JA4 Fingerprint Directory

t13d490700_bd868743f55c_566b5f938b58

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

49

Extensions offered

7

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.

• t13d450700_d524c25c267f_566b5f938b58

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 49

• TLS_AES_128_GCM_SHA256
• TLS_AES_256_GCM_SHA384
• TLS_CHACHA20_POLY1305_SHA256
• TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
• TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
• TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256
• TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
• TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
• TLS_RSA_WITH_AES_256_GCM_SHA384
• 49198 (0xc02e)
• 49202 (0xc032)
• TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
• TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256
• 163 (0x00a3)
• TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
• TLS_RSA_WITH_AES_128_GCM_SHA256
• 49197 (0xc02d)
• 49201 (0xc031)
• TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
• 162 (0x00a2)
• TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
• TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
• TLS_RSA_WITH_AES_256_CBC_SHA256
• 49190 (0xc026)
• 49194 (0xc02a)
• TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
• 106 (0x006a)
• TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
• TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
• TLS_RSA_WITH_AES_256_CBC_SHA
• 49157 (0xc005)
• 49167 (0xc00f)
• TLS_DHE_RSA_WITH_AES_256_CBC_SHA
• 56 (0x0038)
• TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
• TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
• TLS_RSA_WITH_AES_128_CBC_SHA256
• 49189 (0xc025)
• 49193 (0xc029)
• TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
• 64 (0x0040)
• TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
• TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
• TLS_RSA_WITH_AES_128_CBC_SHA
• 49156 (0xc004)
• 49166 (0xc00e)
• TLS_DHE_RSA_WITH_AES_128_CBC_SHA
• 50 (0x0032)
• TLS_EMPTY_RENEGOTIATION_INFO_SCSV

Extensions 7

• server_name
• status_request
• supported_groups
• ec_point_formats
• signature_algorithms
• supported_versions
• key_share

Named groups 15

• secp256r1
• secp384r1
• secp521r1
• 9 (0x0009)
• 10 (0x000a)
• 11 (0x000b)
• 12 (0x000c)
• 13 (0x000d)
• 14 (0x000e)
• 22 (0x0016)
• ffdhe2048
• ffdhe3072
• ffdhe4096
• 259 (0x0103)
• 260 (0x0104)

Point formats 1

• uncompressed

771,4865-4866-4867-49196-49195-52393-49200-52392-157-49198-49202-159-52394-163-49199-156-49197-49201-158-162-49188-49192-61-49190-49194-107-106-49162-49172-53-49157-49167-57-56-49187-49191-60-49189-49193-103-64-49161-49171-47-49156-49166-51-50-255,0-5-10-11-13-43-51,23-24-25-9-10-11-12-13-14-22-256-257-258-259-260,0

Seen in live traffic

Connections

1

First seen

2026-08-23 18:31 UTC

Last seen

2026-08-23 18:31 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.