Country
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ASN LANDING PAGE
AS204921
YunZheng-Network zhenyun sun
Last updated · Jul 20, 2026
Total prefixes
14
IPv4 prefixes
2
IPv6 prefixes
12
ASN summary
How to read the scale of AS204921
YunZheng-Network zhenyun sun currently reports 14 prefixes and 42 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?
YunZheng-Network zhenyun sun 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 AS204921 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
AS204921 ASN lookupAS204921 BGPAS204921 peersAS204921 prefixesAS204921 upstreamsYunZheng-Network zhenyun sun ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
Peers
AS18423
AS18423
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AS6939
AS6939
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AS36530
AS36530
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AS44324
AS44324
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AS216211
AS216211
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AS140096
AS140096
—
AS11421
AS11421
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AS204844
AS204844
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AS199310
AS199310
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AS51087
AS51087
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AS40792
AS40792
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AS204211
AS204211
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AS17408
AS17408
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AS25091
AS25091
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AS7721
AS7721
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AS24482
AS24482
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AS34549
AS34549
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AS8298
AS8298
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AS14840
AS14840
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AS3214
AS3214
—
AS10133
AS10133
—
AS18041
AS18041
—
AS31500
AS31500
—
AS34872
AS34872
—
AS38855
AS38855
—
AS42541
AS42541
—
AS48646
AS48646
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AS51185
AS51185
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AS58299
AS58299
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AS59105
AS59105
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AS59891
AS59891
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AS198150
AS198150
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AS205794
AS205794
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AS206499
AS206499
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AS207705
AS207705
—
AS210937
AS210937
—
AS212483
AS212483
—
AS213151
AS213151
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AS215628
AS215628
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Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 142.249.114.0/24 | AS204921 | — |
| 142.249.115.0/24 | AS204921 | — |
| 2a0e:aa07:e250::/44 | AS204921 | — |
| 2a0e:aa07:e251::/48 | AS204921 | — |
| 2a0e:aa07:e252::/48 | AS204921 | — |
| 2a0e:aa07:e253::/48 | AS204921 | — |
| 2a0e:aa07:e254::/48 | AS204921 | — |
| 2a0e:aa07:e256::/48 | AS204921 | — |
| 2a0e:aa07:e258::/48 | AS204921 | — |
| 2a0e:aa07:e259::/48 | AS204921 | — |
| 2a12:cb41:801::/48 | AS204921 | — |
| 2a12:cb41:802::/48 | AS204921 | — |
| 2a12:cb41:803::/48 | AS204921 | — |
| 2a12:cb41:804::/48 | AS204921 | — |
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Related lookups and next steps
Frequently asked questions about this ASN page
What does AS204921 represent?
AS204921 is an autonomous system number. The current source associates it with YunZheng-Network zhenyun sun 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 AS204921 page?
They help explain the scale, interconnection depth, and route structure of AS204921. 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 AS204921?
Open a concrete IP page to check how the address maps into AS204921, then compare the prefix, source labels, and query time. Verify operator or service claims with the relevant registry or network operator.
Related topics
BGP and ASN Basics Guide
Use real IP and ASN pages to understand ASNs, BGP prefixes, peers, upstreams, and downstreams, including the limits of each snapshot.
Routing Troubleshooting and Network Analysis
Build troubleshooting context from an IP, BGP prefix, ASN, and public network relationships without treating static route data as a packet path.
Cloud Network and ASN Comparison
Compare representative cloud and edge networks by ASN, announced prefixes, peers, upstreams, and downstreams without inferring a specific host or customer workload.