Country
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ASN LANDING PAGE
AS25577
C4L-AS - MAINFRAME & CYBERNETIC SYSTEMS LIMITED
Last updated · Apr 4, 2026
Total prefixes
53
IPv4 prefixes
52
IPv6 prefixes
1
ASN summary
How to read the scale of AS25577
C4L-AS - MAINFRAME & CYBERNETIC SYSTEMS LIMITED currently shows 53 prefixes and 51 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 AS25577?
C4L-AS - MAINFRAME & CYBERNETIC SYSTEMS LIMITED 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 AS25577 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
AS25577 ASN lookupAS25577 BGPAS25577 peersAS25577 prefixesAS25577 upstreamsC4L-AS - MAINFRAME & CYBERNETIC SYSTEMS LIMITED ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
Peers
AS3257
AS3257
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AS6939
AS6939
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AS205434
AS205434
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AS13030
AS13030
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AS34927
AS34927
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AS39351
AS39351
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AS4455
AS4455
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AS20562
AS20562
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AS35266
AS35266
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AS6667
AS6667
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AS7195
AS7195
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AS917
AS917
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AS6894
AS6894
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AS8426
AS8426
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AS48185
AS48185
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AS137409
AS137409
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AS6204
AS6204
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AS7575
AS7575
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AS14840
AS14840
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AS28792
AS28792
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AS29049
AS29049
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AS31742
AS31742
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AS37721
AS37721
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AS39122
AS39122
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AS48070
AS48070
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AS215638
AS215638
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AS286
AS286
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AS1828
AS1828
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AS9044
AS9044
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AS15412
AS15412
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AS15802
AS15802
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AS24482
AS24482
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AS36236
AS36236
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AS49544
AS49544
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AS50300
AS50300
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AS62167
AS62167
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AS198150
AS198150
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AS212483
AS212483
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AS3741
AS3741
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AS42473
AS42473
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Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 109.104.100.0/23 | AS25577 | — |
| 109.104.105.0/24 | AS25577 | — |
| 109.104.112.0/24 | AS25577 | — |
| 109.104.114.0/24 | AS25577 | — |
| 109.104.116.0/22 | AS25577 | — |
| 109.104.120.0/21 | AS25577 | — |
| 109.104.122.0/23 | AS25577 | — |
| 109.104.124.0/22 | AS25577 | — |
| 109.104.96.0/23 | AS25577 | — |
| 109.104.98.0/24 | AS25577 | — |
| 109.68.64.0/23 | AS25577 | — |
| 109.68.68.0/24 | AS25577 | — |
| 178.251.233.0/24 | AS25577 | — |
| 178.251.239.0/24 | AS25577 | — |
| 185.229.20.0/23 | AS25577 | — |
| 185.5.88.0/22 | AS25577 | — |
| 2001:9d8::/32 | AS25577 | — |
| 31.3.208.0/24 | AS25577 | — |
| 31.3.211.0/24 | AS25577 | — |
| 31.3.212.0/23 | AS25577 | — |
| 31.3.221.0/24 | AS25577 | — |
| 31.3.223.0/24 | AS25577 | — |
| 37.58.24.0/22 | AS25577 | — |
| 37.58.29.0/24 | AS25577 | — |
| 5.133.184.0/22 | AS25577 | — |
| 5.133.188.0/23 | AS25577 | — |
| 5.133.191.0/24 | AS25577 | — |
| 62.69.143.0/24 | AS25577 | — |
| 77.73.11.0/24 | AS25577 | — |
| 77.73.15.0/24 | AS25577 | — |
| 78.40.56.0/23 | AS25577 | — |
| 78.40.61.0/24 | AS25577 | — |
| 81.27.64.0/24 | AS25577 | — |
| 81.27.66.0/23 | AS25577 | — |
| 81.27.72.0/23 | AS25577 | — |
| 81.27.75.0/24 | AS25577 | — |
| 81.27.76.0/24 | AS25577 | — |
| 81.27.80.0/22 | AS25577 | — |
| 81.27.87.0/24 | AS25577 | — |
| 81.27.88.0/21 | AS25577 | — |
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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 AS25577 represent?
AS25577 is an autonomous system number used to identify an independently operated network. The current page associates it with C4L-AS - MAINFRAME & CYBERNETIC SYSTEMS LIMITED 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 AS25577 page?
They help explain the scale, interconnection depth, and route structure of AS25577. 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 AS25577?
The best next step is usually to return to a concrete IP landing page to see how a specific address maps into AS25577, 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.