User-Agent

WhatsApp/2.23.20.0

first seen 2026-07-30 15:19 · last seen 2026-10-16 14:56 · 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 / clientWhatsApp 2.23.20.0
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
t13d1713h1_5b57614c22b0_eca864cca44a2

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn05en00_ec73517afef7_000000000000_0000000000001
ge11nn05es00_ec73517afef7_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
6:43+21:0:1300:65535,9:mss,sok,ts,nop,ws:flow:01
6:237+18:0:1432:65535,9:mss,sok,ts,nop,ws:flow:01

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1432_91
65535_2-4-8-1-3_1300_91

Country

fingerprintco-occurrences
IN · India1
ES · Spain1

Network (ASN)

fingerprintco-occurrences
AS55836 · Reliance Jio Infocomm Limited1
AS57269 · DIGI SPAIN TELECOM S.A1

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, winhttp 10.0.20348.1, +2 more.The fingerprint page shows the full measured match list. More on the catalog.1