User-Agent

curl/8.8.0

first seen 2026-08-09 19:44 · last seen 2026-10-15 07:50 · JSON

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 / clientcurl 8.8.0
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
t13d2012h1_2b729b4bf6f3_9e7b989ebec854
t13d1413h1_db9fa7b5b297_e24568c0d4401

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn030000_fe444ad14866_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.16.0, curl 7.88.1, curl 8.21.0, +1 more.The fingerprint page shows the full measured match list. More on the catalog.55

TCP SYN (p0f)

fingerprintco-occurrences
4:115+13:0:1414:mss*44,8:mss,nop,ws,nop,nop,sok::07
4:114+14:0:1414:mss*44,8:mss,nop,ws,nop,nop,sok::06
4:116+12:0:1414:mss*44,8:mss,nop,ws,nop,nop,sok::05
4:110+18:0:1414:mss*44,8:mss,nop,ws,nop,nop,sok::03
4:112+16:0:1414:mss*44,8:mss,nop,ws,nop,nop,sok::03
4:49+15:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
6:52+12:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:02
6:48+16:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:02
4:52+12:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:02
4:45+19:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:02

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-1-3-1-1-4_1414_830
64800_2-4-8-1-3_1440_78
65535_2-4-8-1-3_1460_68
64240_2-4-8-1-3_1460_75
64240_2-4-8-1-3_1452_71
65535_2-4-8-1-3_1432_61
64240_2-4-8-1-3_1318_71
64240_2-1-3-1-1-4_1358_81

Country

fingerprintco-occurrences
JP · Japan34
US · United States20
NL · Netherlands1

Network (ASN)

fingerprintco-occurrences
AS2514 · NTT PC Communications, Inc.11
AS7922 · Comcast Cable Communications, LLC8
AS4713 · NTT DOCOMO BUSINESS,Inc.6
AS10010 · TOKAI Communications Corporation4
AS10013 · FreeBit Co.,Ltd.4
AS4685 · Asahi Net3
AS7018 · AT&T Enterprises, LLC2
AS10796 · Charter Communications Inc2
AS9595 · NTT-ME Corporation2
AS20115 · Charter Communications LLC2

TLS supported groups

fingerprintco-occurrences
001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28, rust-reqwest 0.11.27, powershell 7.6.8, +1 more.The fingerprint page shows the full measured match list. More on the catalog.1