TLS ClientHello (JA4)

t13i1909h2_9dc949149365_97f8aa674fd9

first seen 2026-06-11 03:20 · last seen 2026-11-01 03:51 · JSON

Inconsistencies

User-Agents observed with this fingerprint that contradict what it proves at the wire. all inconsistencies →

fingerprint User-Agent claims wire shows confidence seen first seen last seen

t13i1909h2_9dc949149365_97f8aa674fd9

Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:132…

User-Agent claims Firefox 132.0

TLS cipher list matches no measured Firefox capture

The offered TLS cipher suites match no controlled capture of Firefox. Cipher lists are very stable per browser, so a different one is a real inconsistency — though a TLS-inspecting proxy re-originating the handshake is an honest cause, which holds this at medium.

Full User-Agent	Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:132.0) Gecko/20100101 Firefox/132.0
Claimed version	132.0
Measured versions	146.0.1, 154.0, 140.0.2, 157.0.1, 151.0.2, 155.0, 153.0.3, 142.0.1, 153.0.4, 152.0.6, 150.0.2, 135.0, 156.0.1, 132.0, 152.0.3, 141.0, 153.0, 151.0.3, 156.0, 152.0.4, 151.0, 152.0.1, 151.0.4, 139.0, 153.0.1, 158.0.1, 152.0.5, 157.0, 158.0, 148.0.2, 137.0, 155.0.1, 159.0, 144.0.2, 154.0.1, 134.0
Layer	cipher suites differ
JA4 label	unlabeled

medium

2026-06-11

2026-06-12

t13i1909h2_9dc949149365_97f8aa674fd9

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleW…

User-Agent claims Edge 152.0.0.0

TLS cipher list matches no measured Edge capture

The offered TLS cipher suites match no controlled capture of Edge. Cipher lists are very stable per browser, so a different one is a real inconsistency — though a TLS-inspecting proxy re-originating the handshake is an honest cause, which holds this at medium.

Full User-Agent	Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.36 Edg/152.0.0.0
Claimed version	152.0.0.0
Measured versions	153.0.4234.48, 152.0.4191.66, 151.0.4129.101, 150.0.4078.65, 155.0.4283.62, 151.0.4129.72, 149.0.4022.98, 149.0.4022.69, 149.0.4022.52, 150.0.4078.99, 149.0.4022.80, 151.0.4129.93, 151.0.4129.59, 154.0.4258.62
Layer	cipher suites differ
JA4 label	unlabeled

medium

2026-09-19

Last 7 days (20 observations)

Distinct clients per day (last 30 days, peak 5/day)

Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.

Decomposed attributes

Protocol	`t (TLS over TCP)`
TLS version	`13`
SNI	`i (no SNI / IP)`
Cipher count	`19`
Extension count	`9`
ALPN	`h2`
Ciphers	`000a, 002f, 0035, 009c, 009d, 1301, 1302, 1303, c009, c00a, c012, c013, c014, c02b, c02c, c02f, c030, cca8, cca9`
Extensions	`0005, 000a, 000b, 000d, 0012, 002b, 0033, ff01`
Signature algorithms	`0804, 0403, 0807, 0805, 0806, 0401, 0501, 0601, 0503, 0603, 0201, 0203`
JA4_r	`t13i1909h2_000a,002f,0035,009c,009d,1301,1302,1303,c009,c00a,c012,c013,c014,c02b,c02c,c02f,c030,cca8,cca9_0005,000a,000b,000d,0012,002b,0033,ff01_0804,0403,0807,0805,0806,0401,0501,0601,0503,0603,0201,0203`
JA4_o (sample)	`t13i1909h2_f2ce2cda000b_eb74760b2519`
JA4_ro (sample)	`t13i1909h2_cca8,cca9,c02f,c030,c02b,c02c,c013,c009,c014,c00a,009c,009d,002f,0035,c012,000a,1303,1301,1302_0005,000a,000b,000d,ff01,0010,0012,002b,0033_0804,0403,0807,0805,0806,0401,0501,0601,0503,0603,0201,0203`

Co-observed signals

Signals from other families seen in the same observation. A fingerprint spread thinly across many lower-layer signatures is a classic inconsistency signal.

