FORT Monitor | Announcements and validity status by prefix

View announcements and validity status by prefix

Here you can find information on the validity status of a specific prefix. The announcements collected by the tool are listed grouped by day, prefix, origin AS and along with their classification.

ROAs

Prefix : 187.73.192.0/19

Valid origin : 53054

Max length : 19

Prefix : 187.73.196.0/22

Valid origin : 28220 Alares Cabo Servicos de Telecomunicacoes S.A.

Max length : 22

Prefix : 187.73.198.0/23

Valid origin : 28220 Alares Cabo Servicos de Telecomunicacoes S.A.

Max length : 23

Prefix : 187.73.192.0/19

Valid origin : 28220 Alares Cabo Servicos de Telecomunicacoes S.A.

Max length : 19

Prefix : 187.73.192.0/20

Valid origin : 28220 Alares Cabo Servicos de Telecomunicacoes S.A.

Max length : 20

Prefix : 187.73.192.0/19

Valid origin : 28220 Alares Cabo Servicos de Telecomunicacoes S.A.

Max length : 24

Prefix : 187.73.192.0/19

Valid origin : 53054

Max length : 24

Prefix : 187.73.192.0/20

Valid origin : 28220 Alares Cabo Servicos de Telecomunicacoes S.A.

Max length : 24

For more information, go to LACNIC Inforedes.

The table shows up to 500 results collected by the application, including last month information.

Date	Prefix	Origin AS	Classification
Feb 28, 2026	187.73.198.0/24	ASN 262493	RPKI-invalid origin
Feb 27, 2026	187.73.198.0/24	ASN 262493	RPKI-invalid origin
Feb 26, 2026	187.73.198.0/24	ASN 262493	RPKI-invalid origin
Feb 25, 2026	187.73.198.0/24	ASN 262493	RPKI-invalid origin
Feb 24, 2026	187.73.198.0/24	ASN 262493	RPKI-invalid origin
Feb 23, 2026	187.73.198.0/24	ASN 262493	RPKI-invalid origin
Feb 22, 2026	187.73.198.0/24	ASN 262493	RPKI-invalid origin
Feb 21, 2026	187.73.198.0/24	ASN 262493	RPKI-invalid origin
Feb 20, 2026	187.73.198.0/24	ASN 262493	RPKI-invalid origin