Country
—
ASN LANDING PAGE
AS21559
OSNET - OSNET
Last updated · Apr 4, 2026
Total prefixes
43
IPv4 prefixes
42
IPv6 prefixes
1
ASN summary
How to read the scale of AS21559
OSNET - OSNET currently shows 43 prefixes and 73 upstream, downstream, or peer relationships. Larger prefix inventories often indicate broader network footprint, but they should still be read together with country and peering context.
When is an ASN page most useful?
ASN landing pages are more useful than a single IP page when you want cloud provider attribution, routing research, infrastructure comparison, or network topology analysis at the organization level.
How should you read the country, organization, and role of AS21559?
OSNET - OSNET is currently associated with an unknown region. Country data is only a starting point; the more important signals are the organization name, website, prefix volume, and peering relationships that reveal whether the network behaves like a cloud platform, ISP, CDN, or enterprise backbone.
What should you inspect next after the AS21559 page?
This page is currently showing live ASN data that can be used for peer, prefix, and network scale analysis. The most useful next step is usually to return to a related IP landing page, then compare that concrete address with this ASN profile and with broader topic pages for routing, cloud attribution, or WHOIS ownership analysis.
Search intents this ASN page helps cover
AS21559 ASN lookupAS21559 BGPAS21559 peersAS21559 prefixesAS21559 upstreamsOSNET - OSNET ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
AS271945
AS271945
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AS396502
AS396502
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AS395471
AS395471
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AS399126
AS399126
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AS46868
AS46868
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AS40414
AS40414
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AS62931
AS62931
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AS46941
AS46941
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AS393678
AS393678
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AS36435
AS36435
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AS399881
AS399881
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AS400154
AS400154
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AS54835
AS54835
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AS14534
AS14534
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AS400354
AS400354
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AS63393
AS63393
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AS397399
AS397399
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AS3838
AS3838
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AS393573
AS393573
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AS397072
AS397072
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AS398317
AS398317
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AS6208
AS6208
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AS30294
AS30294
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AS397470
AS397470
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AS399444
AS399444
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AS10524
AS10524
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AS39963
AS39963
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AS399294
AS399294
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AS397359
AS397359
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AS22555
AS22555
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AS396899
AS396899
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AS46869
AS46869
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AS397598
AS397598
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AS396377
AS396377
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AS22109
AS22109
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AS21944
AS21944
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AS27213
AS27213
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AS40880
AS40880
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AS395502
AS395502
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Peers
AS6939
AS6939
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AS174
AS174
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AS3257
AS3257
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AS6762
AS6762
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AS12956
AS12956
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AS1299
AS1299
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AS3303
AS3303
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AS37468
AS37468
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AS137409
AS137409
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AS52320
AS52320
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AS20080
AS20080
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AS64126
AS64126
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AS1828
AS1828
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AS19151
AS19151
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AS36236
AS36236
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AS61573
AS61573
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AS24482
AS24482
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AS13786
AS13786
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AS199524
AS199524
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AS286
AS286
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AS263237
AS263237
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AS263152
AS263152
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AS1031
AS1031
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AS14840
AS14840
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AS264409
AS264409
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AS6204
AS6204
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AS35280
AS35280
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AS37721
AS37721
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AS49544
AS49544
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AS51185
AS51185
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AS60171
AS60171
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AS4230
AS4230
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AS23379
AS23379
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AS58453
AS58453
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Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 104.218.240.0/22 | AS21559 | — |
| 104.218.241.0/24 | AS21559 | — |
| 104.238.192.0/22 | AS21559 | — |
| 104.238.232.0/23 | AS21559 | — |
| 149.18.21.0/24 | AS21559 | — |
| 149.18.39.0/24 | AS21559 | — |
| 154.64.208.0/21 | AS21559 | — |
| 154.64.216.0/21 | AS21559 | — |
| 167.94.224.0/23 | AS21559 | — |
| 167.94.225.0/24 | AS21559 | — |
| 172.93.2.0/23 | AS21559 | — |
| 173.239.206.0/24 | AS21559 | — |
| 173.239.228.0/24 | AS21559 | — |
| 192.228.98.0/23 | AS21559 | — |
| 192.254.109.0/24 | AS21559 | — |
| 192.254.96.0/20 | AS21559 | — |
| 192.254.96.0/24 | AS21559 | — |
| 192.254.97.0/24 | AS21559 | — |
| 198.52.240.0/22 | AS21559 | — |
| 198.52.240.0/24 | AS21559 | — |
| 198.52.241.0/24 | AS21559 | — |
| 199.116.62.0/24 | AS21559 | — |
| 200.5.16.0/20 | AS21559 | — |
| 200.5.22.0/24 | AS21559 | — |
| 200.5.23.0/24 | AS21559 | — |
| 204.77.10.0/23 | AS21559 | — |
| 204.77.11.0/24 | AS21559 | — |
| 208.81.58.0/23 | AS21559 | — |
| 208.81.59.0/24 | AS21559 | — |
| 2604:1cc0::/32 | AS21559 | — |
| 38.107.88.0/21 | AS21559 | — |
| 38.2.160.0/19 | AS21559 | — |
| 38.87.232.0/21 | AS21559 | — |
| 67.206.200.0/21 | AS21559 | — |
| 69.24.197.0/24 | AS21559 | — |
| 69.24.198.0/24 | AS21559 | — |
| 69.24.199.0/24 | AS21559 | — |
| 69.24.200.0/24 | AS21559 | — |
| 72.46.156.0/23 | AS21559 | — |
| 72.46.157.0/24 | AS21559 | — |
Related ASN pages
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AS13335 · Cloudflare
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AS8075 · Microsoft
Helpful when comparing Azure, enterprise backbone, and large-cloud routing patterns.
AS16509 · Amazon
A useful ASN landing page for understanding AWS and large cloud-network ownership.
Related lookups and next steps
WHOIS vs ASN Ownership Guide
Continue from this ASN into the differences between WHOIS ownership and ASN ownership.
Routing Troubleshooting and Network Analysis
Continue from this ASN into route troubleshooting and network analysis.
Cloud Network and ASN Comparison
Useful when you want to compare this ASN against larger cloud and edge networks.
WHOIS and IP Ownership Guide
Continue from the ASN page into WHOIS and ownership verification.
Frequently asked questions about this ASN page
What does AS21559 represent?
AS21559 is an autonomous system number used to identify an independently operated network. The current page associates it with OSNET - OSNET in an unknown region, which helps determine whether it behaves like a cloud provider, ISP, CDN, or enterprise backbone.
What are peers, upstreams, and prefixes useful for on the AS21559 page?
They help explain the scale, interconnection depth, and route structure of AS21559. 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 AS21559?
The best next step is usually to return to a concrete IP landing page to see how a specific address maps into AS21559, then continue into cloud, WHOIS, or routing topic pages to understand the network in a broader context.
Related topics
WHOIS vs ASN Ownership Guide
Understand why WHOIS ownership and ASN ownership can differ, and how to combine both when deciding who really owns or operates an IP.
WHOIS and IP Ownership Guide
Use WHOIS, ASN, prefixes, and organization data to determine who ultimately owns an IP, range, or resolved domain target.
BGP and ASN Basics Guide
Learn what ASN, BGP routes, prefixes, upstreams, downstreams, and peers mean, then explore real ASN pages.
Cloud Network and ASN Comparison
Compare large cloud and edge networks such as Google, Cloudflare, Microsoft, and Amazon through their ASN landing pages.