HTTP request (JA4H)

fingerprint	co-occurrences
`ge20nr030000_80b089f68b8e_000000000000_000000000000`	347
`ge20nr030000_ff50983941c1_000000000000_000000000000`	166
`ge20nr040000_be74ea4f9dce_000000000000_000000000000`	29
`ge20nr040000_88d30a62b7ad_000000000000_000000000000`	20
`ge20nn040000_be74ea4f9dce_000000000000_000000000000`	5
`po20nn040000_f60e6ebff6de_000000000000_000000000000`	1

HTTP/2 frames (Akamai)

fingerprint	co-occurrences
`2:0;4:4194304;5:16384;6:10485760\|1073741824\|0\|a,m,p,s` Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.10, go-net/http 1.26.9, +8 more.The fingerprint page shows the full measured match list. More on the catalog.	567
`0\|00\|0\|m,s,p,a`	1

TCP SYN (p0f)

fingerprint	co-occurrences
`4:56+8:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0`	84
`4:50+14:0:1460:mss*29,10:mss,sok,ts,nop,ws:df,id+:0`	84
`4:51+13:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	61
`4:51+13:0:1460:mss*29,10:mss,sok,ts,nop,ws:df,id+:0`	57
`4:53+11:0:1460:mss*29,10:mss,sok,ts,nop,ws:df,id+:0`	56
`4:49+15:0:1460:mss*29,10:mss,sok,ts,nop,ws:df,id+:0`	51
`4:57+7:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0`	43
`4:54+10:0:1460:mss*29,10:mss,sok,ts,nop,ws:df,id+:0`	23
`4:57+7:0:1460:62727,10:mss,sok,ts,nop,ws:df,id+:0`	18
`4:48+16:0:1460:mss*29,10:mss,sok,ts,nop,ws:df,id+:0`	17

TCP SYN (JA4T)

fingerprint	co-occurrences
`42340_2-4-8-1-3_1460_10`	294
`62727_2-4-8-1-3_1460_7`	100
`64240_2-4-8-1-3_1460_7`	67
`62727_2-4-8-1-3_1460_10`	27
`29200_2-4-8-1-3_1460_7`	15
`65320_2-4-8-1-3_1420_7`	3
`32120_2-4-8-1-3_1460_7`	2
`42340_2-4-8-1-3_1460_12`	2
`64240_2-4-8-1-3_1460_10`	1
`64240_2-4-8-1-3_1460_9`	1

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (compatible; CyberConvoyScout/1.0; +https://scout.cyberconvoy.co)`	300
`visionheight.com/scan Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) Chrome/126.0.0.0 Safari/537.36`	159
`Mozilla/5.0`	65
`Mozilla/5.0 zgrab/0.x`	16
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:61.0) Gecko/20100101 Firefox/72.0`	16
`Mozilla/5.0 (compatible; GenomeCrawlerd/1.0; +https://www.nokia.com/genomecrawler)`	3
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.5005.63 Safari/537.36`	2
`Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:132.0) Gecko/20100101 Firefox/132.0`	2
`Mozilla/5.0 (compatible; research-scan/1.0)`	2
`Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:104.71.6212.24) Gecko/25.2.4212.671 Firefox/2.0`	1

Country

fingerprint	co-occurrences
`US` · United States	370
`GB` · United Kingdom	69
`IN` · India	64
`FR` · France	53
`AU` · Australia	4
`NO` · Norway	2
`KR` · South Korea	2
`JP` · Japan	1
`CH` · Switzerland	1
`BR` · Brazil	1

Network (ASN)

fingerprint	co-occurrences
`AS20473` · The Constant Company, LLC	300
`AS16509` · Amazon.com, Inc.	159
`AS63949` · Akamai Connected Cloud	64
`AS14061` · DigitalOcean, LLC	21
`AS396982` · Google LLC	3
`AS12876` · Scaleway SAS	3
`AS399486` · 12651980 CANADA INC.	2
`AS50304` · Blix Solutions AS	2
`AS51167` · Contabo GmbH	2
`AS14956` · RouterHosting LLC	2

TLS supported groups

fingerprint	co-occurrences
`001d,0017,0018,0019` Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.21.13, curl 8.7.1.The fingerprint page shows the full measured match list. More on the catalog.	63