JA4 t12d370400_3fce34ec6c8f_5d941312bb9a

t12d370400_3fce34ec6c8f_5d941312bb9a

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

37

Extensions offered

4

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 37

• TLS_EMPTY_RENEGOTIATION_INFO_SCSV
• TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
• TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
• TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
• TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
• 49198 (0xc02e)
• 49202 (0xc032)
• 49190 (0xc026)
• 49194 (0xc02a)
• TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
• 163 (0x00a3)
• TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
• 106 (0x006a)
• TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
• TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
• TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
• TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
• 49197 (0xc02d)
• 49201 (0xc031)
• 49189 (0xc025)
• 49193 (0xc029)
• TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
• 162 (0x00a2)
• TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
• 64 (0x0040)
• TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
• TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
• TLS_DHE_RSA_WITH_AES_256_CBC_SHA
• 56 (0x0038)
• 49157 (0xc005)
• 49167 (0xc00f)
• TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
• TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
• TLS_DHE_RSA_WITH_AES_128_CBC_SHA
• 50 (0x0032)
• 49156 (0xc004)
• 49166 (0xc00e)

Extensions 4

• server_name
• signature_algorithms
• supported_groups
• ec_point_formats

Named groups 28

• 14 (0x000e)
• 13 (0x000d)
• secp521r1
• 28 (0x001c)
• 11 (0x000b)
• 12 (0x000c)
• 27 (0x001b)
• secp384r1
• 9 (0x0009)
• 10 (0x000a)
• 26 (0x001a)
• 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 1

• uncompressed

771,255-49196-49200-49188-49192-49198-49202-49190-49194-159-163-107-106-49195-49199-49187-49191-49197-49201-49189-49193-158-162-103-64-49162-49172-57-56-49157-49167-49161-49171-51-50-49156-49166,0-13-10-11,14-13-25-28-11-12-27-24-9-10-26-22-23-8-6-7-20-21-4-5-18-19-1-2-3-15-16-17,0

Seen in live traffic

Connections

4

First seen

2026-08-26 02:15 UTC

Last seen

2026-08-26 02:15 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.