User-Agent

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3 Safari/605.1.15

first seen 2026-06-11 12:43 · last seen 2026-09-04 09:01 · 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 / clientSafari 18.3
Operating systemmacOS 10.15.7
Device classdesktop
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
t13d2014h2_a09f3c656075_e42f34c56612 Match?Exact match in Thumbprint's published controlled catalog captures: safari 26.5.2, safari 26.5, urlsession 6.1.2, +1 more.The fingerprint page shows the full measured match list. More on the catalog.3
q13d0311h3_55b375c5d22e_f2a83c8e78ae Match?Exact match in Thumbprint's published controlled catalog captures: safari 26.5.2, urlsession 6.1.2, urlsession 6.3.3, +5 more.The fingerprint page shows the full measured match list. More on the catalog.3
t13d131000_f57a46bbacb6_e7c285222651 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.23.12.The fingerprint page shows the full measured match list. More on the catalog.2
t13i130900_f57a46bbacb6_e7c2852226511
t13d0810h2_0a6b9a94e12d_5603904660151
t13d131300_f57a46bbacb6_1bd98dace7751
t13d1111h2_5997877c74f9_9ced094328c91

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn05enus_813e32c09d15_000000000000_0000000000003
ge20nn04enus_989c7cc05c9b_000000000000_0000000000002
ge20nr09ja00_5ad46a65401a_000000000000_0000000000002
ge30nr09ja00_5ad46a65401a_000000000000_0000000000002
ge11nn05enus_f3bb7aa45ec4_000000000000_0000000000001
ge20nn08ja00_b65a39d4559c_000000000000_0000000000001
ge30nn08ja00_1945e0741196_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;4:6291456;6:262144;4:1048576|15663105|1:0:0:256|m,a,s,p2
2:0;3:100;4:2097152;8:1;9:1|10420225|0|m,s,a,p2
2:0;3:100;4:2097152;8:1;9:1|10420225|1:0:0:256|m,s,a,p1

TCP SYN (p0f)

fingerprintco-occurrences
4:52+12:0:1460:mss*29,9:mss,sok,ts,nop,ws:df,id+:02
4:46+18:0:1360:65535,6:mss,nop,ws,nop,nop,nop,nop,nop,nop,nop,nop,nop,nop,nop,nop,sok,eol+1:id-:02
4:49+15:0:1460:mss*29,9:mss,sok,ts,nop,ws:df,id+:01
4:54+10:0:1460:32768,10:mss,nop,ws,sok,ts::01
4:58+6:0:1420:mss*30,9:mss,sok,ts,nop,ws:df,id+:01
4:55+9:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01
4:47+17:0:1452:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df:01

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-1-1-1-1-1-1-1-1-1-1-4-0-0_1360_62
32768_2-1-3-4-8_1460_101
42600_2-4-8-1-3_1420_91
64240_2-4-8-1-3_1460_71
65535_2-1-3-1-1-8-4-0-0_1452_61

QUIC transport params

fingerprintco-occurrences
q08_17f5c3ee087c3

Country

fingerprintco-occurrences
CN · China6
US · United States4
NL · Netherlands1
BE · Belgium1

Network (ASN)

fingerprintco-occurrences
AS22295 · Advin Services LLC3
AS4134 · CHINANET BACKBONE3
AS4837 · CHINA UNICOM China169 Backbone3
AS396982 · Google LLC1
AS215125 · Church of Cyberology1
AS27284 · Fourplex Telecom LLC1

Cross-transport links

TLS ClientHello fingerprints observed from the same client via the beacon's correlation id on the other transport (e.g. this stack over TCP ↔ that stack over QUIC).

fingerprintlinked observations
t13d2014h2_a09f3c656075_e42f34c566122
q13d0311h3_55b375c5d22e_f2a83c8e78ae2