AS28573 Claro NXT Telecomunicacoes Ltda
🇧🇷Org handle: 99822
LACNICallocated
Announced Prefixes (BGP)
7,443total
5,458 IPv41,985 IPv6
IPv4 Addresses
Allocated (RIR)684,032
Announced (BGP)14.7M
IPv6 Addresses
Allocated (RIR)0
Announced (BGP)4.5×10²⁸
Prefix Limit (IPv4)
20,000
Prefix Limit (IPv6)
10,000
Country
🇧🇷 BRRIR
LACNICStatus
allocated
Allocated
2003-11-27
Listed on the threat map (2026-10-11)
Large hosting providers appear because attackers rent their servers, not necessarily because of the operator.
Announced Prefixes
(BGP)1,000 of 7,443|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| Valid | Other IRR | 2026-10-10 | |
| Valid | Other IRR | 2026-10-10 | |
| Valid | Other IRR | 2026-10-10 | |
| Valid | Other IRR | 2026-10-10 | |
| Valid | Other IRR | 2026-10-10 | |
| Valid | Other IRR | 2026-10-10 | |
| Valid | Other IRR | 2026-10-10 | |
| Valid | Other IRR | 2026-10-10 | |
| Valid | Other IRR | 2026-10-10 | |
| Valid | Other IRR | 2026-10-10 |
1-10 of 1,000
1 / 100
Allocated Prefixes
(RIR)11Prefix | Country | RIR | Status |
|---|---|---|---|
| 177.235.0.0/16 | 🇧🇷 BR | LACNIC | allocated |
| 179.136.0.0/14 | 🇧🇷 BR | LACNIC | allocated |
| 179.140.0.0/15 | 🇧🇷 BR | LACNIC | allocated |
| 179.142.0.0/15 | 🇧🇷 BR | LACNIC | allocated |
| 189.39.144.0/20 | 🇧🇷 BR | LACNIC | allocated |
| 201.6.0.0/16 | 🇧🇷 BR | LACNIC | allocated |
| 201.46.240.0/20 | 🇧🇷 BR | LACNIC | allocated |
| 201.55.224.0/20 | 🇧🇷 BR | LACNIC | allocated |
| 201.76.16.0/20 | 🇧🇷 BR | LACNIC | allocated |
| 201.76.64.0/19 | 🇧🇷 BR | LACNIC | allocated |
1-10 of 11
1 / 2
All 7,443 announced prefixes of AS28573 →
BGP Neighbours
(seen in AS paths)Upstreams (12)
Networks AS28573 hands its own prefixes to: transit providers, or peers at an exchange.
- AS4230CLARO S.A7,254
- AS137409GSLNETWORKS AP GSL Networks Pty216
- AS61568ALOO TELECOM FSF TECNOLOGIA122
- AS22356Durand Do Brasil Ltda103
- AS16735ALGAR TELECOM84
- AS1916Rede Nacional De Ensino E Pesquisa49
- AS6939Hurricane Electric35
- AS61626UNIVERSIDADE ESTADUAL DE PONTA GROSSA11
- AS53062GGNET TELECOMUNICACOES LTDA10
- AS7195EDGEUNO S.A.S7
- AS6057Administracion Nacional De Telecomunicaciones3
- AS14840BR.Digital Telecom3
Downstreams (1)
Networks whose own prefixes AS28573 passes on: usually its customers.
- AS13335Cloudflare48
ASPA
No ASPA
External Links
Learn more
- What is an ASN?Autonomous systems, ASN ranges and how they are assigned
- RPKI and route origin validationWhat the RPKI badges on the prefix list mean
- ASPA explainedWhy AS28573 should publish an ASPA object
- IPv4 transfers in the LACNIC regionMonthly volume and the latest registry transfers
- ASN data in AI agents and SIEMMCP server and API integrations
API
Open https://api.ipctl.io/v1/asn/28573Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/28573" | jq