q13d0313h3_55b375c5d22e_bc972749234a
Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
What this fingerprint encodes
JA4_a
q13d0313h3
handshake shape, human-readable
JA4_b
55b375c5d22e
truncated hash of the cipher list
JA4_c
bc972749234a
truncated hash of extensions + signature algorithms
- Transport
- QUIC
- TLS version
- TLS 1.3
- Server name
- server name sent
- Cipher suites offered
- 3
- Extensions offered
- 13
- ALPN
- h3
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 3
-
TLS_AES_128_GCM_SHA256 -
TLS_AES_256_GCM_SHA384 -
TLS_CHACHA20_POLY1305_SHA256
Extensions 13
-
encrypted_client_hello -
server_name -
psk_key_exchange_modes -
application_layer_protocol_negotiation -
4832 (0x12e0) -
compress_certificate -
supported_groups -
51764 (0xca34) -
signature_algorithms -
key_share -
quic_transport_parameters -
17613 (0x44cd) -
supported_versions
Named groups 4
-
SecP256r1MLKEM768 -
x25519 -
secp256r1 -
secp384r1
Raw JA3 string
771,4865-4866-4867,65037-0-45-16-4832-27-10-51764-13-51-57-17613-43,4588-29-23-24,Seen in live traffic
- Connections
- 1
- First seen
- 2026-08-25 23:20 UTC
- Last seen
- 2026-08-25 23:20 UTC
- Transport
- QUIC
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.