Country
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ASN LANDING PAGE
AS13977
CTELCO - Fidium
Last updated · Apr 4, 2026
Total prefixes
813
IPv4 prefixes
805
IPv6 prefixes
8
ASN summary
How to read the scale of AS13977
CTELCO - Fidium currently shows 813 prefixes and 44 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 AS13977?
CTELCO - Fidium 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 AS13977 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
AS13977 ASN lookupAS13977 BGPAS13977 peersAS13977 prefixesAS13977 upstreamsCTELCO - Fidium ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
AS399353
AS399353
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AS32645
AS32645
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AS401455
AS401455
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AS400848
AS400848
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AS55128
AS55128
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AS13673
AS13673
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AS13672
AS13672
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AS394653
AS394653
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AS14437
AS14437
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AS33555
AS33555
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AS54257
AS54257
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AS395001
AS395001
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AS396437
AS396437
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AS17152
AS17152
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AS401340
AS401340
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AS22270
AS22270
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AS40229
AS40229
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AS63281
AS63281
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AS397145
AS397145
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AS394632
AS394632
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AS46925
AS46925
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AS30034
AS30034
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AS53784
AS53784
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AS53322
AS53322
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AS14635
AS14635
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AS40737
AS40737
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AS26440
AS26440
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AS36501
AS36501
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AS397398
AS397398
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AS6248
AS6248
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AS55175
AS55175
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AS394174
AS394174
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AS14671
AS14671
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AS395342
AS395342
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AS400893
AS400893
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AS32508
AS32508
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AS33422
AS33422
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AS26372
AS26372
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AS25937
AS25937
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AS11197
AS11197
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Peers
Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 104.166.48.0/23 | AS13977 | — |
| 136.175.84.0/22 | AS13977 | — |
| 139.64.154.0/24 | AS13977 | — |
| 142.202.11.0/24 | AS13977 | — |
| 142.202.88.0/24 | AS13977 | — |
| 161.129.29.0/24 | AS13977 | — |
| 163.252.0.0/16 | AS13977 | — |
| 163.252.0.0/17 | AS13977 | — |
| 163.252.128.0/20 | AS13977 | — |
| 163.252.144.0/22 | AS13977 | — |
| 163.252.148.0/22 | AS13977 | — |
| 163.252.152.0/22 | AS13977 | — |
| 163.252.156.0/23 | AS13977 | — |
| 163.252.158.0/23 | AS13977 | — |
| 163.252.160.0/22 | AS13977 | — |
| 163.252.164.0/22 | AS13977 | — |
| 163.252.168.0/22 | AS13977 | — |
| 163.252.172.0/23 | AS13977 | — |
| 163.252.176.0/20 | AS13977 | — |
| 163.252.192.0/18 | AS13977 | — |
| 192.129.78.0/24 | AS13977 | — |
| 199.254.156.0/24 | AS13977 | — |
| 208.82.76.0/24 | AS13977 | — |
| 208.82.77.0/24 | AS13977 | — |
| 209.105.134.0/23 | AS13977 | — |
| 216.212.0.0/17 | AS13977 | — |
| 216.212.0.0/18 | AS13977 | — |
| 216.212.64.0/21 | AS13977 | — |
| 216.212.72.0/21 | AS13977 | — |
| 216.212.80.0/20 | AS13977 | — |
| 216.212.96.0/19 | AS13977 | — |
| 216.227.64.0/22 | AS13977 | — |
| 216.227.68.0/23 | AS13977 | — |
| 216.227.71.0/24 | AS13977 | — |
| 216.227.77.0/24 | AS13977 | — |
| 216.227.84.0/24 | AS13977 | — |
| 2604:6e00:100::/48 | AS13977 | — |
| 2604:6e00:2000::/36 | AS13977 | — |
| 2604:6e00:2400::/38 | AS13977 | — |
| 2604:6e00:300::/48 | AS13977 | — |
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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 AS13977 represent?
AS13977 is an autonomous system number used to identify an independently operated network. The current page associates it with CTELCO - Fidium 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 AS13977 page?
They help explain the scale, interconnection depth, and route structure of AS13977. 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 AS13977?
The best next step is usually to return to a concrete IP landing page to see how a specific address maps into AS13977, 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.