TLS ClientHello (JA4)

t13d221100_231e334592e8_36bf25f296df

first seen 2026-06-15 14:52 · last seen 2026-10-21 13:15 · JSON

Distinct clients per day (last 30 days, peak 2/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 count22
Extension count11
ALPN00
Ciphers002f, 0035, 003c, 003d, 009c, 009d, 009e, 009f, 1301, 1302, c009, c00a, c013, c014, c023, c024, c027, c028, c02b, c02c, c02f, c030
Extensions000a, 000b, 000d, 0017, 0023, 002b, 002d, 0031, 0033, ff01
Signature algorithms0804, 0805, 0806, 0401, 0501, 0201, 0403, 0503, 0203, 0202, 0601, 0603
JA4_rt13d221100_002f,0035,003c,003d,009c,009d,009e,009f,1301,1302,c009,c00a,c013,c014,c023,c024,c027,c028,c02b,c02c,c02f,c030_000a,000b,000d,0017,0023,002b,002d,0031,0033,ff01_0804,0805,0806,0401,0501,0201,0403,0503,0203,0202,0601,0603
JA4_o (sample)t13d221100_fd6997f2ee80_05ede352cda5
JA4_ro (sample)t13d221100_1302,1301,c02c,c02b,c030,c02f,009f,009e,c024,c023,c028,c027,c00a,c009,c014,c013,009d,009c,003d,003c,0035,002f_0000,002b,000d,0023,000a,000b,0033,0031,0017,ff01,002d_0804,0805,0806,0401,0501,0201,0403,0503,0203,0202,0601,0603

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
ge11nn020000_818f42cc3fd7_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: php-guzzle 8.2.0, php-guzzle 8.1.0, php-guzzle 8.0.2, +13 more.The fingerprint page shows the full measured match list. More on the catalog.7
ge11nn15enus_35372a7bda31_000000000000_0000000000003
ge11nn07en00_39c70cc1573e_000000000000_0000000000002
he11nn040000_e1d2031bdfea_000000000000_0000000000001
ge11nn07enus_485a5ce6f0f0_000000000000_0000000000001
ge11cn07enus_485a5ce6f0f0_ca978112ca1b_c22fea5d74281

TCP SYN (p0f)

fingerprintco-occurrences
4:120+8:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:05
4:111+17:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:02
4:118+10:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:02
4:113+15:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:01
4:114+14:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:01
4:115+13:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:01
6:44+20:0:1440:mss*45,8:mss,nop,ws,nop,nop,sok:ecn,flow:01
6:46+18:0:1440:mss*45,8:mss,nop,ws,nop,nop,sok:ecn,flow:01
4:113+15:0:1240:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:01

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-1-3-1-1-4_1460_89
64800_2-1-3-1-1-4_1440_82
64240_2-1-3-1-1-4_1240_81

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.367
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.363
Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)2
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.361
Mozilla/5.0 (Windows NT 6.3; WOW64; rv:40.0) Gecko/20100101 Firefox/40.01
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36 Edge/92.0.902.671

Country

fingerprintco-occurrences
NL · Netherlands6
DE · Germany3
US · United States2
FR · France2
JP · Japan1
SE · Sweden1

Network (ASN)

fingerprintco-occurrences
AS197170 · TechTies Inc.5
AS20473 · The Constant Company, LLC3
AS16276 · OVH SAS2
AS8560 · IONOS SE2
AS49981 · WorldStream B.V.1
AS203861 · Miteflux Technologies Ltd1
AS205397 · 69HOST LLC1

TLS supported groups

fingerprintco-occurrences
001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28, rust-reqwest 0.11.27, powershell 7.6.8, +1 more.The fingerprint page shows the full measured match list. More on the catalog.2