Autonomous system
AS61751 SINTNET-TELECOMUNICACOES E INFORMATICA LTDA
Unclassified APNIC NSP
Summary
Sintercom
isp regional brazil telecom
SINTNET-TELECOMUNICACOES E INFORMATICA LTDA is the AS handle for Sintercom, a regional telecommunications provider based in Nova Iguaçu, Rio de Janeiro.
What it's used for
- The address space carries subscriber traffic, indicated by reverse DNS entries pointing to
sintercom.com.br(e.g.,131-72-253-0.sintercom.com.br). - The AS announces 2048 IPv4 addresses across 2 prefixes and 1 IPv6 prefix, while maintaining 31 observed neighbours; this ratio of modest address inventory against a high neighbour count suggests a role focused on transit or interconnection rather than large-scale eyeball aggregation.
- As a regional ISP, the traffic consists of local subscriber internet access and data services for the Nova Iguaçu area.
Notable
- Registrants for both announced IPv4 prefixes (
131.72.252.0/22and168.228.40.0/22) match the AS holder, SINTNET-TELECOMUNICACOES E INFORMATICA LTDA. - The company was founded in 2012 and operates under the trade name Sintercom.
- The inventory consists of two /22 blocks and a single /32 IPv6 prefix, representing a compact, self-contained address 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
Recorded at 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| IX.br (PTT.br) São Paulo | São Paulo, Brazil | 187.16.212.41 |
| IX.br (PTT.br) Vitória | Vitória, Brazil | 187.16.194.87 |
Transit providers
7 upstream, 2 downstream and 17 adjacent networks observed; most-used upstreams first.
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
IPv4 2 prefixes · 2.05K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| BR | Brazil | 3 |
Registry
Allocation record
- Registry
- APNIC
- Handle
61751- Registry name
- ASN61751
- Registrant
- SINTNET-TELECOMUNICACOES E INFORMATICA LTDA
- Abuse contact
- alexandre@sintercom.com.br
- Registered
- 2014-08-12
- Last changed
- 2016-03-16
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- SINTNET-TELECOMUNICACOES E INFORMATICA LTDA
- Also known as
- Sintercom
- Network type
- NSP
- Scope
- Regional
- Traffic ratio
- Balanced
- Peering policy
- Open
- IRR as-set
AS61751:AS-SINTNET-TELECOM- Present at
- 2 exchanges
- Facilities
- 4 facilities
- Website
- http://www.sintercom.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
- RPKI
- 0% valid · 0 valid, 21 with no ROA
- ROAs
- 0 authorising AS61751
- ASPA
- no ASPA record
- IRR
- 100% registered · 21 of 21 announcements
- Route objects
- 7 naming AS61751
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