t12d1909h1_c44c14debd90_aa37047d8074
Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
What this fingerprint encodes
JA4_a
t12d1909h1
handshake shape, human-readable
JA4_b
c44c14debd90
truncated hash of the cipher list
JA4_c
aa37047d8074
truncated hash of extensions + signature algorithms
- Transport
- TCP
- TLS version
- TLS 1.2
- Server name
- server name sent
- Cipher suites offered
- 19
- Extensions offered
- 9
- ALPN
- h1
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 19
-
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 -
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 -
TLS_RSA_WITH_AES_128_GCM_SHA256 -
TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 -
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 -
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 -
TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 -
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 -
TLS_RSA_WITH_AES_256_GCM_SHA384 -
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 -
TLS_RSA_WITH_AES_128_CBC_SHA256 -
TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA -
TLS_ECDHE_RSA_WITH_RC4_128_SHA -
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA -
TLS_RSA_WITH_AES_128_CBC_SHA -
TLS_ECDHE_ECDSA_WITH_RC4_128_SHA -
TLS_RSA_WITH_3DES_EDE_CBC_SHA -
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA -
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
Extensions 9
-
application_layer_protocol_negotiation -
extended_master_secret -
supported_groups -
status_request -
session_ticket -
server_name -
renegotiation_info -
ec_point_formats -
signature_algorithms
Named groups 3
-
secp256r1 -
secp384r1 -
secp521r1
Point formats 1
-
uncompressed
Raw JA3 string
771,49199-49187-156-52393-49200-52392-49196-49191-157-49195-60-49170-49169-49172-47-49159-10-49171-49161,16-23-10-5-35-0-65281-11-13,23-24-25,0Seen in live traffic
- Connections
- 1
- First seen
- 2026-10-12 15:19 UTC
- Last seen
- 2026-10-12 15:19 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.