unrecognised fingerprint
t13d181100_e8a523a41297_ef7df7f74e48
A few stable builds share this JA4 — not per-connection randomisation, and not yet a named client.
- JA4
- JA4_r
- JA3
- several builds share this JA4 under different JA3s — no single value is canonical.
- JA3_raw
- —
Read
Spread measures reach, not intent: it can’t tell one scraper visiting 500 domains from 500 people visiting one each. Stability is a claim about software — whether the stack is deterministic — nothing about who runs it.
Footprint
ClientHello anatomy
The underscore groups of JA4_r are the raw cipher suites · extensions · signature algorithms behind the hash.
The post-quantum key share is a structural fact about the hello, not a verdict — GREASE values are flagged the same neutral way.
- 00x1303TLS_CHACHA20_POLY1305_SHA256
- 10x1301TLS_AES_128_GCM_SHA256
- 20x1302TLS_AES_256_GCM_SHA384
- 30xcca9TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305
- 40xcca8TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305
- 50xc02bTLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
- 60xc02fTLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
- 70xc02cTLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
- 80xc030TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
- 90xc009TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
- 100xc013TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
- 110xc00aTLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
- 120xc014TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
- 130x009cTLS_RSA_WITH_AES_128_GCM_SHA256
- 140x009dTLS_RSA_WITH_AES_256_GCM_SHA384
- 150x002fTLS_RSA_WITH_AES_128_CBC_SHA
- 160x0035TLS_RSA_WITH_AES_256_CBC_SHA
- 170x000aunknown (0x000a)
- 00x0000server_name (SNI)
- 10x000asupported_groups
- 20x000bec_point_formats
- 30x000dsignature_algorithms
- 40x0015padding
- 50x0017extended_master_secret
- 60x0023session_ticket
- 70x002bsupported_versions
- 80x002dpsk_key_exchange_modes
- 90x0033key_share
- 100xff01renegotiation_info
Stored sorted — under one JA4 the wire order varies by construction, so no single order is “the” order.
- 00x001dx25519
- 10x0017secp256r1 (P-256)
- 20x0018secp384r1 (P-384)
- 00x0403ecdsa_secp256r1_sha256
- 10x0804rsa_pss_rsae_sha256
- 20x0401rsa_pkcs1_sha256
- 30x0503ecdsa_secp384r1_sha384
- 40x0805rsa_pss_rsae_sha384
- 50x0501rsa_pkcs1_sha384
- 60x0806rsa_pss_rsae_sha512
- 70x0601rsa_pkcs1_sha512
- 80x0201rsa_pkcs1_sha1
JA3 variants
2 distinct JA3 hashes collapse into this one JA4.
| # | JA3 | JA3_raw | obs | share |
|---|---|---|---|---|
| 0 | 771,4865-4866-4867-491…29-23-24,0 | 28 | 97% | |
| 1 | 771,4867-4865-4866-523…29-23-24,0 | 1 | 3.4% |
JA3 hashes preserve wire order, so a permuting client mints a new one per connection; JA4 sorts the same set, which is why they share one JA4. Every hash here belongs to this fingerprint — there is no per-JA3 page.
Reach — domains contacted
- 14%
- 10%
- 10%
- 10%
- 10%
- 6.9%
- 6.9%
- 6.9%
- 6.9%
- 3.4%
- 3.4%
- 3.4%
- 3.4%
- 3.4%
Top 14 of 14. Share is the fraction of this fingerprint’s observations reaching each name.