JA4 t12d060400_272d6f91cd02_3549fbaf615c

t12d060400_272d6f91cd02_3549fbaf615c

Shares its JA4_c (3549fbaf615c) with 6 fingerprints classified as scanner, and nothing else in that family disagrees — the same tool under different cipher options. Inferred from the family, not observed directly.

What this fingerprint encodes

Transport

TCP

TLS version

TLS 1.2

Server name

server name sent

Cipher suites offered

6

Extensions offered

4

ALPN

none offered

Same tool, different options

These 12 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.

• t12d640400_13a2a23d501b_3549fbaf615c
• t12d640400_67f0ca237a44_3549fbaf615c
• t12d640400_a3acda31d846_3549fbaf615c
• t12d640400_e31a90cd0803_3549fbaf615c
• t12d640400_e7b476f9520b_3549fbaf615c
• t12d640400_f559eb9565fd_3549fbaf615c
• t12d630400_305e7cc661dc_3549fbaf615c
• t12d630400_4607ee80f03a_3549fbaf615c
• t12d630400_6ea97102b799_3549fbaf615c
• t12d630400_a819cc8c6927_3549fbaf615c
• t12d630400_c47ce3b2bf1f_3549fbaf615c
• t12d630400_f4a33ce78bd4_3549fbaf615c

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 6

• 49179 (0xc01b)
• 49182 (0xc01e)
• 49185 (0xc021)
• 49178 (0xc01a)
• 49181 (0xc01d)
• 49184 (0xc020)

Extensions 4

• supported_groups
• ec_point_formats
• server_name
• signature_algorithms

Named groups 6

• secp256r1
• secp384r1
• secp521r1
• x25519
• ffdhe2048
• SecP256r1MLKEM768

Point formats 1

• uncompressed

771,49179-49182-49185-49178-49181-49184,10-11-0-13,23-24-25-29-256-4588,0

Seen in live traffic

Connections

1

First seen

2026-08-27 08:59 UTC

Last seen

2026-08-27 08:59 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.