JA4 t12d100600_75366a718a82_e4ef29032766

t12d100600_75366a718a82_e4ef29032766

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

10

Extensions offered

6

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 10

• TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
• TLS_RSA_WITH_AES_256_CBC_SHA
• TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
• TLS_RSA_WITH_AES_128_CBC_SHA
• TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
• TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
• TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
• TLS_RSA_WITH_AES_256_GCM_SHA384
• TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
• TLS_RSA_WITH_AES_128_GCM_SHA256

Extensions 6

• supported_groups
• ec_point_formats
• signature_algorithms
• extended_master_secret
• server_name
• renegotiation_info

Named groups 10

• secp256r1
• secp384r1
• secp521r1
• 9 (0x0009)
• 10 (0x000a)
• 11 (0x000b)
• 12 (0x000c)
• 13 (0x000d)
• 14 (0x000e)
• 22 (0x0016)

Point formats 1

• uncompressed

771,49172-53-49171-47-49196-49195-49200-157-49199-156,10-11-13-23-0-65281,23-24-25-9-10-11-12-13-14-22,0

Seen in live traffic

Connections

4

First seen

2026-08-30 10:06 UTC

Last seen

2026-08-30 10:39 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.