asn.dev

Autonomous system

AS53121 Infornet Consultoria e Assessoria Ltda

Unclassified LACNIC

IPv4 addresses 5.12K 2 prefixes
IPv6 prefixes 5 counted as prefixes, not addresses
Countries 1 mostly BR
Exchanges 4 recorded by PCH
Upstreams 8 8 downstream
Flagged prefixes 0 none

Summary

Infornet

Brazil · AI-generated

isp residential cable brazil

AS53121 is operated by Infornet Consultoria e Assessoria Ltda.

What it's used for

  • The address space carries residential subscriber traffic, evidenced by reverse DNS entries such as dynamic-170-81-181-0.sejainfornet.com.br and dynamic-170-81-182-254.sejainfornet.com.br.
  • The AS announces 5,120 IPv4 addresses across 2 prefixes and 5 IPv6 prefixes, while maintaining 36 observed neighbours; this ratio indicates an access network providing last-mile connectivity rather than transit.
  • Traffic from this AS consists of end-user internet access for residential customers in Brazil, consistent with the operator's classification as a regional Cable/DSL/ISP.

Notable

  • Registrants for both announced IPv4 prefixes (187.111.128.0/20 and 170.81.180.0/22) match the AS holder, Infornet Consultoria e Assessoria Ltda.
  • The address inventory is composed of two distinct IPv4 blocks and a set of IPv6 prefixes under the 2804:3784::/33 range, reflecting a standard regional ISP allocation.

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 4 exchanges in 1 country, largest first.

ExchangeLocationTheir address
IX.br (PTT.br) São PauloSão Paulo, Brazil187.16.213.106
IX.br (PTT.br) FortalezaFortaleza, Brazil45.68.74.125
IX.br (PTT.br) SalvadorSalvador, Brazil200.219.145.127
IX.br (PTT.br) Feira de SantanaFeira De Santana, Brazil200.219.131.7

Transit providers

8 upstream, 8 downstream and 24 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS6939Hurricane Electric LLC344
AS61568ALOO TELECOM - FSF TECNOLOGIA SA104
AS7738V tal58
AS24482SG.GS30
AS35280F5 Networks SARL26
AS37721Virtual Technologies & Solutions26
AS52873Softdados Telecomunicacoes22
AS269396UNIR TELECOM2

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, 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 2 prefixes · 5.12K addresses IPv6 5 prefixes

CountryNamePrefixes
BRBrazil7

Registry

Allocation record

LACNIC · via Atlas (registry data)
Registry
LACNIC
Registered
2010-01-22
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 30 with no ROA
ROAs
0 authorising AS53121
ASPA
no ASPA record
IRR
100% registered · 30 of 30 announcements
Route objects
535 naming AS53121

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 1,781 prefixes, as published 2026-10-16. 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