Country
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ASN LANDING PAGE
AS266475
SEM FRONTEIRAS TELECOMUNICACOES LTDA
Last updated · Apr 4, 2026
Total prefixes
40
IPv4 prefixes
26
IPv6 prefixes
14
ASN summary
How to read the scale of AS266475
SEM FRONTEIRAS TELECOMUNICACOES LTDA currently shows 40 prefixes and 34 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 AS266475?
SEM FRONTEIRAS TELECOMUNICACOES LTDA 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 AS266475 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
AS266475 ASN lookupAS266475 BGPAS266475 peersAS266475 prefixesAS266475 upstreamsSEM FRONTEIRAS TELECOMUNICACOES LTDA ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
Peers
AS271253
AS271253
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AS4230
AS4230
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AS264275
AS264275
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AS6939
AS6939
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AS52468
AS52468
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AS199524
AS199524
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AS262253
AS262253
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AS263152
AS263152
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AS1031
AS1031
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AS6057
AS6057
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AS14840
AS14840
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AS53013
AS53013
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AS6424
AS6424
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AS22548
AS22548
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AS24482
AS24482
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AS28624
AS28624
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AS28634
AS28634
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AS29049
AS29049
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AS35280
AS35280
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AS36236
AS36236
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AS39120
AS39120
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AS51185
AS51185
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AS52863
AS52863
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AS52873
AS52873
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AS60503
AS60503
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AS61573
AS61573
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AS198150
AS198150
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AS262427
AS262427
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AS263237
AS263237
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AS264479
AS264479
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Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 170.83.172.0/22 | AS266475 | — |
| 170.83.172.0/24 | AS266475 | — |
| 170.83.173.0/24 | AS266475 | — |
| 170.83.174.0/24 | AS266475 | — |
| 170.83.175.0/24 | AS266475 | — |
| 2804:3868:1600::/39 | AS266475 | — |
| 2804:3868:1a00::/39 | AS266475 | — |
| 2804:3868:200::/39 | AS266475 | — |
| 2804:3868:4000::/34 | AS266475 | — |
| 2804:3868:600::/39 | AS266475 | — |
| 2804:3868:8000::/34 | AS266475 | — |
| 2804:3868::/32 | AS266475 | — |
| 2804:3868::/34 | AS266475 | — |
| 2804:3868:c000::/34 | AS266475 | — |
| 2804:3868:e00::/39 | AS266475 | — |
| 2804:3868:f200::/39 | AS266475 | — |
| 2804:3868:f400::/39 | AS266475 | — |
| 2804:3868:f600::/39 | AS266475 | — |
| 2804:3868:f800::/39 | AS266475 | — |
| 38.191.48.0/20 | AS266475 | — |
| 38.191.48.0/23 | AS266475 | — |
| 38.191.50.0/23 | AS266475 | — |
| 38.191.52.0/23 | AS266475 | — |
| 38.191.54.0/23 | AS266475 | — |
| 38.191.56.0/23 | AS266475 | — |
| 38.191.58.0/23 | AS266475 | — |
| 38.191.60.0/23 | AS266475 | — |
| 38.191.60.0/24 | AS266475 | — |
| 38.191.61.0/24 | AS266475 | — |
| 38.191.62.0/23 | AS266475 | — |
| 38.56.72.0/22 | AS266475 | — |
| 38.56.72.0/24 | AS266475 | — |
| 38.56.73.0/24 | AS266475 | — |
| 38.56.74.0/24 | AS266475 | — |
| 38.56.75.0/24 | AS266475 | — |
| 38.9.112.0/22 | AS266475 | — |
| 38.9.112.0/24 | AS266475 | — |
| 38.9.113.0/24 | AS266475 | — |
| 38.9.114.0/24 | AS266475 | — |
| 38.9.115.0/24 | AS266475 | — |
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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 AS266475 represent?
AS266475 is an autonomous system number used to identify an independently operated network. The current page associates it with SEM FRONTEIRAS TELECOMUNICACOES LTDA 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 AS266475 page?
They help explain the scale, interconnection depth, and route structure of AS266475. 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 AS266475?
The best next step is usually to return to a concrete IP landing page to see how a specific address maps into AS266475, 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.