t12d990500_039a0bf59e5c_7562623a49ec
Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
What this fingerprint encodes
JA4_a
t12d990500
handshake shape, human-readable
JA4_b
039a0bf59e5c
truncated hash of the cipher list
JA4_c
7562623a49ec
truncated hash of extensions + signature algorithms
- Transport
- TCP
- TLS version
- TLS 1.2
- Server name
- server name sent
- Cipher suites offered
- 99
- Extensions offered
- 5
- ALPN
- none offered
Same tool, different options
These 4 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.
- t12d880500_9d74d59be4ce_7562623a49ec
- t12d990500_41a9ebd02c1f_7562623a49ec
- t12d990500_e91dfaae0f87_7562623a49ec
- t12d990500_ecf6b0aa1042_7562623a49ec
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 354
-
1 (0x0001) -
2 (0x0002) -
3 (0x0003) -
TLS_RSA_WITH_RC4_128_MD5 -
TLS_RSA_WITH_RC4_128_SHA -
6 (0x0006) -
7 (0x0007) -
8 (0x0008) -
9 (0x0009) -
TLS_RSA_WITH_3DES_EDE_CBC_SHA -
11 (0x000b) -
12 (0x000c) -
13 (0x000d) -
14 (0x000e) -
15 (0x000f) -
16 (0x0010) -
17 (0x0011) -
18 (0x0012) -
19 (0x0013) -
20 (0x0014) -
21 (0x0015) -
TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA -
23 (0x0017) -
24 (0x0018) -
25 (0x0019) -
26 (0x001a) -
27 (0x001b) -
28 (0x001c) -
29 (0x001d) -
30 (0x001e) -
31 (0x001f) -
32 (0x0020) -
33 (0x0021) -
34 (0x0022) -
35 (0x0023) -
36 (0x0024) -
37 (0x0025) -
38 (0x0026) -
39 (0x0027) -
40 (0x0028) -
41 (0x0029) -
42 (0x002a) -
43 (0x002b) -
44 (0x002c) -
45 (0x002d) -
46 (0x002e) -
TLS_RSA_WITH_AES_128_CBC_SHA -
48 (0x0030) -
49 (0x0031) -
50 (0x0032) -
TLS_DHE_RSA_WITH_AES_128_CBC_SHA -
52 (0x0034) -
TLS_RSA_WITH_AES_256_CBC_SHA -
54 (0x0036) -
55 (0x0037) -
56 (0x0038) -
TLS_DHE_RSA_WITH_AES_256_CBC_SHA -
58 (0x003a) -
59 (0x003b) -
TLS_RSA_WITH_AES_128_CBC_SHA256 -
TLS_RSA_WITH_AES_256_CBC_SHA256 -
62 (0x003e) -
63 (0x003f) -
64 (0x0040) -
TLS_RSA_WITH_CAMELLIA_128_CBC_SHA -
66 (0x0042) -
67 (0x0043) -
68 (0x0044) -
TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA -
70 (0x0046) -
96 (0x0060) -
97 (0x0061) -
98 (0x0062) -
99 (0x0063) -
100 (0x0064) -
101 (0x0065) -
102 (0x0066) -
TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 -
104 (0x0068) -
105 (0x0069) -
106 (0x006a) -
TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 -
108 (0x006c) -
109 (0x006d) -
128 (0x0080) -
129 (0x0081) -
130 (0x0082) -
131 (0x0083) -
TLS_RSA_WITH_CAMELLIA_256_CBC_SHA -
133 (0x0085) -
134 (0x0086) -
135 (0x0087) -
TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA -
137 (0x0089) -
138 (0x008a) -
139 (0x008b) -
140 (0x008c) -
141 (0x008d) -
142 (0x008e) -
143 (0x008f) -
144 (0x0090) -
145 (0x0091) -
146 (0x0092) -
147 (0x0093) -
148 (0x0094) -
149 (0x0095) -
TLS_RSA_WITH_SEED_CBC_SHA -
151 (0x0097) -
152 (0x0098) -
153 (0x0099) -
TLS_DHE_RSA_WITH_SEED_CBC_SHA -
155 (0x009b) -
TLS_RSA_WITH_AES_128_GCM_SHA256 -
TLS_RSA_WITH_AES_256_GCM_SHA384 -
TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 -
TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 -
160 (0x00a0) -
161 (0x00a1) -
162 (0x00a2) -
163 (0x00a3) -
164 (0x00a4) -
165 (0x00a5) -
166 (0x00a6) -
167 (0x00a7) -
168 (0x00a8) -
169 (0x00a9) -
170 (0x00aa) -
171 (0x00ab) -
172 (0x00ac) -
173 (0x00ad) -
174 (0x00ae) -
175 (0x00af) -
176 (0x00b0) -
177 (0x00b1) -
178 (0x00b2) -
179 (0x00b3) -
180 (0x00b4) -
181 (0x00b5) -
182 (0x00b6) -
183 (0x00b7) -
184 (0x00b8) -
185 (0x00b9) -
TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256 -
187 (0x00bb) -
188 (0x00bc) -
189 (0x00bd) -
TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256 -
191 (0x00bf) -
TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256 -
193 (0x00c1) -
194 (0x00c2) -
195 (0x00c3) -
TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256 -
