Network (ASN)

AS21859

first seen 2026-06-11 06:43 · last seen 2026-09-11 22:18 · JSON

Last 7 days (12 observations)

Distinct clients per day (last 30 days, peak 8/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

Network nameZenlayer Inc
Domainzenlayer.com

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
t12d330600_5172cef6ed69_021165082e1c81
t13d1812h1_85036bcba153_d41ae481755e18
t12d130600_2d7513195f68_021165082e1c15
t13i1909h1_9dc949149365_97f8aa674fd914
t12d180700_4b22cbed5bed_2dae41c691ec4
q13d0311h3_55b375c5d22e_653d80c3fe9d Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chromium 149.0.7827.102, chrome 149.0.7827.102, +52 more.The fingerprint page shows the full measured match list. More on the catalog.3
t13i1811h1_85036bcba153_d41ae481755e2
t12i130500_2d7513195f68_021165082e1c2
t13d1516h2_8daaf6152771_d8a2da3f94cd Match?Exact match in Thumbprint's published controlled catalog captures: chromium 149.0.7827.102, chrome 149.0.7827.102, chrome 149.0.7827.156, +25 more.The fingerprint page shows the full measured match list. More on the catalog.2
t13d1712h1_ab0a1bf427ad_882d495ac3812

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr040000_e1d2031bdfea_000000000000_00000000000095
ge11nr040000_88d30a62b7ad_000000000000_00000000000017
po20nn07*000_8db2b212706a_000000000000_0000000000009
ge20nn06*000_b74359a06b81_000000000000_0000000000009
ge30nr14enus_186438911b7e_000000000000_0000000000003
ge11nn050000_2469c960a647_000000000000_0000000000003
ge11nn050000_b223a0ebb0b5_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: python-requests 2.34.2, python-requests 2.33.1, python-requests 2.32.3.The fingerprint page shows the full measured match list. More on the catalog.2
ge20nr14enus_186438911b7e_000000000000_0000000000001
ge11nn040000_cf1edba2959c_000000000000_0000000000001
ge20nn14enus_186438911b7e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 149.0.7827.53, chrome 149.0.7827.155, chromium 149.0.7827.102, +2 more.The fingerprint page shows the full measured match list. More on the catalog.1

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:4096;2:0;4:65535;5:16384;3:100;6:65536|16777216|0|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: python-httpx 0.28.1.The fingerprint page shows the full measured match list. More on the catalog.20
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 151.0.7922.34, chrome 151.0.7922.137, +43 more.The fingerprint page shows the full measured match list. More on the catalog.3

TCP SYN (p0f)

fingerprintco-occurrences
4:52+12:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:031
4:53+11:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:026
4:51+13:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:018
4:54+10:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:012
6:52+12:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:012
4:50+14:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:07
4:50+14:0:1460:mss*22,7:mss,sok,ts,nop,ws:df,id+:05
4:51+13:0:1460:mss*22,7:mss,sok,ts,nop,ws:df,id+:05
4:47+17:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:03
4:49+15:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:02

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_795
64800_2-4-8-1-3_1440_718
65535_2-1-3-1-1-4_1380_82
32767_2-4-8-1-3_1440_92
64860_2-1-3-1-1-4_1380_81
65535_2-4-8-1-3_1400_71
65535_2-4-8-1-3_1240_81

QUIC transport params

fingerprintco-occurrences
q13_313ab9afcaf5 Match?Exact match in Thumbprint's published controlled catalog captures: chromium 149.0.7827.102, chrome 149.0.7827.102, edge 149.0.4022.52, +6 more.The fingerprint page shows the full measured match list. More on the catalog.2
q12_97eeb91f9c98 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chrome 151.0.7922.137, chromium 151.0.7922.34, +41 more.The fingerprint page shows the full measured match list. More on the catalog.1
q14_3a9b21a290be1

User-Agent

fingerprintco-occurrences
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.6312.86 Safari/537.36112
python-httpx/0.28.120
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.363
Mozilla/5.03
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X) AppleWebKit/605.1.15 FeedReportFullText/1.02
Mozilla/5.0 (Windows NT 10.0; Win64; rv:143.0) Gecko/20100101 Firefox/143.02
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Mobile Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.67 Safari/537.361

Country

fingerprintco-occurrences
US · United States119
NL · Netherlands14
HK · Hong Kong SAR China4
JP · Japan3
AR · Argentina2
SG · Singapore2
SE · Sweden1
ID · Indonesia1
TW · Taiwan1