JA4 t12d160700_94a94896fc8a_f28add8e7af0

t12d160700_94a94896fc8a_f28add8e7af0

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

16

Extensions offered

7

ALPN

none offered

Same tool, different options

These 6 other fingerprints share this one's JA4_c — the extension and signature-algorithm hash. A client that keeps its extension set constant while varying its cipher list produces exactly this pattern, which is what a scanner iterating cipher suites looks like. A JA3 cannot show you this: its single MD5 collapses ciphers and extensions together, so every variation looks like an unrelated client.

• t12d210700_76e208dd3e22_f28add8e7af0
• t12d280700_bbd4f008d9b2_f28add8e7af0
• t12i080600_0df93f53a2f9_f28add8e7af0
• t12i210600_76e208dd3e22_f28add8e7af0
• t12i280600_bbd4f008d9b2_f28add8e7af0
• t12d180700_4b22cbed5bed_f28add8e7af0

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 16

• TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
• TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
• TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
• TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
• TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
• TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
• TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
• TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
• TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
• TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
• TLS_RSA_WITH_AES_256_GCM_SHA384
• TLS_RSA_WITH_AES_128_GCM_SHA256
• TLS_RSA_WITH_AES_256_CBC_SHA256
• TLS_RSA_WITH_AES_128_CBC_SHA256
• 64 (0x0040)
• 106 (0x006a)

Extensions 7

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

Named groups 3

• x25519
• secp256r1
• secp384r1

Point formats 1

• uncompressed

771,49200-49199-49196-49195-49188-49187-159-158-49192-49191-157-156-61-60-64-106,0-10-11-13-35-23-65281,29-23-24,0

Seen in live traffic

Connections

12

First seen

2026-08-26 21:20 UTC

Last seen

2026-10-18 03:18 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.