197 (0x00c5) -
TLS_AES_128_GCM_SHA256 -
TLS_AES_256_GCM_SHA384 -
TLS_CHACHA20_POLY1305_SHA256 -
TLS_AES_128_CCM_SHA256 -
TLS_AES_128_CCM_8_SHA256 -
49153 (0xc001) -
49154 (0xc002) -
49155 (0xc003) -
49156 (0xc004) -
49157 (0xc005) -
49158 (0xc006) -
TLS_ECDHE_ECDSA_WITH_RC4_128_SHA -
TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA -
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA -
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA -
49163 (0xc00b) -
49164 (0xc00c) -
49165 (0xc00d) -
49166 (0xc00e) -
49167 (0xc00f) -
49168 (0xc010) -
TLS_ECDHE_RSA_WITH_RC4_128_SHA -
TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA -
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA -
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA -
49173 (0xc015) -
49174 (0xc016) -
49175 (0xc017) -
49176 (0xc018) -
49177 (0xc019) -
49178 (0xc01a) -
49179 (0xc01b) -
49180 (0xc01c) -
49181 (0xc01d) -
49182 (0xc01e) -
49183 (0xc01f) -
49184 (0xc020) -
49185 (0xc021) -
49186 (0xc022) -
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 -
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 -
49189 (0xc025) -
49190 (0xc026) -
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 -
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 -
49193 (0xc029) -
49194 (0xc02a) -
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 -
TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 -
49197 (0xc02d) -
49198 (0xc02e) -
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 -
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 -
49201 (0xc031) -
49202 (0xc032) -
49203 (0xc033) -
49204 (0xc034) -
49205 (0xc035) -
49206 (0xc036) -
49207 (0xc037) -
49208 (0xc038) -
49209 (0xc039) -
49210 (0xc03a) -
49211 (0xc03b) -
49212 (0xc03c) -
49213 (0xc03d) -
49214 (0xc03e) -
49215 (0xc03f) -
49216 (0xc040) -
49217 (0xc041) -
49218 (0xc042) -
49219 (0xc043) -
49220 (0xc044) -
49221 (0xc045) -
49222 (0xc046) -
49223 (0xc047) -
49224 (0xc048) -
49225 (0xc049) -
49226 (0xc04a) -
49227 (0xc04b) -
49228 (0xc04c) -
49229 (0xc04d) -
49230 (0xc04e) -
49231 (0xc04f) -
49232 (0xc050) -
49233 (0xc051) -
49234 (0xc052) -
49235 (0xc053) -
49236 (0xc054) -
49237 (0xc055) -
49238 (0xc056) -
49239 (0xc057) -
49240 (0xc058) -
49241 (0xc059) -
49242 (0xc05a) -
49243 (0xc05b) -
49244 (0xc05c) -
49245 (0xc05d) -
49246 (0xc05e) -
49247 (0xc05f) -
TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256 -
TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384 -
49250 (0xc062) -
49251 (0xc063) -
49252 (0xc064) -
49253 (0xc065) -
49254 (0xc066) -
49255 (0xc067) -
49256 (0xc068) -
49257 (0xc069) -
49258 (0xc06a) -
49259 (0xc06b) -
49260 (0xc06c) -
49261 (0xc06d) -
49262 (0xc06e) -
49263 (0xc06f) -
49264 (0xc070) -
49265 (0xc071) -
TLS_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256 -
TLS_ECDHE_RSA_WITH_CAMELLIA_256_CBC_SHA384 -
49268 (0xc074) -
49269 (0xc075) -
TLS_RSA_WITH_CAMELLIA_128_GCM_SHA256 -
TLS_RSA_WITH_CAMELLIA_256_GCM_SHA384 -
49272 (0xc078) -
49273 (0xc079) -
49274 (0xc07a) -
49275 (0xc07b) -
49276 (0xc07c) -
49277 (0xc07d) -
49278 (0xc07e) -
49279 (0xc07f) -
49280 (0xc080) -
49281 (0xc081) -
49282 (0xc082) -
49283 (0xc083) -
49284 (0xc084) -
49285 (0xc085) -
49286 (0xc086) -
49287 (0xc087) -
49288 (0xc088) -
49289 (0xc089) -
49290 (0xc08a) -
49291 (0xc08b) -
49292 (0xc08c) -
49293 (0xc08d) -
49294 (0xc08e) -
49295 (0xc08f) -
49296 (0xc090) -
49297 (0xc091) -
49298 (0xc092) -
49299 (0xc093) -
49300 (0xc094) -
49301 (0xc095) -
49302 (0xc096) -
49303 (0xc097) -
49304 (0xc098) -
49305 (0xc099) -
49306 (0xc09a) -
49307 (0xc09b) -
TLS_DHE_RSA_WITH_ARIA_128_GCM_SHA256 -
TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384 -
