TLS ClientHello (JA4)

t13d311200_1d947a95fc68_7e1102d2036b

first seen 2026-06-30 00:03 · last seen 2026-09-12 06:21 · JSON

Last 7 days (1 observations)

Distinct clients per day (last 30 days, peak 1/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 count31
Extension count12
ALPN00
Ciphers0032, 0033, 0038, 0039, 0040, 0067, 006a, 006b, 009e, 009f, 00a2, 00a3, 00ff, 1301, 1302, 1303, c009, c00a, c013, c014, c023, c024, c027, c028, c02b, c02c, c02f, c030, cca8, cca9, ccaa
Extensions0005, 000a, 000b, 000d, 0011, 0017, 0023, 002b, 002d, 0032, 0033
Signature algorithms0403, 0503, 0603, 0807, 0808, 0804, 0805, 0806, 0809, 080a, 080b, 0401, 0501, 0601, 0402, 0303, 0301, 0302
JA4_rt13d311200_0032,0033,0038,0039,0040,0067,006a,006b,009e,009f,00a2,00a3,00ff,1301,1302,1303,c009,c00a,c013,c014,c023,c024,c027,c028,c02b,c02c,c02f,c030,cca8,cca9,ccaa_0005,000a,000b,000d,0011,0017,0023,002b,002d,0032,0033_0403,0503,0603,0807,0808,0804,0805,0806,0809,080a,080b,0401,0501,0601,0402,0303,0301,0302
JA4_o (sample)t13d311200_cdf1781c2960_be214af1adef
JA4_ro (sample)t13d311200_1302,1301,1303,c02c,c02b,cca9,c030,cca8,c02f,009f,ccaa,00a3,009e,00a2,c024,c028,c023,c027,006b,006a,0067,0040,c00a,c014,c009,c013,0039,0038,0033,0032,00ff_0000,0005,000a,000b,0011,0017,0023,000d,002b,002d,0032,0033_0403,0503,0603,0807,0808,0804,0805,0806,0809,080a,080b,0401,0501,0601,0402,0303,0301,0302

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
ge10nr040000_1b2a64d23beb_000000000000_00000000000012
ge10nn040000_1b2a64d23beb_000000000000_0000000000001
ge11nn06enus_829a35c9de3b_000000000000_0000000000001
ge11nn040000_5192a00d9159_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: java-urlconnection 1.8.0_492.The fingerprint page shows the full measured match list. More on the catalog.1
he11nn09enus_d49d79236001_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:54+10:0:1436:mss*45,7:mss,sok,ts,nop,ws:df,id+:012
4:42+22:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01
4:47+17:0:1460:mss*29,9:mss,sok,ts,nop,ws:df,id+:01
4:54+10:0:1436:mss*45,7:mss,sok,ts,nop,ws:df:01
4:116+12:0:1460:8192,9:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
64620_2-4-8-1-3_1436_713
64240_2-4-8-1-3_1460_71
42340_2-4-8-1-3_1460_91
8192_2-4-8-1-3_1460_91

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (iPhone; CPU iPhone OS 18_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.4 Mobile/15E148 Safari/604.113
Protopage/3.0 (http://www.protopage.com)1
Java/21.0.111
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36 (compatible; HubSpot DataHub; +https://www.hubspot.com)1

Country

fingerprintco-occurrences
DE · Germany14
US · United States1
CA · Canada1

Network (ASN)

fingerprintco-occurrences
AS3320 · Deutsche Telekom AG13
AS24940 · Hetzner Online GmbH1
AS14618 · Amazon.com, Inc.1
AS16276 · OVH SAS1