JA4 t12d720800_1b75dbf8ecb1_bccd9a762ad0

t12d720800_1b75dbf8ecb1_bccd9a762ad0

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

72

Extensions offered

8

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 72

• TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
• TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
• TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
• TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
• TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
• 162 (0x00a2)
• 163 (0x00a3)
• TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
• TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
• TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
• TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
• TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
• TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
• TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
• TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
• TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
• TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
• TLS_DHE_RSA_WITH_AES_128_CBC_SHA
• 64 (0x0040)
• TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
• 56 (0x0038)
• TLS_DHE_RSA_WITH_AES_256_CBC_SHA
• TLS_RSA_WITH_AES_128_GCM_SHA256
• TLS_RSA_WITH_AES_256_GCM_SHA384
• TLS_DHE_RSA_WITH_AES_128_CCM
• TLS_RSA_WITH_AES_128_CCM
• TLS_ECDHE_RSA_WITH_ARIA_128_GCM_SHA256
• TLS_RSA_WITH_ARIA_128_GCM_SHA256
• 50 (0x0032)
• TLS_ECDHE_ECDSA_WITH_ARIA_128_GCM_SHA256
• TLS_DHE_RSA_WITH_ARIA_128_GCM_SHA256
• TLS_RSA_WITH_AES_128_CBC_SHA256
• TLS_RSA_WITH_AES_128_CBC_SHA
• TLS_DHE_RSA_WITH_AES_256_CCM
• TLS_RSA_WITH_AES_256_CCM
• TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384
• TLS_RSA_WITH_ARIA_256_GCM_SHA384
• 106 (0x006a)
• TLS_ECDHE_ECDSA_WITH_ARIA_256_GCM_SHA384
• TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384
• TLS_RSA_WITH_AES_256_CBC_SHA256
• TLS_RSA_WITH_AES_256_CBC_SHA
• TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256
• TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
• TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256
• 49245 (0xc05d)
• TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384
• 49239 (0xc057)
• 49235 (0xc053)
• 49244 (0xc05c)
• TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256
• 49238 (0xc056)
• 49234 (0xc052)
• TLS_ECDHE_RSA_WITH_CAMELLIA_256_CBC_SHA384
• TLS_RSA_WITH_CAMELLIA_256_GCM_SHA384
• TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256
• 195 (0x00c3)
• TLS_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256
• TLS_RSA_WITH_CAMELLIA_128_GCM_SHA256
• TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256
• 189 (0x00bd)
• TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA
• 135 (0x0087)
• TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA
• 68 (0x0044)
• 49233 (0xc051)
• 49232 (0xc050)
• TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256
• TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256
• TLS_RSA_WITH_CAMELLIA_256_CBC_SHA
• TLS_RSA_WITH_CAMELLIA_128_CBC_SHA
• TLS_EMPTY_RENEGOTIATION_INFO_SCSV

Extensions 8

• server_name
• ec_point_formats
• supported_groups
• session_ticket
• encrypt_then_mac
• extended_master_secret
• signature_algorithms
• padding

Named groups 5

• x25519
• secp256r1
• x448
• secp521r1
• secp384r1

Point formats 3

• uncompressed
• ansiX962_compressed_prime
• ansiX962_compressed_char2

771,49199-49195-49200-49196-158-162-163-159-49191-49187-49171-49161-49192-49188-49172-49162-103-51-64-107-56-57-156-157-49326-49324-49314-49310-50-49312-49308-60-47-49327-49325-49315-49311-106-49313-49309-61-53-52393-52392-52394-49245-49249-49239-49235-49244-49248-49238-49234-49267-49271-196-195-49266-49270-190-189-136-135-69-68-49233-49232-192-186-132-65-255,0-11-10-35-22-23-13-21,29-23-30-25-24,0-1-2

Seen in live traffic

Connections

1

First seen

2026-09-07 03:09 UTC

Last seen

2026-09-07 03:09 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.