TLS ClientHello (JA4)

t13d1411h2_cbb2034c60b8_e7c285222651

first seen 2026-06-11 10:58 · last seen 2026-09-14 04:54 · JSON

Last 7 days (3 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 version13
SNId (domain)
Cipher count14
Extension count11
ALPNh2
Ciphers1301, 1302, 1303, c009, c00a, c012, c013, c014, 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_rt13d1411h2_1301,1302,1303,c009,c00a,c012,c013,c014,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)t13d1411h2_d6258c3c5426_76bc775a3afc
JA4_ro (sample)t13d1411h2_c02b,c02f,c02c,c030,cca9,cca8,c009,c013,c00a,c014,c012,1301,1302,1303_0000,0005,000a,000b,000d,ff01,0017,0010,0012,002b,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
ge20nr020000_fb4f949fd323_000000000000_00000000000035
ge20nr030000_0db47b7d240d_000000000000_0000000000004
ge20nn020000_fb4f949fd323_000000000000_0000000000001
ge20nr010000_a510e5066512_000000000000_0000000000001
ge20nn03en00_e01356d67f74_000000000000_0000000000001
ge20nn03en00_88df97815551_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;4:4194304;6:10485760|1073741824|0|a,m,p,s Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.21.13, go-net/http 1.23.12.The fingerprint page shows the full measured match list. More on the catalog.43

TCP SYN (p0f)

fingerprintco-occurrences
4:122+6:0:1420:mss*46,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:033
4:117+11:0:1420:mss*46,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:03
4:43+21:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:02
4:119+9:0:1420:mss*46,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:02
4:45+19:0:1452:mss*44,10:mss,sok,ts,nop,ws:df,id+:02
4:52+12:0:1460:mss*44,11:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
65320_2-1-3-1-1-4_1420_834
64240_2-4-8-1-3_1460_102
64240_2-4-8-1-3_1452_102
64240_2-4-8-1-3_1460_111

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (compatible; CMS-Checker/1.0; +https://example.com)29
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.369
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.362
PipericBot/1.0 (+https://piperic.com/bot)2
Mozilla/5.01

Country

fingerprintco-occurrences
US · United States34
NL · Netherlands3
DE · Germany2
VN · Vietnam2
BE · Belgium1
TH · Thailand1

Network (ASN)

fingerprintco-occurrences
AS396982 · Google LLC38
AS24940 · Hetzner Online GmbH2
AS7552 · Viettel Group2
AS56309 · Siamdata Communication Co.,Ltd.1