Data as of Nov 9, 2026
187.73.128.0/21
No anonymizer space · no proxy exits in 30 daysITIBR - Instituto de Tecnologia Informacao Brasil
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | RPKI |
|---|---|---|---|
| 187.73.130.0/24 since Apr 2020 | AS28576 | Business | |
| 187.73.132.0/24 since Jun 2021 | AS28576 | Business |
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 187.73.128.0/20 | 4,096 | 133520 | ITIBR - Instituto de Tecnologia Informacao Brasil (01915785000195) | allocated | Jul 20, 2009 | abuse@ |
| └ 187.73.130.0/24 | 256 | 458077 | Ctinet Solucoes EM Conectividade e Informatica Ltd (06213287000114) | reassigned | May 21, 2023 | abuse@ |
| └ 187.73.132.0/24 | 256 | 458079 | Ctinet Solucoes EM Conectividade e Informatica Ltd (06213287000114) | reassigned | May 21, 2023 | abuse@ |
Network & registry
Registry
Holder
- Organization
- Not stated by the registry
Origin network
AS28576
BR
- Name
- ITIBR - Instituto de Tecnologia Informacao Brasil
- Type
- Education
- Registered
- Apr 6, 2004
- Domain
- itibr.com.br
- Website
- www.itibr.com.br
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Jan 2017
- Current origin since
- Jan 2017 · 9.8 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 187.73.128.0/21 | AS28576 | /24 | LACNIC | RPKI valid |
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 187.73.128.0/24 | AS28576 | RADB | ITIBR - Instituto de Tecnologia Informacao Brasil | MAINT-AS22356 | Nov 13, 2023 |
| 187.73.129.0/24 | AS28576 | RADB | ITIBR - Instituto de Tecnologia Informacao Brasil | MAINT-AS22356 | Nov 13, 2023 |
| 187.73.131.0/24 | AS28576 | RADB | ITIBR - Instituto de Tecnologia Informacao Brasil | MAINT-AS22356 | Nov 13, 2023 |
| 187.73.133.0/24 | AS28576 | RADB | ITIBR - Instituto de Tecnologia Informacao Brasil | MAINT-AS22356 | Nov 13, 2023 |
| 187.73.134.0/24 | AS28576 | RADB | ITIBR - Instituto de Tecnologia Informacao Brasil | MAINT-AS22356 | Nov 13, 2023 |
| 187.73.135.0/24 | AS28576 | RADB | ITIBR - Instituto de Tecnologia Informacao Brasil | MAINT-AS22356 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 187.
73. 128. 0/ 20 - Netname
- 133520
- Registrant
- ITIBR - Instituto de Tecnologia Informacao Brasil
- Registrant country
- BR
- Organization
- ITIBR - Instituto de Tecnologia Informacao Brasil (01915785000195)
- Handle
- 187.
73. 128. 0/ 20 - Created
- Jul 20, 2009
- RIR
- LACNIC
- Country
- BR
- Delegated
- Jul 20, 2009
- Status
- assigned
Report abuse
Abuse contact
- abuse@
durand. com. br - Name
- Grupo de Segurança Durand
- Handle
- GRSDU7