Country
—
ASN LANDING PAGE
AS28580
AS28580 - Cilnet Comunicacao e Informatica S.A.
Last updated · Jul 20, 2026
Total prefixes
318
IPv4 prefixes
293
IPv6 prefixes
25
ASN summary
How to read the scale of AS28580
AS28580 - Cilnet Comunicacao e Informatica S.A. currently reports 318 prefixes and 41 upstream, downstream, or peer relationships. These counts describe the current dataset; they do not by themselves prove network quality, reach, or service use.
What can an ASN page answer?
An ASN page shows the public organization label, country or region, BGP prefixes, and available peer and upstream relationships. It adds network context but cannot confirm a website host, physical facility, security status, or service quality.
How should you read the organization and region fields?
AS28580 - Cilnet Comunicacao e Informatica S.A. is currently associated with an unknown region. These values come from public network sources and are useful lookup clues; an organization label, registration region, and actual service location may differ.
How should you verify the AS28580 result?
The page shows ASN data returned by the current upstream query; interpret it with the update time. Open representative IP pages from the same network and compare prefixes, source labels, and query times. Verify operator or service claims with the relevant registry or network operator.
How to verify this ASN result
AS28580 ASN lookupAS28580 BGPAS28580 peersAS28580 prefixesAS28580 upstreamsAS28580 - Cilnet Comunicacao e Informatica S.A. ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
Peers
AS37468
AS37468
—
AS3356
AS3356
—
AS6939
AS6939
—
AS28649
AS28649
—
AS35280
AS35280
—
AS137409
AS137409
—
AS6057
AS6057
—
AS28634
AS28634
—
AS36236
AS36236
—
AS199524
AS199524
—
AS262427
AS262427
—
AS263152
AS263152
—
AS263237
AS263237
—
AS264479
AS264479
—
AS271253
AS271253
—
AS22548
AS22548
—
AS24482
AS24482
—
AS51185
AS51185
—
AS52873
AS52873
—
AS60503
AS60503
—
AS198150
AS198150
—
AS61573
AS61573
—
AS7195
AS7195
—
AS28624
AS28624
—
AS39120
AS39120
—
AS52320
AS52320
—
AS61626
AS61626
—
AS7713
AS7713
—
AS14840
AS14840
—
AS37721
AS37721
—
AS61855
AS61855
—
AS262287
AS262287
—
AS266462
AS266462
—
AS267976
AS267976
—
AS268989
AS268989
—
Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 138.0.180.0/22 | AS28580 | — |
| 138.0.180.0/23 | AS28580 | — |
| 138.0.180.0/24 | AS28580 | — |
| 138.0.181.0/24 | AS28580 | — |
| 138.0.182.0/23 | AS28580 | — |
| 138.0.182.0/24 | AS28580 | — |
| 138.0.183.0/24 | AS28580 | — |
| 138.122.68.0/22 | AS28580 | — |
| 138.122.68.0/23 | AS28580 | — |
| 138.122.68.0/24 | AS28580 | — |
| 138.122.69.0/24 | AS28580 | — |
| 138.122.70.0/23 | AS28580 | — |
| 138.122.70.0/24 | AS28580 | — |
| 138.122.71.0/24 | AS28580 | — |
| 138.186.180.0/22 | AS28580 | — |
| 138.186.180.0/23 | AS28580 | — |
| 138.186.180.0/24 | AS28580 | — |
| 138.186.181.0/24 | AS28580 | — |
| 138.186.182.0/23 | AS28580 | — |
| 138.186.182.0/24 | AS28580 | — |
| 138.186.183.0/24 | AS28580 | — |
| 143.0.232.0/22 | AS28580 | — |
| 168.194.228.0/22 | AS28580 | — |
| 168.194.228.0/23 | AS28580 | — |
| 168.194.228.0/24 | AS28580 | — |
| 168.194.229.0/24 | AS28580 | — |
| 168.194.230.0/23 | AS28580 | — |
| 168.194.230.0/24 | AS28580 | — |
| 168.194.231.0/24 | AS28580 | — |
| 168.194.4.0/22 | AS28580 | — |
| 168.194.4.0/23 | AS28580 | — |
| 168.194.4.0/24 | AS28580 | — |
| 168.194.5.0/24 | AS28580 | — |
| 168.194.6.0/23 | AS28580 | — |
| 168.194.6.0/24 | AS28580 | — |
| 168.194.7.0/24 | AS28580 | — |
| 168.90.184.0/22 | AS28580 | — |
| 168.90.184.0/23 | AS28580 | — |
| 168.90.184.0/24 | AS28580 | — |
| 168.90.185.0/24 | AS28580 | — |
Related ASN pages
AS15169 · Google
Review Google network organization fields, prefixes, peers, upstreams, and downstreams.
AS13335 · Cloudflare
Review Cloudflare network organization fields, prefixes, peers, upstreams, and downstreams.
AS8075 · Microsoft
Review Microsoft network organization fields, prefixes, peers, upstreams, and downstreams.
AS16509 · Amazon
Review Amazon network organization fields, prefixes, peers, upstreams, and downstreams.
Related lookups and next steps
Frequently asked questions about this ASN page
What does AS28580 represent?
AS28580 is an autonomous system number. The current source associates it with AS28580 - Cilnet Comunicacao e Informatica S.A. and the region field an unknown region; those values add network context but do not prove a specific service, physical location, or quality level.
What are peers, upstreams, and prefixes useful for on the AS28580 page?
They help explain the scale, interconnection depth, and route structure of AS28580. 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 AS28580?
Open a concrete IP page to check how the address maps into AS28580, then compare the prefix, source labels, and query time. Verify operator or service claims with the relevant registry or network operator.
Related topics
BGP and ASN Basics Guide
Use real IP and ASN pages to understand ASNs, BGP prefixes, peers, upstreams, and downstreams, including the limits of each snapshot.
Routing Troubleshooting and Network Analysis
Build troubleshooting context from an IP, BGP prefix, ASN, and public network relationships without treating static route data as a packet path.
Cloud Network and ASN Comparison
Compare representative cloud and edge networks by ASN, announced prefixes, peers, upstreams, and downstreams without inferring a specific host or customer workload.