AS28573
Claro NXT 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
- Multiple-origin (MOAS) routing anomaly −12
- Mobile allocation +2
- Trust score 55 / 100
Experimental · trust-vectors model v1.1.0 — 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 AS28573 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) |
|---|---|---|
| 179.140.0.0/15 | AS4230, AS28573 | 2026-07-18 12:37:44 |
Network profile
Source: PeeringDB →AS28573 — global IP footprint
Cities where AS28573 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 AS28573 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 |
|---|---|---|
| 179.154.120.0/22 | 97,591 | 2026-07-18 12:32:20 |
| 189.4.224.0/21 | 93,135 | 2026-07-18 12:32:19 |
| 179.222.0.0/17 | 81,597 | 2026-07-18 12:32:20 |
| 200.189.88.0/24 | 81,520 | 2026-07-18 12:32:17 |
| 179.157.232.0/23 | 68,758 | 2026-07-18 12:32:20 |
| 187.22.30.0/24 | 68,708 | 2026-07-18 12:32:20 |
| 187.22.31.0/24 | 68,560 | 2026-07-18 12:32:20 |
| 187.22.86.0/24 | 68,524 | 2026-07-18 12:32:20 |
| 179.136.88.0/21 | 64,569 | 2026-07-15 02:43:54 |
| 189.4.232.0/21 | 63,052 | 2026-07-15 02:43:54 |
| 179.155.32.0/19 | 59,278 | 2026-06-29 04:52:26 |
| 187.105.88.0/24 | 56,612 | 2026-07-18 12:32:18 |
| 187.105.89.0/24 | 51,994 | 2026-07-18 12:32:20 |
| 177.180.48.0/20 | 46,905 | 2026-07-18 12:32:17 |
| 177.34.192.0/19 | 46,678 | 2026-07-18 12:32:18 |
| 177.143.0.0/17 | 46,357 | 2026-07-18 12:32:20 |
| 177.35.160.0/19 | 45,364 | 2026-07-18 12:32:21 |
| 187.180.224.0/19 | 44,991 | 2026-07-18 12:32:19 |
| 179.154.192.0/19 | 44,369 | 2026-07-18 12:32:18 |
| 179.152.192.0/19 | 44,100 | 2026-07-18 12:32:18 |
| 191.178.224.0/19 | 43,997 | 2026-07-18 12:32:20 |
| 187.66.224.0/20 | 43,971 | 2026-07-18 12:32:20 |
| 191.188.128.0/17 | 43,891 | 2026-07-18 12:32:20 |
| 187.66.208.0/20 | 43,808 | 2026-07-18 12:32:20 |
| 187.123.224.0/20 | 43,782 | 2026-07-18 12:32:20 |
| 187.2.72.0/21 | 43,690 | 2026-07-18 12:32:20 |
| 187.2.240.0/20 | 43,512 | 2026-07-18 12:32:18 |
| 201.62.101.0/24 | 43,196 | 2026-07-18 12:32:20 |
| 189.55.176.0/20 | 43,139 | 2026-07-18 12:32:18 |
| 187.123.240.0/21 | 43,036 | 2026-07-18 12:30:57 |
| 201.74.176.0/20 | 42,966 | 2026-07-18 12:32:20 |
| 191.187.50.0/24 | 42,791 | 2026-07-18 12:32:20 |
| 191.179.222.0/24 | 41,569 | 2026-07-18 12:01:44 |
| 189.54.250.0/24 | 40,792 | 2026-07-18 12:32:18 |
| 191.186.152.0/21 | 40,521 | 2026-07-18 12:01:44 |
| 191.187.60.0/24 | 40,061 | 2026-07-18 12:32:19 |
| 191.187.48.0/23 | 40,049 | 2026-07-18 12:32:20 |
| 191.187.54.0/24 | 39,884 | 2026-07-18 12:32:19 |
| 186.218.124.0/24 | 39,234 | 2026-07-18 12:01:44 |
| 177.193.248.0/21 | 39,162 | 2026-07-18 12:32:20 |
| 179.157.16.0/21 | 39,128 | 2026-07-18 12:32:20 |
| 189.35.80.0/21 | 39,039 | 2026-07-18 12:32:20 |
| 179.223.76.0/23 | 38,905 | 2026-07-18 12:32:18 |
| 189.7.208.0/21 | 38,870 | 2026-07-18 12:32:20 |
| 177.83.32.0/21 | 38,815 | 2026-07-18 12:32:20 |
| 191.187.32.0/20 | 38,760 | 2026-07-18 12:32:19 |
| 179.233.0.0/20 | 38,585 | 2026-07-18 12:32:18 |
| 187.64.192.0/19 | 38,517 | 2026-07-18 10:52:31 |
| 179.223.34.0/23 | 38,359 | 2026-07-18 12:32:18 |
| 179.223.38.0/23 | 38,328 | 2026-07-18 12:32:20 |
Showing top 50 of 7,608 announced prefixes by sample volume.
Frequently Asked Questions
What is AS28573?
AS28573 is an Autonomous System Number assigned to Claro NXT 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 AS28573 announce?
AS28573 announces 9.96M IPv4 addresses distributed across 273 routed CIDR prefixes. The network is registered in Brazil.
Who operates AS28573?
AS28573 is operated by Claro NXT Telecomunicacoes Ltda. The organization is based in Brazil. You can view all IP ranges and related ASNs on the organization page.
What country is AS28573 registered in?
AS28573 is registered in Brazil. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
