User-Agent

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36 (compatible; meta-webindexer/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler))

first seen 2026-10-03 13:33 · last seen 2026-10-23 09:43 · JSON

Distinct clients per day (last 30 days, peak 3/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 / clientmeta-webindexer 1.1
Operating systemmacOS 10.15.7
Device classbot
Declared URLhttps://developers.facebook.com/docs/sharing/webmasters/crawler
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
t13d3111h2_e8f1e7e78f70_5ac7197df9d29

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr07enus_7226337734ed_000000000000_0000000000006
ge20nn09enus_c5abe4666a67_000000000000_0000000000003

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:4096;2:0;5:16384;6:131072;3:100;4:65536|26148865|0|m,s,p,a9

TCP SYN (p0f)

fingerprintco-occurrences
6:56+8:0:1380:65535,8:mss,sok,ts,nop,ws::06
6:58+6:0:1380:65535,8:mss,sok,ts,nop,ws::03

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1380_89

Country

fingerprintco-occurrences
US · United States9

Network (ASN)

fingerprintco-occurrences
AS32934 · Facebook, Inc.9

TLS supported groups

fingerprintco-occurrences
001d,0017,001e,0019,00183