asn.dev

Autonomous system

AS40356 -Reserved AS-

Unclassified ARIN

IPv4 addresses 256 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly Unknown
Exchanges 1 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

IB Telecomunicações

unknown · AI-generated

telecom brazil small

The AS handle is -Reserved AS- and the holder is IB Telecomunicações LTDA.

What it's used for

  • The space carries a single IPv4 prefix, 189.126.137.0/24, with netname 444880 and registrant IB TELECOMUNICAÇÕES LTDA.
  • The AS announces 256 IPv4 addresses and 0 IPv6 prefixes, with 1 observed neighbour in RIS.
  • The low neighbour count relative to the address space suggests a small access or local network role.

Notable

  • The registrant IB TELECOMUNICAÇÕES LTDA matches the operator identity.
  • The address inventory consists of a single /24 block, indicating a small, focused 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 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
IX.br (PTT.br) SalvadorSalvador, Brazil200.219.145.139

Transit providers

1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS52871TASCOM TELECOMUNICACOES LTDA59

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, 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 1 prefixes · 256 addresses IPv6 0 prefixes

CountryNamePrefixes
Unknown1

Registry

Allocation record

ARIN · via Atlas (registry data)
Registry
ARIN
Allocation
reserved

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 1 with no ROA
ROAs
0 authorising AS40356
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
2 naming AS40356

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 1,771 prefixes, as published 2026-10-15. 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