TLS_RSA_WITH_ARIA_128_GCM_SHA256 -
TLS_RSA_WITH_ARIA_256_GCM_SHA384 -
TLS_ECDHE_ECDSA_WITH_ARIA_128_GCM_SHA256 -
TLS_ECDHE_ECDSA_WITH_ARIA_256_GCM_SHA384 -
TLS_ECDHE_RSA_WITH_ARIA_128_GCM_SHA256 -
TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384 -
49316 (0xc0a4) -
49317 (0xc0a5) -
49318 (0xc0a6) -
49319 (0xc0a7) -
49320 (0xc0a8) -
49321 (0xc0a9) -
49322 (0xc0aa) -
49323 (0xc0ab) -
TLS_RSA_WITH_AES_128_CCM -
TLS_RSA_WITH_AES_256_CCM -
TLS_DHE_RSA_WITH_AES_128_CCM -
TLS_DHE_RSA_WITH_AES_256_CCM -
TLS_RSA_WITH_AES_128_CCM_8 -
TLS_RSA_WITH_AES_256_CCM_8 -
TLS_DHE_RSA_WITH_AES_128_CCM_8 -
TLS_DHE_RSA_WITH_AES_256_CCM_8 -
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 -
TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 -
TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 -
52395 (0xccab) -
52396 (0xccac) -
52397 (0xccad) -
52398 (0xccae) -
5815 (0x16b7) -
5816 (0x16b8) -
5817 (0x16b9) -
5818 (0x16ba) -
253 (0x00fd) -
65413 (0xff85) -
65415 (0xff87) -
198 (0x00c6) -
199 (0x00c7)
Extensions 5
-
ec_point_formats -
supported_groups -
server_name -
signature_algorithms -
renegotiation_info
Named groups 38
-
1 (0x0001) -
2 (0x0002) -
3 (0x0003) -
4 (0x0004) -
5 (0x0005) -
6 (0x0006) -
7 (0x0007) -
8 (0x0008) -
9 (0x0009) -
10 (0x000a) -
11 (0x000b) -
12 (0x000c) -
13 (0x000d) -
14 (0x000e) -
15 (0x000f) -
16 (0x0010) -
17 (0x0011) -
18 (0x0012) -
19 (0x0013) -
20 (0x0014) -
21 (0x0015) -
22 (0x0016) -
secp256r1 -
secp384r1 -
secp521r1 -
26 (0x001a) -
27 (0x001b) -
28 (0x001c) -
x25519 -
x448 -
41 (0x0029) -
ffdhe2048 -
ffdhe3072 -
ffdhe4096 -
259 (0x0103) -
260 (0x0104) -
65281 (0xff01) -
65282 (0xff02)
Point formats 1
-
uncompressed
Raw JA3 string
771,1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22-23-24-25-26-27-28-29-30-31-32-33-34-35-36-37-38-39-40-41-42-43-44-45-46-47-48-49-50-51-52-53-54-55-56-57-58-59-60-61-62-63-64-65-66-67-68-69-70-96-97-98-99-100-101-102-103-104-105-106-107-108-109-128-129-130-131-132-133-134-135-136-137-138-139-140-141-142-143-144-145-146-147-148-149-150-151-152-153-154-155-156-157-158-159-160-161-162-163-164-165-166-167-168-169-170-171-172-173-174-175-176-177-178-179-180-181-182-183-184-185-186-187-188-189-190-191-192-193-194-195-196-197-4865-4866-4867-4868-4869-49153-49154-49155-49156-49157-49158-49159-49160-49161-49162-49163-49164-49165-49166-49167-49168-49169-49170-49171-49172-49173-49174-49175-49176-49177-49178-49179-49180-49181-49182-49183-49184-49185-49186-49187-49188-49189-49190-49191-49192-49193-49194-49195-49196-49197-49198-49199-49200-49201-49202-49203-49204-49205-49206-49207-49208-49209-49210-49211-49212-49213-49214-49215-49216-49217-49218-49219-49220-49221-49222-49223-49224-49225-49226-49227-49228-49229-49230-49231-49232-49233-49234-49235-49236-49237-49238-49239-49240-49241-49242-49243-49244-49245-49246-49247-49248-49249-49250-49251-49252-49253-49254-49255-49256-49257-49258-49259-49260-49261-49262-49263-49264-49265-49266-49267-49268-49269-49270-49271-49272-49273-49274-49275-49276-49277-49278-49279-49280-49281-49282-49283-49284-49285-49286-49287-49288-49289-49290-49291-49292-49293-49294-49295-49296-49297-49298-49299-49300-49301-49302-49303-49304-49305-49306-49307-49308-49309-49310-49311-49312-49313-49314-49315-49316-49317-49318-49319-49320-49321-49322-49323-49324-49325-49326-49327-49328-49329-49330-49331-52392-52393-52394-52395-52396-52397-52398-5815-5816-5817-5818-253-65413-65415-198-199,11-10-0-13-65281,1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22-23-24-25-26-27-28-29-30-41-256-257-258-259-260-65281-65282,0Seen in live traffic
- Connections
- 13
- First seen
- 2026-09-17 13:53 UTC
- Last seen
- 2026-09-17 14:19 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.