TLS ClientHello (JA4)

t13d1515h1_8daaf6152771_0a20fe35d3a5

first seen 2026-06-22 03:24 · last seen 2026-09-15 17:41 · 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

t13d1515h1_8daaf6152771_0a20fe35d3a5

Mozilla/5.0 (iPhone; CPU iPhone OS 17_5 like Mac…

User-Agent claims Safari 26.0

TLS cipher list matches no measured Safari capture

The offered TLS cipher suites match no controlled capture of Safari. 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 (iPhone; CPU iPhone OS 17_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.0 Mobile/15E148 Safari/604.1
Claimed version	26.0
Measured versions	26.5, 26.5.2, 26.6.1, 26.4, 26.6.2
Layer	cipher suites differ
JA4 label	unlabeled

medium

2026-06-22

t13d1515h1_8daaf6152771_0a20fe35d3a5

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) …

User-Agent claims Chrome 152.0.0.0

TLS extensions or signature algorithms differ from every measured Chrome capture

The cipher suites match Chrome, but the extension set or signature algorithms differ from every capture even after normalizing handshake-variant extensions. Most likely a field-trial, ECH, or build variant the catalog has not captured; occasionally mimicry. This sharpens as catalog coverage grows.

Full User-Agent	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.36
Claimed version	152.0.0.0
Measured versions	151.0.7922.174, 149.0.7827.103, 149.0.7827.53, 149.0.7827.115, 149.0.7827.114, 149.0.7827.54, 149.0.7827.201, 150.0.7871.187, 153.0.8010.36, 151.0.7922.170, 152.0.7977.83, 152.0.7977.82, 152.0.7977.65, 150.0.7871.114, 150.0.7871.115, 150.0.7871.129, 151.0.7922.72, 151.0.7922.137, 152.0.7977.75, 151.0.7922.173, 149.0.7827.102, 149.0.7827.156, 151.0.7922.71, 150.0.7871.128, 151.0.7922.108, 149.0.7827.155, 150.0.7871.125, 150.0.7871.46, 151.0.7922.109, 152.0.7977.64, 148.0.7778.179, 149.0.7827.200
Layer	cipher suites match; extension set or signature algorithms differ
JA4 label	unlabeled

low

2026-09-10

Last 7 days (1431 observations)

Distinct clients per day (last 30 days, peak 2126/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	`d (domain)`
Cipher count	`15`
Extension count	`15`
ALPN	`h1`
Ciphers	`002f, 0035, 009c, 009d, 1301, 1302, 1303, c013, c014, c02b, c02c, c02f, c030, cca8, cca9`
Extensions	`0005, 000a, 000b, 000d, 0012, 0017, 001b, 0023, 002b, 002d, 0033, fe0d, ff01`
Signature algorithms	`0403, 0804, 0401, 0503, 0805, 0501, 0806, 0601`
JA4_r	`t13d1515h1_002f,0035,009c,009d,1301,1302,1303,c013,c014,c02b,c02c,c02f,c030,cca8,cca9_0005,000a,000b,000d,0012,0017,001b,0023,002b,002d,0033,fe0d,ff01_0403,0804,0401,0503,0805,0501,0806,0601`
JA4_o (sample)	`t13d1515h1_acb858a92679_17bc447aa416`
JA4_ro (sample)	`t13d1515h1_1301,1302,1303,c02b,c02f,c02c,c030,cca9,cca8,c013,c014,009c,009d,002f,0035_0005,0033,002b,0010,fe0d,0023,000d,002d,ff01,000a,000b,001b,0000,0017,0012_0403,0804,0401,0503,0805,0501,0806,0601`

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
`ge11nn14enus_4a2973d235de_000000000000_000000000000`	7382
`ge11nn13enus_9db22d02e17a_000000000000_000000000000`	4302
`ge11nn14enus_d9d4fb46dcb1_000000000000_000000000000`	4
`ge11nr14zhcn_142314a30a6a_000000000000_000000000000`	3
`ge11nn14enus_b8b6b186c967_000000000000_000000000000`	3
`ge11nn15zhcn_9cd8e369418e_000000000000_000000000000`	2
`ge11nr13zhcn_445f7bd1cb97_000000000000_000000000000`	1
`ge11nn06enus_a89d28968959_000000000000_000000000000`	1
`ge11nr14enus_4a2973d235de_000000000000_000000000000`	1
`ge11nn14enus_dc087c72732a_000000000000_000000000000`	1

TCP SYN (p0f)

fingerprint	co-occurrences
`4:48+16:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:0`	256
`4:50+14:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:0`	243
`4:47+17:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:0`	231
`4:46+18:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:0`	215
`4:49+15:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:0`	182
`4:47+17:0:1452:65535,6:mss,sok,ts,nop,ws:df,id+:0`	180
`4:51+13:0:1452:65535,6:mss,sok,ts,nop,ws:df,id+:0`	170
`4:46+18:0:1412:65535,6:mss,sok,ts,nop,ws:df,id+:0`	169
`4:51+13:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:0`	168
`4:46+18:0:1452:65535,6:mss,sok,ts,nop,ws:df,id+:0`	155

TCP SYN (JA4T)

fingerprint	co-occurrences
`65535_2-4-8-1-3_1460_6`	2107
`65535_2-4-8-1-3_1412_6`	1505
`65535_2-4-8-1-3_1452_6`	1458
`65535_2-4-8-1-3_1440_6`	1020
`65535_2-4-8-1-3_1400_6`	780
`65535_2-4-8-1-3_1460_8`	496
`64240_2-4-8-1-3_1460_7`	383
`64240_2-4-8-1-3_1452_7`	238
`65535_2-4-8-1-3_1412_8`	205
`5808_2-4-8-1-3_1452_4`	187

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36`	1887
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36`	1878
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36`	1821
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36`	1795
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36`	1471
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36`	1433
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36`	1398
`Mozilla/5.0 (iPhone; CPU iPhone OS 17_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.0 Mobile/15E148 Safari/604.1`	6
`Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36`	3
`Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36`	3

Country

fingerprint	co-occurrences
`BR` · Brazil	1719
`US` · United States	1522
`AR` · Argentina	515
`GB` · United Kingdom	405
`PK` · Pakistan	394
`ZA` · South Africa	346
`BD` · Bangladesh	306
`VN` · Vietnam	303
`MA` · Morocco	292
`MX` · Mexico	291

Network (ASN)

fingerprint	co-occurrences
`AS7922` · Comcast Cable Communications, LLC	324
`AS45899` · VNPT Corp	235
`AS9121` · Turk Telekomunikasyon Anonim Sirketi	151
`AS36903` · Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	133
`AS5384` · Emirates Internet	124
`AS28573` · Claro NXT Telecomunicacoes Ltda	120
`AS701` · Verizon Business	116
`AS14593` · Space Exploration Technologies Corporation	109
`AS36925` · MEDITELECOM	106
`AS2856` · British Telecommunications Limited	104