AS28657 — AS28657 - MD Brasil - Tecnologia da Informacao Ltda

AS28657 announces 1 IPv4 prefixes covering 1,024 addresses and 2 IPv6 prefixes.

About this network

AS28657 is operated by MD Brasil - Tecnologia da Informacao Ltda.

What it's used for

• The address space carries corporate infrastructure, evidenced by reverse DNS entries pointing to mdbrasil.com.br (e.g., 138-99-96-128.mdbrasil.com.br).
• The AS announces 1024 IPv4 addresses across 3 prefixes and 2 IPv6 prefixes, with only 2 observed neighbours, indicating a small, self-contained business network rather than a transit provider.

Notable

• All registrants for the announced prefixes match the AS holder, MD Brasil - Tecnologia da Informação Ltda, under the netname 422402.
• The address inventory consists of three contiguous IPv4 blocks within the 138.99.96.0/22 range and two IPv6 /34 prefixes, reflecting a compact internal estate.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 138.99.96.0/22
• 2804:40:4000::/34
• 2804:40:c000::/34

Upstream networks

• AS28370 GUIFAMI Informatica Ltda.
• AS269016 F T L Net Provedor de Internet Ltda- ME

Adjacent networks

• AS28370 GUIFAMI Informatica Ltda.
• AS269016 F T L Net Provedor de Internet Ltda- ME

Routing security

• RPKI: 0 valid, 0 invalid and 4 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 0% of announcements registered; 2 route objects.
• Listed in as-sets: AS-1000-LINKAMERICAN, AS-53427-TGLOBAL, AS-7738-BGP-CUSTOMERS, AS-7738_CUSTOMERS, AS-CTBC-CUSTOMERS8, AS-CTBC-TOOLS-7, AS-DURAND1-CUSTOMER, AS-EMBRATELNET, AS-FORTE-TELECOM-CUSTOMER-TRIAL, AS-HWNG-DOWNSTREAMS, AS-MAXIHOST, AS-OPENX-CUSTOMERS, AS-ROCKETNETWORK-CUSTOMERS, AS-SPACENETWORK, AS-UDOS, AS-UFINET-LATAM-BRASIL, AS262733:AS-ALL, AS262761:AS-CUSTOMERS, AS268976:AS-ALL, AS28198:AS-TRANSIT, AS28370:AS-3AX-CUSTOMERS, AS3491:AS-CUSTOMERS-NA.