AS28158
Ampernet Telecomunicacoes Ltda
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
- Active-threat / abuse risk −12
- Isp allocation +5
- Trust score 58 / 100
Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →
⚠ 1 MOAS prefix — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS28158 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) |
|---|---|---|
| 45.234.0.0/22 | AS28158, AS267335 | 2026-10-12 10:58:43 |
Network profile
Source: PeeringDB →Present at 7 internet exchanges: IX.br (PTT.br) São Paulo: ATM/MPLA, IX.br (PTT.br) Curitiba: ATM/MPLA, IX.br (PTT.br) Foz do Iguaçu: ATM/MLPA, Equinix São Paulo: Equinix IX - SP Metro, IX.br (PTT.br) Cascavel: Main, IX.br (PTT.br) Maringá: ATM/MPLA, PIT Paraguay
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS28158 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 |
|---|---|---|
| 45.189.147.0/24 | 230,022 | 2026-10-12 08:20:24 |
| 45.189.144.0/22 | 229,022 | 2026-10-12 10:55:44 |
| 170.246.192.0/22 | 222,193 | 2026-10-12 10:55:44 |
| 177.23.192.0/21 | 221,025 | 2026-10-12 10:55:44 |
| 177.129.120.0/22 | 219,456 | 2026-10-12 10:56:01 |
| 45.238.68.0/22 | 128,248 | 2026-10-12 10:55:44 |
| 45.162.40.0/22 | 80,625 | 2026-10-12 08:20:25 |
| 138.97.8.0/22 | 77,460 | 2026-10-12 08:20:48 |
| 177.101.128.0/22 | 76,392 | 2026-10-12 08:22:15 |
| 187.60.208.0/22 | 74,859 | 2026-10-12 08:22:15 |
| 187.60.212.0/22 | 50,964 | 2026-10-12 09:07:30 |
| 177.101.136.0/22 | 50,929 | 2026-10-12 08:22:15 |
| 187.60.220.0/22 | 50,670 | 2026-10-12 08:22:15 |
| 187.60.216.0/22 | 50,320 | 2026-10-12 08:22:15 |
| 170.84.160.0/22 | 48,064 | 2026-10-12 10:23:31 |
| 177.101.140.0/22 | 47,935 | 2026-10-12 09:07:26 |
| 187.109.96.0/22 | 47,176 | 2026-10-12 08:22:15 |
| 187.120.232.0/22 | 47,133 | 2026-10-12 08:22:15 |
| 187.109.104.0/22 | 47,099 | 2026-10-12 08:22:15 |
| 187.109.100.0/22 | 47,088 | 2026-10-12 08:22:15 |
| 187.120.236.0/22 | 46,849 | 2026-10-12 08:22:15 |
| 187.109.108.0/22 | 46,830 | 2026-10-12 08:22:15 |
| 177.101.132.0/22 | 42,865 | 2026-10-12 08:22:14 |
| 45.234.0.0/22 | 38,657 | 2026-10-12 10:55:47 |
| 170.83.105.0/24 | 35,522 | 2026-10-07 00:21:28 |
| 170.83.104.0/22 | 25,646 | 2026-10-12 10:02:30 |
| 187.109.110.0/24 | 23,666 | 2026-10-07 00:21:28 |
| 177.129.122.0/23 | 8,248 | 2026-10-12 09:07:31 |
| 170.246.194.0/23 | 7,933 | 2026-10-12 08:04:31 |
| 177.129.120.0/23 | 7,875 | 2026-10-12 08:04:31 |
| 177.129.123.0/24 | 6,478 | 2026-10-12 09:07:27 |
| 45.238.68.0/23 | 5,359 | 2026-10-12 08:04:02 |
| 45.238.70.0/23 | 5,352 | 2026-10-12 08:04:02 |
| 187.60.212.0/23 | 5,290 | 2026-10-12 09:07:27 |
| 187.60.210.0/23 | 5,097 | 2026-10-12 07:42:37 |
| 187.60.208.0/23 | 5,058 | 2026-10-12 07:42:37 |
| 187.60.214.0/23 | 5,049 | 2026-10-12 07:42:37 |
| 177.101.132.0/23 | 5,038 | 2026-10-12 07:42:37 |
| 177.101.130.0/23 | 4,990 | 2026-10-12 07:42:37 |
| 177.101.134.0/23 | 4,983 | 2026-10-12 07:42:37 |
| 187.60.210.0/24 | 4,980 | 2026-10-10 05:15:43 |
| 177.101.128.0/23 | 4,971 | 2026-10-12 07:42:37 |
| 170.84.160.0/23 | 4,971 | 2026-10-12 10:23:31 |
| 138.97.8.0/24 | 4,780 | 2026-10-12 07:42:37 |
| 177.101.138.0/23 | 4,272 | 2026-10-12 07:42:37 |
| 187.60.216.0/23 | 4,260 | 2026-10-12 07:42:37 |
| 187.60.222.0/24 | 4,228 | 2026-10-12 07:42:37 |
| 177.101.140.0/23 | 4,203 | 2026-10-12 09:07:30 |
| 187.60.220.0/23 | 4,188 | 2026-10-12 07:42:37 |
| 177.101.136.0/23 | 4,169 | 2026-10-12 07:42:37 |
Showing top 50 of 98 announced prefixes by sample volume.
Frequently Asked Questions
What is AS28158?
AS28158 is an Autonomous System Number assigned to Ampernet Telecomunicacoes Ltda. 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 AS28158 announce?
AS28158 announces 25.6K IPv4 addresses distributed across 14 routed CIDR prefixes. The network is registered in Brazil.
Who operates AS28158?
AS28158 is operated by Ampernet Telecomunicacoes Ltda. The organization is based in Brazil. You can view all IP ranges and related ASNs on the organization page.
What country is AS28158 registered in?
AS28158 is registered in Brazil. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
