asn.dev

Autonomous system

AS28257 CONCEITOS NET SERVICOS DE COMUNICACAO E MULTIMIDIA

Unclassified APNIC Cable/DSL/ISP

IPv4 addresses 7.17K 5 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly BR
Exchanges 0 recorded by PCH
Upstreams 3 2 downstream
Flagged prefixes 0 none

Summary

Conceitos Internet

Brazil · AI-generated

isp residential regional brazil

AS28257 is operated by Conceitos Internet, a regional ISP in Brazil.

What it's used for

  • The address space carries residential and business access traffic, evidenced by reverse DNS entries like din-84-225-186-0.conceitosinformatica.com.br and din-177-129-46-254.conceitosinformatica.com.br.
  • The AS announces 7168 IPv4 addresses across 5 prefixes and 1 IPv6 prefix, with 5 observed neighbours, indicating a role as an access provider rather than a transit hub.

Notable

  • All registrants for the announced prefixes are listed as CONCEITOS NET SERVICOS DE COMUNICACAO E MULTIMIDIA, matching the AS holder.
  • The address inventory consists of five IPv4 blocks, including a /20 and four smaller /22 and /23 blocks, all registered to the same entity.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

3 upstream, 2 downstream and 6 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS61740unnamed181
AS264564Telecab Telecomunicacoes Ltda84
AS12956TELEFONICA GLOBAL SOLUTIONS SL4

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

Shape and geography

IPv4 5 prefixes · 7.17K addresses IPv6 1 prefixes

CountryNamePrefixes
BRBrazil6

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
28257
Registry name
ASN28257
Registrant
CONCEITOS NET SERVICOS DE COMUNICACAO E MULTIMIDIA
Abuse contact
Edsongley Almeida
Registered
2013-05-02
Last changed
2022-03-14
Allocation
allocated

Declared

PeeringDB profile

self-reported
Name
Conceitos Internet
Also known as
Conceitos
Network type
Cable/DSL/ISP
Scope
Regional
Traffic ratio
Mostly Inbound
Peering policy
Open
Website
http://www.conceitosinformatica.com.br

PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 5 with no ROA
ROAs
0 authorising AS28257
ASPA
no ASPA record
IRR
100% registered · 5 of 5 announcements
Route objects
4 naming AS28257

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 1,779 prefixes, as published 2026-10-21. 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

Cross-check