t12d1809h2_ca1ff0992a9f_a9efee95875b
Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
What this fingerprint encodes
JA4_a
t12d1809h2
handshake shape, human-readable
JA4_b
ca1ff0992a9f
truncated hash of the cipher list
JA4_c
a9efee95875b
truncated hash of extensions + signature algorithms
- Transport
- TCP
- TLS version
- TLS 1.2
- Server name
- server name sent
- Cipher suites offered
- 18
- Extensions offered
- 9
- ALPN
- h2
The hello it was computed from
Recovered because the proxy now stores the pre-hash JA3 string alongside the digest. Every number below came out of this client's ClientHello; anything we cannot name in the IANA registry is shown as its raw value rather than guessed at.
- Version
- TLS 1.2
Cipher suites 18
-
TLS_RSA_WITH_AES_128_CBC_SHA256 -
TLS_RSA_WITH_AES_256_GCM_SHA384 -
TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 -
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 -
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 -
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 -
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 -
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 -
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 -
TLS_RSA_WITH_AES_128_GCM_SHA256 -
TLS_ECDHE_RSA_WITH_RC4_128_SHA -
TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA -
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA -
TLS_RSA_WITH_3DES_EDE_CBC_SHA -
TLS_RSA_WITH_AES_128_CBC_SHA -
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA -
TLS_RSA_WITH_AES_256_CBC_SHA -
TLS_RSA_WITH_RC4_128_SHA
Extensions 9
-
server_name -
renegotiation_info -
signed_certificate_timestamp -
extended_master_secret -
signature_algorithms -
application_layer_protocol_negotiation -
ec_point_formats -
session_ticket -
supported_groups
Named groups 3
-
x25519 -
secp256r1 -
secp384r1
Point formats 1
-
uncompressed
Raw JA3 string
771,60-157-52393-52392-49191-49199-49195-49200-49187-156-49169-49170-49172-10-47-49162-53-5,0-65281-18-23-13-16-11-35-10,29-23-24,0Seen in live traffic
- Connections
- 1
- First seen
- 2026-09-25 17:48 UTC
- Last seen
- 2026-09-25 17:48 UTC
- Transport
- TCP
This entry is an observation, not a policy decision. It is here because the edge saw it, not because anyone reviewed it, and it blocks nothing on its own. Only the curated tier drives classification and banning.