Autonomous system
AS28657 MD Brasil - Tecnologia da Informacao Ltda
Unclassified LACNIC
Summary
MD Brasil
business nsp brazil
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 netname422402. - 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. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-20, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 3 prefixes · 1.02K addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| BR | Brazil | 5 |
Registry
Allocation record
- Registry
- LACNIC
- Handle
28657- Registry name
- ASN28657
- Registrant
- MD Brasil - Tecnologia da Informação Ltda
- Abuse contact
- MD Brasil Tecnologia Informação SC LTDA
- Registered
- 2006-07-13
- Last changed
- 2013-03-06
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 4 with no ROA
- ROAs
- 0 authorising AS28657
- ASPA
- no ASPA record
- IRR
- 50% registered · 2 of 4 announcements
- Route objects
- 2 naming AS28657
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,778 prefixes, as published 2026-10-20. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere