Data as of Nov 14, 2026
187.21.63.0/24
No anonymizer space · no proxy exits in 30 daysClaro NXT Telecomunicacoes Ltda
Network & registry
Announced by
Covering announcement 187.21.48.0/20
- Prefix
- 187.21.48.0/20
- Announced by
- AS28573 Claro NXT Telecomunicacoes Ltda
- Type
- Residential
- Proxy exits
- 149
- Always-on exits
- 11
- RPKI
- RPKI valid
- Netname
- 122419
- Registrant
- Claro NXT Telecomunicacoes Ltda
- RIR
- LACNIC
IPv4 market
Holder
- Organization
- Not stated by the registry
Origin network
AS28573
BR
- Name
- Claro NXT Telecomunicacoes Ltda
- Type
- Internet provider
- Registered
- Nov 27, 2003
- Domain
- claro.com.br
- Website
- www.claro.com.br/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 187.21.48.0/20
187.21.48.0/20
Routing history
- Pattern
- Stable
- First seen
- Sep 2009
- Current origin since
- Jul 2019 · 7.4 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 187.20.0.0/14 | AS28573 | /24 | LACNIC | RPKI valid |
IRR
Route objects on 187.21.48.0/20
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS28573 | RADB | CLARO S.A. Customer | MAINT-AS4230 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 187.
20. 0. 0/ 14 - Netname
- 122419
- Registrant
- Claro NXT Telecomunicacoes Ltda
- Registrant country
- BR
- Organization
- Claro NXT Telecomunicacoes Ltda (66970229000167)
- Handle
- 187.
20. 0. 0/ 14 - Created
- Oct 3, 2008
- RIR
- LACNIC
- Country
- BR
- Delegated
- Oct 3, 2008
- Status
- assigned