User-Agent

Mozilla/5.0 compatible; FastSourceScanner/1.0

first seen 2026-07-30 13:33 · last seen 2026-10-25 03:58 · JSON

Last 7 days (1 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 / clientFastSourceScanner 1.0
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
t13d1812h1_85036bcba153_d41ae481755e5

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn040000_e1d2031bdfea_000000000000_0000000000002
ge11cn040000_e1d2031bdfea_b04fd684bb87_349cc859444c2
ge11cn040000_e1d2031bdfea_b04fd684bb87_cf6d1e4ab6391

TCP SYN (p0f)

fingerprintco-occurrences
4:111+17:0:1360:mss*48,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:03
4:110+18:0:1360:mss*48,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:02

TCP SYN (JA4T)

fingerprintco-occurrences
65280_2-1-3-1-1-4_1360_85

Country

fingerprintco-occurrences
NL · Netherlands4
GB · United Kingdom1

Network (ASN)

fingerprintco-occurrences
AS213790 · Limited Network LTD5

TLS supported groups

fingerprintco-occurrences
001d,0017,001e,0019,00181