User-Agent

Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:127.0) Gecko/20100101 Firefox/127.0

first seen 2026-06-30 16:16 · last seen 2026-10-31 16:12 · 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 127.0
Operating systemWindows 10.0
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
t13d151100_8daaf6152771_ab7e3b40a67751
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.4
t13d1411h1_cbb2034c60b8_e7c2852226513
t13d3112h1_e8f1e7e78f70_d41ae481755e1
t13d1313h2_f57a46bbacb6_9249cab70c771
t13d1312h2_f57a46bbacb6_f50d94e863eb Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.27.1, go-net/http 1.27.3, go-net/http 1.27.0, +1 more.The fingerprint page shows the full measured match list. More on the catalog.1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr34enus_ee7234eb47b7_000000000000_0000000000005
ge11nr39enus_d1cf5e80c1a6_000000000000_0000000000004
ge11nr040000_177aea7101ae_000000000000_0000000000004
ge11nr40enus_4d2a4bd3cdc8_000000000000_0000000000003
ge11nr35enus_34e0270fbbac_000000000000_0000000000003
ge11nr41enus_fd8eed19052c_000000000000_0000000000003
ge11nr41enus_c0fe3e80018a_000000000000_0000000000003
ge11nr40enus_f77e8c658148_000000000000_0000000000003
ge11nr33enus_83ed8b88bd45_000000000000_0000000000003
ge11nr33enus_bbfdbeea19bc_000000000000_0000000000003

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p1
2:0;4:4194304;5:1048576;6:10485760|1073741824|0|a,m,p,s Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.27.1, go-net/http 1.27.3, go-net/http 1.27.0, +1 more.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (p0f)

fingerprintco-occurrences
4:56+8:0:1460:mss*29,11:mss,sok,ts,nop,ws:df,id+:035
4:54+10:0:1460:mss*29,9:mss,sok,ts,nop,ws:df,id+:012
4:55+9:0:1460:mss*29,9:mss,sok,ts,nop,ws:df,id+:04
4:120+8:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:03
4:53+11:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
4:47+17:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01
4:46+18:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01
4:57+7:0:1460:mss*29,12:mss,sok,ts,nop,ws:df,id+:01
4:51+13:0:1300:65535,10:mss,sok,ts,nop,ws:df,id+:01
4:43+21:0:1340:mss*44,7:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
42340_2-4-8-1-3_1460_1135
42340_2-4-8-1-3_1460_916
64240_2-4-8-1-3_1460_74
64240_2-1-3-1-1-4_1460_83
42340_2-4-8-1-3_1460_121
64240_2-4-8-1-3_1340_71
65535_2-4-8-1-3_1300_101

Country

fingerprintco-occurrences
NL · Netherlands39
US · United States17
SG · Singapore4
GB · United Kingdom1

Network (ASN)

fingerprintco-occurrences
AS48090 · TECHOFF SRV LIMITED36
AS150303 · SoloRDP10
AS142430 · DIGI VPS6
AS45102 · Alibaba (US) Technology Co., Ltd.4
AS197170 · TechTies Inc.3
AS20012 · Interworks Networking Services1
AS201738 · UFO TECHNOLOGIES LIMITED1

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.1
11ec,11eb,11ed,001d,0017,0018,0019 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.27.3, go-net/http 1.26.10.The fingerprint page shows the full measured match list. More on the catalog.1