TLS ClientHello (JA4)

t13d301000_3c43a67630b3_e7c285222651

first seen 2026-06-11 22:35 · last seen 2026-08-28 23:11 · JSON

Distinct clients per day (last 30 days, peak 8/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 count30
Extension count10
ALPN00
Ciphers0004, 0005, 000a, 002f, 0035, 003c, 003d, 009c, 009d, 1301, 1302, 1303, c007, c008, c009, c00a, c011, c012, c013, c014, c023, c024, c027, c028, c02b, c02c, c02f, c030, cca8, cca9
Extensions0005, 000a, 000b, 000d, 0012, 0017, 002b, 0033, ff01
Signature algorithms0804, 0403, 0807, 0805, 0806, 0401, 0501, 0601, 0503, 0603, 0201, 0203
JA4_rt13d301000_0004,0005,000a,002f,0035,003c,003d,009c,009d,1301,1302,1303,c007,c008,c009,c00a,c011,c012,c013,c014,c023,c024,c027,c028,c02b,c02c,c02f,c030,cca8,cca9_0005,000a,000b,000d,0012,0017,002b,0033,ff01_0804,0403,0807,0805,0806,0401,0501,0601,0503,0603,0201,0203
JA4_o (sample)t13d301000_703df89aaf03_e7abbb9eee14
JA4_ro (sample)t13d301000_c02b,c02f,c02c,c030,cca9,cca8,c009,c013,c00a,c014,009c,009d,002f,0035,c008,c012,000a,c024,c028,c023,c027,003c,003d,c007,c011,0005,0004,1301,1302,1303_0000,0005,000a,000b,000d,ff01,0017,0012,002b,0033_0804,0403,0807,0805,0806,0401,0501,0601,0503,0603,0201,0203

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
ge11nr050000_3658ef221638_000000000000_00000000000016
ge11nr040000_88d30a62b7ad_000000000000_0000000000009
ge11nn050000_845398f9f2c0_000000000000_0000000000002
ge11nn040000_88d30a62b7ad_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: wget 1.25.0.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (p0f)

fingerprintco-occurrences
4:48+16:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:010
4:49+15:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:010
4:47+17:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:08

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_718

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (compatible; InternetMeasurement/1.0; +https://internet-measurement.com/)28

Country

fingerprintco-occurrences
GB · United Kingdom28

Network (ASN)

fingerprintco-occurrences
AS211298 · Driftnet Ltd28