Autonomous system
AS28310 AS28310 - ALGAR TELECOM S/A
Residential APNIC
Summary
Algar Telecom
telecom residential mobile isp
AS28310 is operated by Algar Telecom, a major Brazilian telecommunications provider.
What it's used for
- The address space carries residential and mobile subscriber traffic, evidenced by reverse DNS records pointing to
smart.net.brandhost-*.smart.net.br. - The AS announces 7936 IPv4 addresses across 7 prefixes and 1 IPv6 prefix, while maintaining only 1 observed neighbour, indicating a role as an access or eyeball network rather than a transit provider.
Notable
- All RDAP registrants for the announced prefixes are listed as
ALGAR TELECOM S/A, which aligns with the registry holder, although the AS handle in the inventory isSMART TELECOMUNICACOES E SERVICOS LTDA.. - The address inventory consists of seven distinct IPv4 blocks, including a /21, a /22, and smaller /23 and /24 allocations, all registered under the Algar Telecom name.
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 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| IX.br (PTT.br) Recife | Recife, Brazil | 200.219.147.2 |
Transit providers
1 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS16735 | ALGAR TELECOM S/A | 277 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-03, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 7 prefixes · 7.94K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| BR | Brazil | 8 |
Registry
Allocation record
- Registry
- APNIC
- Handle
28310- Registry name
- ASN28310
- Registrant
- ALGAR TELECOM S/A
- Abuse contact
- Computer Security Incident Response Team
- Registered
- 2007-07-10
- Last changed
- 2025-07-28
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 5 with no ROA
- ROAs
- 0 authorising AS28310
- ASPA
- no ASPA record
- IRR
- 100% registered · 5 of 5 announcements
- Route objects
- 16 naming AS28310
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: 448 networks and 1,851 prefixes, as published 2026-11-04. 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