User-Agent

ncsrv

first seen 2026-07-09 01:32 · last seen 2026-10-23 15:41 · JSON

Distinct clients per day (last 30 days, peak 2/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 / clientncsrv
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
t13d3112h1_e8f1e7e78f70_24695f2957a718

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn060000_f6476fbaf741_000000000000_00000000000018

TCP SYN (p0f)

fingerprintco-occurrences
6:50+14:0:1440:mss*45,7:mss,nop,nop,sok,nop,ws:flow:04
6:48+16:0:1440:mss*45,7:mss,nop,nop,sok,nop,ws:flow:03
6:51+13:0:1440:mss*45,7:mss,nop,nop,sok,nop,ws:flow:03
6:52+12:0:8440:mss*7,7:mss,nop,nop,sok,nop,ws:flow:02
6:51+13:0:8440:mss*7,7:mss,nop,nop,sok,nop,ws:flow:02
6:52+12:0:1440:mss*45,7:mss,nop,nop,sok,nop,ws:flow:02
6:50+14:0:8440:mss*7,7:mss,nop,nop,sok,nop,ws:flow:01
6:48+16:0:8440:mss*7,7:mss,nop,nop,sok,nop,ws:flow:01

TCP SYN (JA4T)

fingerprintco-occurrences
64800_2-1-1-4-1-3_1440_712
59080_2-1-1-4-1-3_8440_76

Country

fingerprintco-occurrences
US · United States16
CA · Canada2

Network (ASN)

fingerprintco-occurrences
AS63949 · Akamai Connected Cloud11
AS14061 · DigitalOcean, LLC7

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.3