Autonomous system
AS28166 Telecom South America Ltda
Residential ARIN Cable/DSL/ISP
Summary
Telecom South America
isp residential brazil cable
AS28166 is operated by Telecom South America Ltda.
What it's used for
- The address space carries residential and business connectivity, evidenced by reverse DNS entries such as
BB3F87FF.bbw-dist1-spo2.tesa.net.brandBB3F8BFE.static.wtctelecom.com.br. - The AS announces 40,960 IPv4 addresses across 37 prefixes and 1 IPv6 prefix, with 29 observed neighbours, a ratio consistent with a regional access provider.
Notable
- All sampled registrants match the announcer, identified as Telecom South America Ltda.
- The inventory is dominated by the 177.46.0.0/16 range, with smaller blocks in 187.63.0.0/16 and 200.236.0.0/16.
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 | 187.16.218.104 |
| IX.br (PTT.br) Porto Alegre | Porto Alegre, Brazil | 177.52.38.53 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 40 prefixes · 40.96K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| BR | Brazil | 41 |
Registry
Allocation record
- Registry
- ARIN
- Handle
28166- Registry name
- ASN28166
- Registrant
- Telecom South America Ltda
- Abuse contact
- Sing-Voip Telecomunicações
- Registered
- 2009-06-23
- Last changed
- 2013-03-06
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- Telecom South America
- Also known as
- Tesa Telecom - Telecom South America
- Network type
- Cable/DSL/ISP
- Scope
- Regional
- Traffic ratio
- Mostly Inbound
- Peering policy
- Open
- IRR as-set
AS-TESATELECOM- Present at
- 2 exchanges
- Facilities
- 20 facilities
- Website
- http://www.tesatelecom.com
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, 67 with no ROA
- ROAs
- 0 authorising AS28166
- ASPA
- no ASPA record
- IRR
- 100% registered · 67 of 67 announcements
- Route objects
- 38 naming AS28166
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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: 432 networks and 1,768 prefixes, as published 2026-10-12. 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