User-Agent

Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

first seen 2026-07-23 18:58 · last seen 2026-10-31 06:21 · JSON

Last 7 days (2 observations)

Distinct clients per day (last 30 days, peak 1/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

Browser / clientFirefox 128.0
Operating systemmacOS 10.15
Device classdesktop
Noteinferred from the self-declared string — a claim, not a measurement; compare with the wire fingerprints above

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.

TLS ClientHello (JA4)

fingerprintco-occurrences
t13d1516h2_8daaf6152771_33a51b5ad3c524
t13d1513h2_8daaf6152771_748f4c70de1c12
t13d311100_e8f1e7e78f70_d41ae481755e Match?Exact match in Thumbprint's published controlled catalog captures: rust-hyper 1.11.1, rust-hyper 1.12.0, rust-hyper 1.11.0, +1 more.The fingerprint page shows the full measured match list. More on the catalog.3

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn12enus_a72b71f519fc_000000000000_00000000000012
ge20nn11ruru_3901d4197baf_000000000000_0000000000004
ge20nn11enus_3901d4197baf_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 152.0.5, firefox 153.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog.3
ge20nn11ptbr_3901d4197baf_000000000000_0000000000003
ge20nn11dede_3901d4197baf_000000000000_0000000000003
ge20nn11jajp_3901d4197baf_000000000000_0000000000003
ge11nr040000_177aea7101ae_000000000000_0000000000003
ge20nn11zhcn_3901d4197baf_000000000000_0000000000002
ge20nn11eses_3901d4197baf_000000000000_0000000000002
ge20nn11engb_3901d4197baf_000000000000_0000000000002

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;4:131072;5:16384|12517377|0|m,p,a,s24
1:65536;2:0;4:131072;5:16384|12517377|1:0:0:256|m,p,a,s8
1:65536;2:0;4:131072;5:16384|12517377|1:0:0:42|m,p,a,s4

TCP SYN (p0f)

fingerprintco-occurrences
4:47+17:0:1460:65535,3:mss,sok,ts,nop,ws:df,id+:015
4:47+17:0:1460:1152,0:mss,sok,ts,nop,ws:df,id+:09
4:47+17:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:03
6:47+17:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:03
6:55+9:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:03
4:50+14:0:1460:32768,10:mss,nop,ws,sok,ts::02
4:46+18:0:1460:mss*44,9:mss,nop,nop,sok,nop,ws:df,id+:01
4:51+13:0:1460:32768,10:mss,nop,ws,sok,ts::01
4:50+14:0:1380:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df:01
4:48+16:0:1440:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df:01

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1460_315
1152_2-4-8-1-3_1460_009
64800_2-4-8-1-3_1440_76
64240_2-4-8-1-3_1460_73
32768_2-1-3-4-8_1460_103
65535_2-1-3-1-1-8-4-0-0_1440_61
64240_2-1-1-4-1-3_1460_91
65535_2-1-3-1-1-8-4-0-0_1380_61

Country

fingerprintco-occurrences
NL · Netherlands27
SG · Singapore3
SE · Sweden3
FI · Finland3
CN · China1
TR · Turkey1
AT · Austria1

Network (ASN)

fingerprintco-occurrences
AS197170 · TechTies Inc.24
AS45102 · Alibaba (US) Technology Co., Ltd.3
AS24940 · Hetzner Online GmbH3
AS215125 · Church of Cyberology3
AS214379 · South Park Networks LLC3
AS9121 · Turk Telekomunikasyon Anonim Sirketi1
AS208323 · Foundation for Applied Privacy1
AS24400 · Shanghai Mobile Communications Co.,Ltd.1

TLS supported groups

fingerprintco-occurrences
001d,0017,001e,0019,0018,0100,0101,0102,0103,0104 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0, php-guzzle 8.3.1, curl 7.88.1, +10 more.The fingerprint page shows the full measured match list. More on the catalog.2
001d,0017,0018,0019,0100,01011