, 0809, 080a, 080b, 0804, 0805, 0806, 0401, 0501, 0601, 0303, 0301
JA4_rt13d3514h1_002f,0033,0035,0039,003c,003d,0067,006b,009c,009d,009e,009f,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,0015,0016,0017,001b,0023,002b,002d,0033,ff01_0403,0503,0603,0807,0808,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0301
JA4_o (sample)t13d3514h1_f8a84e837758_f7a034fe9016
JA4_ro (sample)t13d3514h1_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,009f,ccaa,c09f,009e,c09e,006b,0067,0039,0033_ff01,0000,000b,000a,0023,0010,0016,0017,000d,002b,002d,0033,001b,0015_0403,0503,0603,0807,0808,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0301

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_50034e570378_000000000000_0000000000003
ge11nn050000_be0d0b335e46_000000000000_0000000000002
ge11nn040000_e1d2031bdfea_000000000000_0000000000001
ge11cn040000_e1d2031bdfea_0316f1c41b17_4abadb6098f31
ge11nn07enus_0620a9ced396_000000000000_0000000000001
ge11nn07enus_c5479ee49fdc_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:117+11:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:03
4:114+14:0:1460:62727,9:mss,sok,ts,nop,ws:df,id+:03
4:119+9:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:02
4:54+10:0:1460:mss*22,7:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
62727_2-4-8-1-3_1460_75
62727_2-4-8-1-3_1460_93
32120_2-4-8-1-3_1460_71

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (compatible; getdomaindata/1.0; +https://getdomaindata.com/bot)3
Mozilla/5.0 (compatible; MeasureboardResearchBot/1.0; +https://measureboard.com/bot)2
Claude-User2
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.361
titlegrabber/1.0 (+kontak-anda@example.com)1

Country

fingerprintco-occurrences
US · United States5
GB · United Kingdom3
KR · South Korea1

Network (ASN)

fingerprintco-occurrences
AS14618 · Amazon.com, Inc.5
AS16509 · Amazon.com, Inc.3
AS4766 · Korea Telecom1