unrecognised fingerprint
t13d1311h2_b23dd12247a7_605a17141b99
One JA3 across every connection — a deterministic stack, the shape of a library or command-line client, with no catalogue name yet.
- JA4
- JA4_r
- JA3
- 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.
- 00x1302TLS_AES_256_GCM_SHA384
- 10x1301TLS_AES_128_GCM_SHA256
- 20xc02cTLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
- 30xc02bTLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
- 40xc030TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
- 50xc02fTLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
- 60xc014TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
- 70xc013TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
- 80x009dTLS_RSA_WITH_AES_256_GCM_SHA384
- 90x009cTLS_RSA_WITH_AES_128_GCM_SHA256
- 100x0035TLS_RSA_WITH_AES_256_CBC_SHA
- 110x002fTLS_RSA_WITH_AES_128_CBC_SHA
- 120x000aunknown (0x000a)
- 00x0000server_name (SNI)
- 10x000asupported_groups
- 20x000bec_point_formats
- 30x000dsignature_algorithms
- 40x0010application_layer_protocol_negotiation (ALPN)
- 50x0017extended_master_secret
- 60x002bsupported_versions
- 70x002dpsk_key_exchange_modes
- 80x0032unknown (0x0032)
- 90x0033key_share
- 100xff01renegotiation_info
Stored sorted — under one JA4 the wire order varies by construction, so no single order is “the” order.
- 00x0017secp256r1 (P-256)
- 10x0018secp384r1 (P-384)
- 20x0019secp521r1 (P-521)
- 30x0100ffdhe2048
- 40x0101ffdhe3072
- 50x0102ffdhe4096
- 60x0103ffdhe6144
- 70x0104ffdhe8192
- 00x0403ecdsa_secp256r1_sha256
- 10x0503ecdsa_secp384r1_sha384
- 20x0603ecdsa_secp521r1_sha512
- 30x0804rsa_pss_rsae_sha256
- 40x0805rsa_pss_rsae_sha384
- 50x0806rsa_pss_rsae_sha512
- 60x0809rsa_pss_pss_sha256
- 70x080arsa_pss_pss_sha384
- 80x080brsa_pss_pss_sha512
- 90x0401rsa_pkcs1_sha256
- 100x0501rsa_pkcs1_sha384
- 110x0601rsa_pkcs1_sha512
- 120x0402rsa_pkcs1_sha384
- 130x0303rsa_pkcs1_sha512 (legacy)
- 140x0301rsa_pkcs1_sha256 (legacy)
- 150x0302rsa_pkcs1_sha384 (legacy)
- 160x0203ecdsa_sha1
- 170x0201rsa_pkcs1_sha1
- 180x0202unknown (0x0202)
Reach — domains contacted
- 59%
- 31%
- 6.3%
- 3.1%
Top 4 of 4. Share is the fraction of this fingerprint’s observations reaching each name.