User-Agent

facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)

first seen 2026-06-13 08:49 · last seen 2026-09-16 02:32 · JSON

Last 7 days (2246 observations)

Distinct clients per day (last 30 days, peak 338/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 / clientfacebookexternalhit 1.1
Device classbot
Declared URLhttp://www.facebook.com/externalhit_uatext.php
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_5ac7197df9d28669
t13d2212h1_3522af84f765_8d633dac71242
t13d131200_f57a46bbacb6_9249cab70c771
t13d131300_f57a46bbacb6_1bd98dace7751

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn030000_80b089f68b8e_000000000000_0000000000008411
ge20nn040000_3dccbaa13f05_000000000000_000000000000165
ge20nn030000_0d4c7aba53a3_000000000000_00000000000059
ge20nn020000_5594a17e7e7e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0, curl 8.18.0, +9 more.The fingerprint page shows the full measured match list. More on the catalog.14
ge20nn040000_8ab5aeda5c38_000000000000_00000000000012
ge20nn030000_042112399351_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0.The fingerprint page shows the full measured match list. More on the catalog.3
ge20nn020000_e5a56608905c_000000000000_0000000000003
ge20nn030000_c0d7f5f1a627_000000000000_0000000000002
ge11nn050000_6381de1c7315_000000000000_0000000000001
ge11nn050000_9caab87a0805_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:4096;2:0;5:16384;6:131072;3:100;4:65536|26148865|0|m,s,p,a8608
1:4096;2:0;5:16384;6:131072;3:100;4:65536;11105:65535;11106:65535;11107:65535;11108:10;11109:10|26148865|0|m,s,p,a61

TCP SYN (p0f)

fingerprintco-occurrences
6:56+8:0:1380:65535,8:mss,sok,ts,nop,ws::05476
6:46+18:0:1380:65535,8:mss,sok,ts,nop,ws::0684
6:53+11:0:1380:65535,8:mss,sok,ts,nop,ws::0616
6:58+6:0:1380:65535,8:mss,sok,ts,nop,ws::0608
6:49+15:0:1380:65535,8:mss,sok,ts,nop,ws::0601
6:55+9:0:1380:65535,8:mss,sok,ts,nop,ws::0205
6:47+17:0:1380:65535,8:mss,sok,ts,nop,ws::0125
6:52+12:0:1380:65535,8:mss,sok,ts,nop,ws::086
6:48+16:0:1380:65535,8:mss,sok,ts,nop,ws::080
6:54+10:0:1380:65535,8:mss,sok,ts,nop,ws::048

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1380_88653
43200_2-4-8-1-3_1440_91
42600_2-4-8-1-3_1420_91

Country

fingerprintco-occurrences
US · United States6744
DE · Germany660
SG · Singapore655
GB · United Kingdom614

Network (ASN)

fingerprintco-occurrences
AS32934 · Facebook, Inc.8671
AS396982 · Google LLC1
AS206216 · Advin Services LLC1