TLS ClientHello (JA4)

t13d1712h1_ab0a1bf427ad_882d495ac381

first seen 2026-06-30 11:03 · last seen 2026-10-31 09:40 · JSON

Last 7 days (11 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 count17
Extension count12
ALPNh1
Ciphers0067, 006b, 009e, 009f, 1301, 1302, 1303, c023, c024, c027, c028, c02b, c02c, c02f, c030, cca8, cca9
Extensions000a, 000b, 000d, 0016, 0017, 002b, 002d, 0031, 0033, ff01
Signature algorithms0905, 0906, 0904, 0403, 0503, 0603, 0807, 0808, 081a, 081b, 081c, 0809, 080a, 080b, 0804, 0805, 0806, 0401, 0501, 0601, 0303, 0301, 0302, 0402, 0502, 0602
JA4_rt13d1712h1_0067,006b,009e,009f,1301,1302,1303,c023,c024,c027,c028,c02b,c02c,c02f,c030,cca8,cca9_000a,000b,000d,0016,0017,002b,002d,0031,0033,ff01_0905,0906,0904,0403,0503,0603,0807,0808,081a,081b,081c,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0301,0302,0402,0502,0602
JA4_o (sample)t13d1712h1_fd0eb050439a_ef7e3bf95d98
JA4_ro (sample)t13d1712h1_1302,1303,1301,c02c,c030,c02b,c02f,cca9,cca8,c024,c028,c023,c027,009f,009e,006b,0067_ff01,0000,000b,000a,0010,0016,0017,0031,000d,002b,002d,0033_0905,0906,0904,0403,0503,0603,0807,0808,081a,081b,081c,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0301,0302,0402,0502,0602

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
ge11nn050000_b223a0ebb0b5_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: python-requests 2.34.2, python-requests 2.33.1, python-requests 2.32.3.The fingerprint page shows the full measured match list. More on the catalog.51
ge11nn06enus_fb4afd1f380a_000000000000_00000000000010
ge11nn16enus_ec94e3fa46ec_000000000000_0000000000008
he11nn06enus_fb4afd1f380a_000000000000_0000000000007
he11nn050000_b223a0ebb0b5_000000000000_0000000000005
ge11nn07enus_6f5b1826d533_000000000000_0000000000002
ge11nr15enus_21d8bfafe465_000000000000_0000000000002
ge11nn08engb_307da189c7d4_000000000000_0000000000002
ge11nr16enus_5a050224e10c_000000000000_0000000000002
ge11nn07enus_6fa751efc291_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
6:52+12:0:1440:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:flow:05
4:120+8:0:1460:62720,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:05
6:56+8:0:1440:mss*30,10:mss,sok,ts,nop,ws:flow:04
6:53+11:0:1440:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:flow:04
6:55+9:0:1440:mss*30,10:mss,sok,ts,nop,ws:flow:04
4:113+15:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:03
4:55+9:0:1420:mss*46,10:mss,sok,ts,nop,ws:df,id+:03
4:49+15:0:1460:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df,ecn:03
4:56+8:0:1460:65535,9:mss,sok,ts,nop,ws:df,id+:03
4:51+13:0:1460:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df:03

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-1-3-1-1-4_1460_815
65535_2-1-3-1-1-8-4-0-0_1440_612
62720_2-1-3-1-1-4_1460_811
65535_2-4-8-1-3_1460_98
65535_2-1-3-1-1-8-4-0-0_1460_68
43200_2-4-8-1-3_1440_108
65535_2-1-3-1-1-4_1440_85
64240_2-4-8-1-3_1460_74
64240_2-4-8-1-3_1460_104
65535_2-1-3-1-1-4_1460_83

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.3617
Mozilla/5.09
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.368
Mozilla/5.0 (compatible; SecurityScanner/1.0)6
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.365
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.365
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.364
python-requests/2.34.24
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.363
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124 Safari/537.363

Country

fingerprintco-occurrences
US · United States39
SG · Singapore20
NL · Netherlands4
IN · India4
JP · Japan3
TH · Thailand3
MY · Malaysia3
TR · Turkey3
IT · Italy3
MA · Morocco3

Network (ASN)

fingerprintco-occurrences
AS7922 · Comcast Cable Communications, LLC14
AS31898 · Oracle Corporation11
AS20473 · The Constant Company, LLC8
AS8075 · Microsoft Corporation6
AS219502 · Storm Industries LLC6
AS14061 · DigitalOcean, LLC5
AS16509 · Amazon.com, Inc.4
AS206092 · F.N.S. HOLDINGS LIMITED4
AS396982 · Google LLC3
AS136787 · PacketHub S.A.3

TLS supported groups

fingerprintco-occurrences
11ec,001d,0017,001e,0018,0019,0100,0101 Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 24.22.1, python-httpx 0.28.1, python-requests 2.34.2, +2 more.The fingerprint page shows the full measured match list. More on the catalog.15