Country
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ASN LANDING PAGE
AS21738
ROZINT - Rozint
Last updated · Jul 20, 2026
Total prefixes
11
IPv4 prefixes
5
IPv6 prefixes
6
ASN summary
How to read the scale of AS21738
ROZINT - Rozint currently reports 11 prefixes and 39 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?
ROZINT - Rozint 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 AS21738 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
AS21738 ASN lookupAS21738 BGPAS21738 peersAS21738 prefixesAS21738 upstreamsROZINT - Rozint ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
AS212895
AS212895
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AS401710
AS401710
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AS151349
AS151349
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AS6517
AS6517
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AS53388
AS53388
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AS402247
AS402247
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AS14923
AS14923
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AS30114
AS30114
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AS400451
AS400451
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AS270142
AS270142
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AS26006
AS26006
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AS216052
AS216052
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AS216242
AS216242
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AS214430
AS214430
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AS202340
AS202340
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AS399542
AS399542
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AS54852
AS54852
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AS58057
AS58057
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AS200160
AS200160
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AS30690
AS30690
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AS200242
AS200242
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AS23459
AS23459
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AS207852
AS207852
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AS213880
AS213880
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AS54148
AS54148
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AS216107
AS216107
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AS200690
AS200690
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AS47689
AS47689
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AS210250
AS210250
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Peers
Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 140.235.156.0/24 | AS21738 | — |
| 216.40.92.0/22 | AS21738 | — |
| 23.150.40.0/24 | AS21738 | — |
| 23.150.41.0/24 | AS21738 | — |
| 2602:2b7:40::/48 | AS21738 | — |
| 2602:2b7:600::/48 | AS21738 | — |
| 2602:2b7:c00::/40 | AS21738 | — |
| 2602:2b7:c8::/48 | AS21738 | — |
| 2602:2b7:d00::/40 | AS21738 | — |
| 2602:2b7:e1::/48 | AS21738 | — |
| 43.255.189.0/24 | AS21738 | — |
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Related lookups and next steps
Frequently asked questions about this ASN page
What does AS21738 represent?
AS21738 is an autonomous system number. The current source associates it with ROZINT - Rozint 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 AS21738 page?
They help explain the scale, interconnection depth, and route structure of AS21738. 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 AS21738?
Open a concrete IP page to check how the address maps into AS21738, 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.