asn.dev

Autonomous system

AS28576 ITIBR - Instituto de Tecnologia Informacao Brasil

Unclassified LACNIC

IPv4 addresses 8.96K 15 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly BR
Exchanges 1 recorded by PCH
Upstreams 5 0 downstream
Flagged prefixes 0 none

Summary

ITIBR

Brazil · AI-generated

transit business brazil

ITIBR is operated by Instituto de Tecnologia Informacao Brasil.

What it's used for

  • The address space carries connectivity and IT solutions, evidenced by registrants CTINET SOLUCOES EM CONECTIVIDADE E INFORMATICA LTD and ITIBR - Instituto de Tecnologia Informacao Brasil.
  • Reverse DNS entries such as d-ip157-254.ctitel.com.br and 187-73-129-126.dedicated.ctitel.com.br indicate dedicated IP services.
  • With 8960 IPv4 addresses announced across 15 prefixes and 24 observed neighbours, the ratio suggests a transit or network service provider role rather than a large access network.

Notable

  • Registrants include both ITIBR - Instituto de Tecnologia Informacao Brasil and CTINET SOLUCOES EM CONECTIVIDADE E INFORMATICA LTD, indicating a mix of owned and potentially leased or affiliated address space.
  • The inventory consists of 15 IPv4 prefixes and 1 IPv6 prefix, all announced from Brazil.
  • The AS has been observed in routing tables since 2004-05-26.

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

Recorded at 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
IX.br (PTT.br) São PauloSão Paulo, Brazil187.16.218.73

Transit providers

5 upstream, 0 downstream and 8 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS262731SOLUCOES EM CONECTIVIDADE E INFORMATICA LTD354
AS22356do Brasil Ltda346
AS6939Hurricane Electric LLC81
AS8055CONECTIVIDADE LTDA.14
AS24482SG.GS8

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-26, 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 15 prefixes · 8.96K addresses IPv6 1 prefixes

CountryNamePrefixes
BRBrazil16

Registry

Allocation record

LACNIC · via Atlas (registry + RDAP)
Registry
LACNIC
Handle
28576
Registry name
ASN28576
Registrant
ITIBR - Instituto de Tecnologia Informacao Brasil
Abuse contact
Grupo de Segurança Durand
Registered
2004-04-06
Last changed
2022-12-01
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
86% valid · 12 valid, 2 with no ROA
ROAs
12 authorising AS28576
ASPA
no ASPA record
IRR
100% registered · 14 of 14 announcements
Route objects
42 naming AS28576

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: 446 networks and 1,852 prefixes, as published 2026-10-27. 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