AS28220
Alares Cabo Servicos de Telecomunicacoes 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
- Multiple-origin (MOAS) routing anomaly −12
- Isp allocation +5
- Trust score 58 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
⚠ 25 MOAS prefixes — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS28220 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.
| Prefix | Origin ASNs | Last detected (UTC) |
|---|---|---|
| 170.0.204.0/22 | AS28220, AS271724 | 2026-07-22 07:23:18 |
| 177.8.48.0/23 | AS28220, AS262493 | 2026-07-22 07:23:18 |
| 189.50.144.0/20 | AS28220, AS271724 | 2026-07-22 07:23:18 |
| 187.108.96.0/20 | AS28220, AS28270 | 2026-07-22 07:23:18 |
| 177.55.58.0/23 | AS28220, AS262493 | 2026-07-22 07:23:18 |
| 138.122.237.0/24 | AS28220, AS28270 | 2026-07-22 07:23:18 |
| 177.55.54.0/23 | AS28220, AS262493 | 2026-07-22 07:23:18 |
| 177.55.60.0/23 | AS28220, AS262493 | 2026-07-22 07:23:18 |
| 187.110.214.0/24 | AS28220, AS271724 | 2026-07-22 01:23:16 |
| 187.110.212.0/24 | AS28220, AS271724 | 2026-07-22 01:23:16 |
| 187.110.209.0/24 | AS28220, AS271724 | 2026-07-22 01:23:16 |
| 187.110.215.0/24 | AS28220, AS271724 | 2026-07-22 01:23:16 |
| 187.110.211.0/24 | AS28220, AS271724 | 2026-07-22 01:23:16 |
| 138.121.220.0/22 | AS28220, AS28270 | 2026-07-22 00:08:16 |
| 138.117.124.0/22 | AS28220, AS271724 | 2026-07-21 04:53:08 |
Showing the 15 most recently detected of 25 MOAS prefixes. Many multi-origin prefixes on large networks are benign (anycast); see all MOAS anomalies.
Network profile
Source: PeeringDB →Present at 4 internet exchanges: IX.br (PTT.br) São Paulo: ATM/MPLA, IX.br (PTT.br) Natal: ATM/MPLA, IX.br (PTT.br) Fortaleza: ATM/MPLA, IX.br (PTT.br) João Pessoa: ATM/MLPA
AS28220 — global IP footprint
Cities where AS28220 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS28220 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 |
|---|---|---|
| 186.236.208.0/21 | 1,973,605 | 2026-07-22 07:13:45 |
| 138.121.220.0/23 | 368,714 | 2026-07-22 06:20:19 |
| 177.130.192.0/19 | 356,141 | 2026-07-22 07:13:43 |
| 138.121.222.0/23 | 346,013 | 2026-07-22 06:20:19 |
| 138.121.220.0/22 | 252,237 | 2026-07-22 07:06:28 |
| 187.110.208.0/24 | 215,341 | 2026-07-21 01:34:45 |
| 187.73.222.0/23 | 204,483 | 2026-07-22 07:03:43 |
| 189.45.16.0/20 | 195,405 | 2026-07-22 07:06:26 |
| 187.86.96.0/20 | 195,197 | 2026-07-22 07:06:26 |
| 191.6.80.0/21 | 189,958 | 2026-07-22 07:06:26 |
| 177.55.60.0/23 | 188,125 | 2026-07-22 07:03:43 |
| 177.55.56.0/23 | 183,829 | 2026-07-22 07:03:43 |
| 177.55.58.0/23 | 183,462 | 2026-07-22 07:03:43 |
| 177.55.54.0/23 | 183,241 | 2026-07-22 07:03:43 |
| 177.55.62.0/23 | 183,212 | 2026-07-22 07:03:43 |
| 177.55.52.0/23 | 182,981 | 2026-07-22 07:03:43 |
| 177.55.48.0/23 | 182,743 | 2026-07-22 07:03:43 |
| 177.8.48.0/23 | 182,704 | 2026-07-22 07:03:43 |
| 177.137.192.0/20 | 174,310 | 2026-07-22 07:11:54 |
| 45.4.64.0/22 | 156,901 | 2026-07-22 07:11:54 |
| 187.18.160.0/21 | 153,270 | 2026-07-22 07:13:50 |
| 186.193.96.0/20 | 142,554 | 2026-07-22 07:06:29 |
| 200.233.80.0/20 | 139,580 | 2026-07-22 07:06:29 |
| 189.124.240.0/21 | 131,610 | 2026-07-22 07:04:54 |
| 189.124.200.0/21 | 131,539 | 2026-07-22 07:04:54 |
| 187.61.224.0/21 | 131,485 | 2026-07-22 07:04:54 |
| 189.124.156.0/22 | 131,415 | 2026-07-22 07:04:54 |
| 179.190.208.0/21 | 131,379 | 2026-07-22 07:04:54 |
| 189.124.143.0/24 | 131,315 | 2026-07-22 07:04:54 |
| 187.61.180.0/22 | 131,223 | 2026-07-22 07:04:54 |
| 189.124.142.0/24 | 131,142 | 2026-07-22 07:04:54 |
| 187.61.191.0/24 | 130,968 | 2026-07-22 07:04:54 |
| 177.89.248.0/21 | 130,659 | 2026-07-22 07:04:54 |
| 179.190.128.0/17 | 130,189 | 2026-07-22 07:13:41 |
| 177.89.0.0/16 | 128,025 | 2026-07-22 07:13:50 |
| 189.124.140.0/24 | 125,184 | 2026-07-22 07:04:54 |
| 177.55.50.0/23 | 118,311 | 2026-07-22 07:03:43 |
| 187.110.209.0/24 | 113,424 | 2026-07-21 01:34:45 |
| 187.110.215.0/24 | 113,399 | 2026-07-21 01:34:45 |
| 187.110.210.0/24 | 113,351 | 2026-07-21 01:34:45 |
| 187.110.214.0/24 | 113,312 | 2026-07-21 01:34:45 |
| 187.110.213.0/24 | 113,308 | 2026-07-21 01:34:45 |
| 187.110.211.0/24 | 113,265 | 2026-07-21 01:34:45 |
| 187.110.212.0/24 | 113,236 | 2026-07-21 01:34:45 |
| 189.124.137.0/24 | 110,026 | 2026-07-22 07:04:54 |
| 179.190.128.0/24 | 108,777 | 2026-07-22 07:06:30 |
| 189.124.128.0/17 | 108,326 | 2026-07-22 07:13:50 |
| 187.111.224.0/19 | 108,209 | 2026-07-22 07:13:50 |
| 177.55.48.0/20 | 107,123 | 2026-07-22 07:03:43 |
| 187.61.192.0/18 | 106,940 | 2026-07-22 07:13:41 |
Showing top 50 of 441 announced prefixes by sample volume.
Frequently Asked Questions
What is AS28220?
AS28220 is an Autonomous System Number assigned to Alares Cabo Servicos de Telecomunicacoes 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 AS28220 announce?
AS28220 announces 308.5K IPv4 addresses distributed across 63 routed CIDR prefixes. The network is registered in Brazil.
Who operates AS28220?
AS28220 is operated by Alares Cabo Servicos de Telecomunicacoes S.A.. The organization is based in Brazil. You can view all IP ranges and related ASNs on the organization page.
What country is AS28220 registered in?
AS28220 is registered in Brazil. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
