JA4 Fingerprint Directory

t10d090600_c491f621fb4c_80d8baa1f8cb

Legacy TLS client — inferred from the JA4 handshake shape.

What this fingerprint encodes

Transport

TCP

TLS version

TLS 1.0

Server name

server name sent

Cipher suites offered

9

Extensions offered

6

ALPN

none offered

Same tool, different options

These 1 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.

• t11d090600_c491f621fb4c_80d8baa1f8cb

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 1.0

Cipher suites 9

• TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
• TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
• TLS_DHE_RSA_WITH_AES_256_CBC_SHA
• TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
• TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
• TLS_DHE_RSA_WITH_AES_128_CBC_SHA
• TLS_RSA_WITH_AES_256_CBC_SHA
• TLS_RSA_WITH_AES_128_CBC_SHA
• TLS_EMPTY_RENEGOTIATION_INFO_SCSV

Extensions 6

• server_name
• ec_point_formats
• supported_groups
• session_ticket
• encrypt_then_mac
• extended_master_secret

Named groups 5

• x25519
• secp256r1
• x448
• secp521r1
• secp384r1

Point formats 3

• uncompressed
• ansiX962_compressed_prime
• ansiX962_compressed_char2

769,49162-49172-57-49161-49171-51-53-47-255,0-11-10-35-22-23,29-23-30-25-24,0-1-2

Seen in live traffic

Connections

2

First seen

2026-08-25 22:42 UTC

Last seen

2026-08-25 23:43 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.