JA4 Fingerprint Directory

t12d190600_826a7383a64d_66cfc59077e0

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

19

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 19

• TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
• TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
• TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
• TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
• TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
• TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
• TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
• TLS_ECDHE_ECDSA_WITH_RC4_128_SHA
• TLS_ECDHE_RSA_WITH_RC4_128_SHA
• TLS_DHE_RSA_WITH_AES_128_CBC_SHA
• 50 (0x0032)
• TLS_DHE_RSA_WITH_AES_256_CBC_SHA
• TLS_RSA_WITH_AES_128_GCM_SHA256
• TLS_RSA_WITH_AES_128_CBC_SHA
• TLS_RSA_WITH_AES_256_CBC_SHA
• TLS_RSA_WITH_3DES_EDE_CBC_SHA
• TLS_RSA_WITH_RC4_128_SHA
• TLS_RSA_WITH_RC4_128_MD5
• TLS_EMPTY_RENEGOTIATION_INFO_SCSV

Extensions 6

• server_name
• ec_point_formats
• supported_groups
• session_ticket
• signature_algorithms
• heartbeat

Named groups 25

• 14 (0x000e)
• 13 (0x000d)
• secp521r1
• 11 (0x000b)
• 12 (0x000c)
• secp384r1
• 9 (0x0009)
• 10 (0x000a)
• 22 (0x0016)
• secp256r1
• 8 (0x0008)
• 6 (0x0006)
• 7 (0x0007)
• 20 (0x0014)
• 21 (0x0015)
• 4 (0x0004)
• 5 (0x0005)
• 18 (0x0012)
• 19 (0x0013)
• 1 (0x0001)
• 2 (0x0002)
• 3 (0x0003)
• 15 (0x000f)
• 16 (0x0010)
• 17 (0x0011)

Point formats 3

• uncompressed
• ansiX962_compressed_prime
• ansiX962_compressed_char2

771,49195-49199-158-49162-49161-49171-49172-49159-49169-51-50-57-156-47-53-10-5-4-255,0-11-10-35-13-15,14-13-25-11-12-24-9-10-22-23-8-6-7-20-21-4-5-18-19-1-2-3-15-16-17,0-1-2

Seen in live traffic

Connections

3

First seen

2026-08-23 12:30 UTC

Last seen

2026-08-23 12:31 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.