JA4 t12d0608h2_2be37fd24b6f_de864c534845

t12d0608h2_2be37fd24b6f_de864c534845

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

What this fingerprint encodes

Transport

TCP

TLS version

TLS 1.2

Server name

server name sent

Cipher suites offered

6

Extensions offered

8

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 6

• TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
• TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
• TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
• TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
• TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
• TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA

Extensions 8

• application_layer_protocol_negotiation
• signature_algorithms
• supported_groups
• status_request
• renegotiation_info
• ec_point_formats
• session_ticket
• server_name

Named groups 2

• secp256r1
• secp384r1

Point formats 1

• uncompressed

771,49195-49199-49196-49200-49171-49172,16-13-10-5-65281-11-35-0,23-24,0

Seen in live traffic

Connections

4

First seen

2026-08-27 18:36 UTC

Last seen

2026-08-27 18:36 UTC

Transport

TCP

JA3 hashes absorbed

4

The same client, 4 different JA3s

This one JA4 covers 4 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 4 unrelated clients. JA4 sorts those lists before hashing, which is why all of it lands here instead.

• fc3bbcde8e81a01df2387e6a0d9e17ee
• b8f58a74d41a11948d94f709e33369d0
• 47294bde1c9b12fa1626aa6009238d1e
• eb54a2b9230a616d15d2a552f7769441

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.