Country
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ASN LANDING PAGE
AS21859
ZEN-ECN - Zenlayer Inc
Last updated · Jul 20, 2026
Total prefixes
1836
IPv4 prefixes
1679
IPv6 prefixes
157
ASN summary
How to read the scale of AS21859
ZEN-ECN - Zenlayer Inc currently reports 1836 prefixes and 80 upstream, downstream, or peer relationships. These counts describe the current dataset; they do not by themselves prove network quality, reach, or service use.
What can an ASN page answer?
An ASN page shows the public organization label, country or region, BGP prefixes, and available peer and upstream relationships. It adds network context but cannot confirm a website host, physical facility, security status, or service quality.
How should you read the organization and region fields?
ZEN-ECN - Zenlayer Inc is currently associated with an unknown region. These values come from public network sources and are useful lookup clues; an organization label, registration region, and actual service location may differ.
How should you verify the AS21859 result?
The page shows ASN data returned by the current upstream query; interpret it with the update time. Open representative IP pages from the same network and compare prefixes, source labels, and query times. Verify operator or service claims with the relevant registry or network operator.
How to verify this ASN result
AS21859 ASN lookupAS21859 BGPAS21859 peersAS21859 prefixesAS21859 upstreamsZEN-ECN - Zenlayer Inc ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
AS62610
AS62610
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AS135377
AS135377
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AS24429
AS24429
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AS139341
AS139341
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AS139057
AS139057
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AS142002
AS142002
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AS5065
AS5065
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AS17497
AS17497
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AS45903
AS45903
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AS396986
AS396986
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AS151373
AS151373
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AS136744
AS136744
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AS29752
AS29752
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AS13444
AS13444
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AS63473
AS63473
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AS150436
AS150436
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AS152179
AS152179
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AS38854
AS38854
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AS400866
AS400866
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AS52129
AS52129
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AS151397
AS151397
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AS7346
AS7346
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AS395793
AS395793
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AS401322
AS401322
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AS401783
AS401783
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AS18464
AS18464
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AS142285
AS142285
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AS202736
AS202736
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AS214143
AS214143
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AS45102
AS45102
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AS393437
AS393437
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AS132203
AS132203
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AS137969
AS137969
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AS213607
AS213607
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AS54113
AS54113
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AS219374
AS219374
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AS7289
AS7289
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AS137280
AS137280
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AS24151
AS24151
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AS138152
AS138152
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Peers
AS4229
AS4229
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AS1299
AS1299
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AS2914
AS2914
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AS6939
AS6939
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AS174
AS174
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AS20764
AS20764
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AS38082
AS38082
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AS3257
AS3257
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AS40850
AS40850
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AS4788
AS4788
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AS6762
AS6762
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AS3462
AS3462
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AS6461
AS6461
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AS9299
AS9299
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AS8529
AS8529
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AS8966
AS8966
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AS7195
AS7195
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AS12389
AS12389
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AS9498
AS9498
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AS18403
AS18403
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AS3356
AS3356
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AS198803
AS198803
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AS12956
AS12956
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AS7552
AS7552
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AS4775
AS4775
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AS39386
AS39386
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AS9260
AS9260
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AS200612
AS200612
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AS30844
AS30844
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AS38193
AS38193
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AS12365
AS12365
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AS1221
AS1221
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AS6453
AS6453
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AS24203
AS24203
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AS17557
AS17557
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AS4755
AS4755
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AS9457
AS9457
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AS63956
AS63956
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AS17639
AS17639
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AS6774
AS6774
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Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 101.33.12.0/24 | AS21859 | — |
| 101.33.13.0/24 | AS21859 | — |
| 101.33.14.0/24 | AS21859 | — |
| 101.33.15.0/24 | AS21859 | — |
| 101.55.23.0/24 | AS21859 | — |
| 102.177.183.0/24 | AS21859 | — |
| 103.100.171.0/24 | AS21859 | — |
| 103.102.134.0/24 | AS21859 | — |
| 103.103.246.0/24 | AS21859 | — |
| 103.103.247.0/24 | AS21859 | — |
| 103.116.148.0/24 | AS21859 | — |
| 103.122.176.0/24 | AS21859 | — |
| 103.122.177.0/24 | AS21859 | — |
| 103.122.178.0/24 | AS21859 | — |
| 103.122.179.0/24 | AS21859 | — |
| 103.123.242.0/23 | AS21859 | — |
| 103.146.83.0/24 | AS21859 | — |
| 103.149.156.0/23 | AS21859 | — |
| 103.155.100.0/24 | AS21859 | — |
| 103.155.86.0/23 | AS21859 | — |
| 103.156.78.0/23 | AS21859 | — |
| 103.188.121.0/24 | AS21859 | — |
| 103.193.125.0/24 | AS21859 | — |
| 103.193.126.0/24 | AS21859 | — |
| 103.193.127.0/24 | AS21859 | — |
| 103.206.20.0/22 | AS21859 | — |
| 103.206.20.0/24 | AS21859 | — |
| 103.206.21.0/24 | AS21859 | — |
| 103.206.22.0/24 | AS21859 | — |
| 103.206.23.0/24 | AS21859 | — |
| 103.207.165.0/24 | AS21859 | — |
| 103.21.138.0/24 | AS21859 | — |
| 103.215.125.0/24 | AS21859 | — |
| 103.215.126.0/24 | AS21859 | — |
| 103.225.84.0/24 | AS21859 | — |
| 103.225.85.0/24 | AS21859 | — |
| 103.225.86.0/24 | AS21859 | — |
| 103.225.87.0/24 | AS21859 | — |
| 103.229.117.0/24 | AS21859 | — |
| 103.237.100.0/24 | AS21859 | — |
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Related lookups and next steps
Frequently asked questions about this ASN page
What does AS21859 represent?
AS21859 is an autonomous system number. The current source associates it with ZEN-ECN - Zenlayer Inc and the region field an unknown region; those values add network context but do not prove a specific service, physical location, or quality level.
What are peers, upstreams, and prefixes useful for on the AS21859 page?
They help explain the scale, interconnection depth, and route structure of AS21859. Richer peering and upstream data often indicate broader network reach, but they should still be interpreted together with prefixes and related IP landing pages.
What should you do after reviewing AS21859?
Open a concrete IP page to check how the address maps into AS21859, then compare the prefix, source labels, and query time. Verify operator or service claims with the relevant registry or network operator.
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