JA4 q13d0310h3_55b375c5d22e_6bd95d438927

q13d0310h3_55b375c5d22e_6bd95d438927

Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.

What this fingerprint encodes

Transport

QUIC

TLS version

TLS 1.3

Server name

server name sent

Cipher suites offered

3

Extensions offered

10

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_256_GCM_SHA384
• TLS_AES_128_GCM_SHA256
• TLS_CHACHA20_POLY1305_SHA256

Extensions 10

• quic_transport_parameters
• server_name
• status_request
• supported_groups
• application_layer_protocol_negotiation
• supported_versions
• psk_key_exchange_modes
• key_share
• signature_algorithms
• encrypted_client_hello

Named groups 4

• SecP256r1MLKEM768
• x25519
• secp256r1
• secp384r1

771,4866-4865-4867,57-0-5-10-16-43-45-51-13-65037,4588-29-23-24,

Seen in live traffic

Connections

7

First seen

2026-10-15 01:51 UTC

Last seen

2026-10-15 03:52 UTC

Transport

QUIC

JA3 hashes absorbed

7

The same client, 7 different JA3s

This one JA4 covers 7 distinct JA3 hashes. A JA3 hashes the cipher and extension lists in the order they arrived, so a client that shuffles them — which Chrome and its derivatives do on purpose — produces a new JA3 almost every connection and fragments into what looks like 7 unrelated clients. JA4 sorts those lists before hashing, which is why all of it lands here instead.

• d0c10c90e5cbad4ef62677f53683f9c6
• 81dc2752c817a0d672d1ab4c42e14563
• fb7dda63b363c25d3a829d6e7e847bd3
• e500300c0744849c8e0c5d0adbb43276
• 46cfd85d8338fcf6b5b2303de66e7fc5
• 9cd18b56535cfcb2c3a8c61bebe2a7a6
• dfde5952199f3b8f8b2f51f3f44a3541

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.