TLS ClientHello (JA4)

t13d101100_01be160bb49b_36bf25f296df

first seen 2026-06-29 23:31 · last seen 2026-11-01 00:10 · JSON

Last 7 days (2 observations)

Distinct clients per day (last 30 days, peak 12/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 count10
Extension count11
ALPN00
Ciphers1301, 1302, 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_rt13d101100_1301,1302,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)t13d101100_8d8759d5f363_05ede352cda5
JA4_ro (sample)t13d101100_1302,1301,c02c,c02b,c030,c02f,c024,c023,c028,c027_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
he11nn030000_b0d6a43aa599_000000000000_00000000000012
he11nn07en00_806ad52065dd_000000000000_00000000000010
ge11nn07en00_806ad52065dd_000000000000_0000000000008
ge11nn07de00_806ad52065dd_000000000000_0000000000002
ge11nn12enus_2fc2d790e0fd_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:104+24:0:1340:mtu*47,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:05
4:108+20:0:1340:mtu*47,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:03
4:103+25:0:1440:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:03
4:109+19:0:1440:65535,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:02
4:113+15:0:1440:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:02
4:108+20:0:1440:65535,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:02
4:103+25:0:1340:mtu*47,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:02
4:104+24:0:1440:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:02
4:106+22:0:1340:mtu*47,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:02
4:110+18:0:1440:65535,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:01

TCP SYN (JA4T)

fingerprintco-occurrences
64860_2-1-3-1-1-4_1340_815
64240_2-1-3-1-1-4_1440_812
65535_2-1-3-1-1-4_1440_86

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 6.1; WOW64) SkypeUriPreview Preview/0.5 skype-url-preview@microsoft.com20
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.74 Safari/537.36 Edg/79.0.309.4312
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36 Edg/149.0.0.01

Country

fingerprintco-occurrences
US · United States20
IE · Ireland7
FR · France4
NL · Netherlands2

Network (ASN)

fingerprintco-occurrences
AS8075 · Microsoft Corporation28
AS8070 · Microsoft Corporation5

TLS supported groups

fingerprintco-occurrences
0018,0017 Match?Exact match in Thumbprint's published controlled catalog captures: powershell 7.6.7, powershell 5.1.26100.33648, curl 8.21.0.The fingerprint page shows the full measured match list. More on the catalog.2