Country
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ASN LANDING PAGE
AS21453
FLEX-AS - Flex Ltd.
Last updated · Apr 4, 2026
Total prefixes
19
IPv4 prefixes
17
IPv6 prefixes
2
ASN summary
How to read the scale of AS21453
FLEX-AS - Flex Ltd. currently shows 19 prefixes and 53 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 AS21453?
FLEX-AS - Flex Ltd. 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 AS21453 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
AS21453 ASN lookupAS21453 BGPAS21453 peersAS21453 prefixesAS21453 upstreamsFLEX-AS - Flex Ltd. ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
Peers
AS35598
AS35598
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AS28917
AS28917
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AS9002
AS9002
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AS20764
AS20764
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AS3216
AS3216
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AS1299
AS1299
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AS8641
AS8641
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AS29076
AS29076
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AS50182
AS50182
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AS20485
AS20485
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AS25091
AS25091
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AS15958
AS15958
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AS208972
AS208972
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AS13004
AS13004
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AS44901
AS44901
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AS41722
AS41722
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AS47692
AS47692
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AS205112
AS205112
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AS36236
AS36236
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AS3170
AS3170
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AS6939
AS6939
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AS37721
AS37721
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AS49434
AS49434
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AS6204
AS6204
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AS8218
AS8218
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AS24482
AS24482
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AS42295
AS42295
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AS48678
AS48678
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AS137409
AS137409
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AS199524
AS199524
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AS200612
AS200612
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AS209823
AS209823
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AS29049
AS29049
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AS41327
AS41327
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AS6663
AS6663
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AS60171
AS60171
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AS9198
AS9198
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AS28910
AS28910
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AS49673
AS49673
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AS50673
AS50673
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Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 178.167.0.0/17 | AS21453 | — |
| 178.167.0.0/18 | AS21453 | — |
| 178.167.64.0/19 | AS21453 | — |
| 178.167.96.0/19 | AS21453 | — |
| 178.57.224.0/19 | AS21453 | — |
| 185.5.148.0/22 | AS21453 | — |
| 212.7.224.0/19 | AS21453 | — |
| 2a01:4200::/30 | AS21453 | — |
| 2a01:4200::/32 | AS21453 | — |
| 31.31.64.0/21 | AS21453 | — |
| 80.252.128.0/19 | AS21453 | — |
| 80.84.112.0/20 | AS21453 | — |
| 88.84.192.0/19 | AS21453 | — |
| 94.253.0.0/17 | AS21453 | — |
| 94.253.0.0/18 | AS21453 | — |
| 94.253.102.0/23 | AS21453 | — |
| 94.253.2.0/24 | AS21453 | — |
| 94.253.96.0/19 | AS21453 | — |
| 95.183.64.0/18 | AS21453 | — |
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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 AS21453 represent?
AS21453 is an autonomous system number used to identify an independently operated network. The current page associates it with FLEX-AS - Flex Ltd. 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 AS21453 page?
They help explain the scale, interconnection depth, and route structure of AS21453. 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 AS21453?
The best next step is usually to return to a concrete IP landing page to see how a specific address maps into AS21453, 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.