JA4 t13d121100_2fc95311a792_408777b7afc8

t13d121100_2fc95311a792_408777b7afc8

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 1.3

Server name

server name sent

Cipher suites offered

12

Extensions offered

11

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 12

• 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
• TLS_RSA_WITH_AES_128_CBC_SHA
• TLS_RSA_WITH_AES_256_CBC_SHA
• TLS_RSA_WITH_3DES_EDE_CBC_SHA
• TLS_AES_128_GCM_SHA256
• TLS_AES_256_GCM_SHA384
• TLS_CHACHA20_POLY1305_SHA256

Extensions 11

• server_name
• ec_point_formats
• renegotiation_info
• extended_master_secret
• signed_certificate_timestamp
• status_request
• supported_groups
• signature_algorithms
• signature_algorithms_cert
• supported_versions
• key_share

Named groups 7

• SecP256r1MLKEM768
• X25519MLKEM768
• 4589 (0x11ed)
• x25519
• secp256r1
• secp384r1
• secp521r1

Point formats 1

• uncompressed

771,49195-49199-49196-49200-49171-49172-47-53-10-4865-4866-4867,0-11-65281-23-18-5-10-13-50-43-51,4588-4587-4589-29-23-24-25,0

Seen in live traffic

Connections

1

First seen

2026-09-07 13:46 UTC

Last seen

2026-09-07 13:46 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.