t13d030900_55b375c5d22e_76485b94927e
Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
What this fingerprint encodes
JA4_a
t13d030900
handshake shape, human-readable
JA4_b
55b375c5d22e
truncated hash of the cipher list
JA4_c
76485b94927e
truncated hash of extensions + signature algorithms
- Transport
- TCP
- TLS version
- TLS 1.3
- Server name
- server name sent
- Cipher suites offered
- 3
- Extensions offered
- 9
- ALPN
- none offered
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_256_GCM_SHA384 -
TLS_AES_128_GCM_SHA256 -
TLS_CHACHA20_POLY1305_SHA256
Extensions 9
-
server_name -
status_request -
supported_groups -
ec_point_formats -
signature_algorithms -
signed_certificate_timestamp -
supported_versions -
psk_key_exchange_modes -
key_share
Named groups 1
-
514 (0x0202)
Point formats 1
-
uncompressed
Raw JA3 string
771,4866-4865-4867,0-5-10-11-13-18-43-45-51,514,0Seen in live traffic
- Connections
- 102
- First seen
- 2026-10-11 18:20 UTC
- Last seen
- 2026-10-11 18:24 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.