AS28580
Cilnet Comunicacao e Informatica S.A.
Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Trust score 65 / 100
Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →
Network profile
Source: PeeringDB →Present at 2 internet exchanges: IX.br (PTT.br) Campinas: ATM/MPLA, IX.br (PTT.br) São Paulo: ATM/MPLA
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS28580 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 189.39.88.0/21 | 159,156 | 2026-08-27 03:24:24 |
| 189.39.80.0/21 | 158,742 | 2026-08-27 03:24:24 |
| 45.166.124.0/22 | 93,226 | 2026-11-14 19:29:37 |
| 138.122.68.0/22 | 89,424 | 2026-11-14 19:45:04 |
| 170.247.116.0/22 | 88,199 | 2026-11-14 19:45:04 |
| 143.0.232.0/22 | 88,152 | 2026-11-14 19:45:04 |
| 170.245.20.0/22 | 88,114 | 2026-11-14 19:45:04 |
| 177.101.48.0/20 | 86,232 | 2026-11-14 19:30:58 |
| 189.51.208.0/20 | 86,105 | 2026-11-14 19:29:37 |
| 45.170.140.0/22 | 85,875 | 2026-11-14 19:29:37 |
| 189.28.224.0/20 | 85,819 | 2026-11-14 19:30:58 |
| 187.45.16.0/20 | 85,761 | 2026-11-14 19:30:58 |
| 187.45.0.0/20 | 85,596 | 2026-11-14 19:29:37 |
| 189.28.240.0/20 | 85,496 | 2026-11-14 19:30:58 |
| 200.187.80.0/20 | 85,217 | 2026-11-14 19:30:58 |
| 45.7.204.0/22 | 85,194 | 2026-11-14 19:30:58 |
| 186.224.160.0/19 | 84,989 | 2026-11-14 19:45:03 |
| 186.224.128.0/19 | 84,607 | 2026-11-14 19:45:03 |
| 187.84.0.0/20 | 84,467 | 2026-11-14 19:29:37 |
| 201.46.32.0/20 | 84,144 | 2026-11-14 19:29:37 |
| 201.46.48.0/20 | 83,888 | 2026-11-14 19:29:37 |
| 45.237.16.0/22 | 82,550 | 2026-11-14 19:29:37 |
| 45.224.76.0/22 | 81,697 | 2026-11-14 19:30:58 |
| 187.45.16.0/21 | 80,638 | 2026-08-27 03:24:24 |
| 138.0.180.0/22 | 79,756 | 2026-11-14 19:29:37 |
| 168.194.4.0/22 | 78,440 | 2026-11-14 19:29:37 |
| 168.194.228.0/22 | 78,269 | 2026-11-14 19:30:58 |
| 138.186.180.0/22 | 77,701 | 2026-11-14 19:29:37 |
| 168.90.184.0/22 | 77,525 | 2026-11-14 19:29:37 |
| 177.85.40.0/22 | 76,824 | 2026-11-14 19:29:37 |
| 201.150.100.0/22 | 73,433 | 2026-11-14 19:29:37 |
| 191.253.240.0/20 | 58,608 | 2026-11-14 19:30:58 |
| 187.45.28.0/22 | 52,033 | 2026-11-14 19:29:37 |
| 186.195.176.0/20 | 43,883 | 2026-08-12 03:19:45 |
| 187.45.0.0/21 | 40,364 | 2026-08-27 03:24:24 |
| 186.224.152.0/21 | 35,447 | 2026-08-12 03:33:29 |
| 186.224.136.0/21 | 35,334 | 2026-08-12 03:33:29 |
| 191.253.224.0/20 | 35,334 | 2026-08-12 03:33:29 |
| 186.224.128.0/21 | 35,234 | 2026-08-12 03:33:29 |
| 186.224.144.0/21 | 32,562 | 2026-08-12 03:19:34 |
| 186.224.176.0/20 | 30,830 | 2026-07-30 04:03:51 |
| 186.224.160.0/20 | 30,725 | 2026-07-30 04:03:51 |
| 189.39.92.0/23 | 17,434 | 2026-08-27 03:13:21 |
| 189.39.94.0/23 | 17,340 | 2026-08-27 03:13:21 |
| 189.39.90.0/23 | 17,337 | 2026-08-27 03:13:21 |
| 189.39.82.0/23 | 17,269 | 2026-08-27 03:13:21 |
| 189.39.84.0/23 | 17,250 | 2026-08-27 03:13:21 |
| 189.39.88.0/23 | 17,222 | 2026-08-27 03:13:21 |
| 189.39.86.0/23 | 17,208 | 2026-08-27 03:13:21 |
| 189.39.80.0/23 | 17,178 | 2026-08-27 03:13:21 |
Showing top 50 of 293 announced prefixes by sample volume.
Frequently Asked Questions
What is AS28580?
AS28580 is an Autonomous System Number assigned to Cilnet Comunicacao e Informatica S.A.. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS28580 announce?
AS28580 announces 90.1K IPv4 addresses distributed across 27 routed CIDR prefixes. The network is registered in Brazil.
Who operates AS28580?
AS28580 is operated by Cilnet Comunicacao e Informatica S.A.. The organization is based in Brazil. You can view all IP ranges and related ASNs on the organization page.
What country is AS28580 registered in?
AS28580 is registered in Brazil. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
