Autonomous system
AS28163 Cosmonline Informatica Ltda
Unclassified ARIN Cable/DSL/ISP
Summary
Cosmonet Telecom
isp residential cable dsl
AS28163 is operated by Cosmonline Informática Ltda, also known as Cosmonet Telecom.
What it's used for
- The address space carries residential and small business connectivity, consistent with the operator's classification as a Cable/DSL/ISP.
- The network announces a single IPv4 prefix, 187.63.32.0/20, comprising 4096 addresses, with no IPv6 prefixes in inventory.
- With only one observed neighbour, the low neighbour count relative to the address block suggests an access or eyeball network rather than a transit provider.
Notable
- The RDAP registrant for the announced prefix is Cosmonline Informática Ltda, which matches the AS holder name.
- The operator is identified in secondary sources as Cosmonet Telecom, indicating a brand name distinct from the legal entity name.
- The address inventory consists of a single contiguous /20 block, indicating a simple and focused allocation strategy.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS16735 | ALGAR TELECOM S/A | 1,769 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-30, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 4.10K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| BR | Brazil | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
28163- Registry name
- ASN28163
- Registrant
- Cosmonline Informática Ltda
- Abuse contact
- Jozué Balarin
- Registered
- 2009-06-10
- Last changed
- 2013-03-06
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- COSMONLINE INFORMATICA LTDA
- Also known as
- COSMONET TELECOM
- Network type
- Cable/DSL/ISP
- Scope
- South America
- Traffic ratio
- Mostly Inbound
- Peering policy
- Open
- Website
- http://www.cosmonet.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, 29 with no ROA
- ROAs
- 0 authorising AS28163
- ASPA
- no ASPA record
- IRR
- 100% registered · 29 of 29 announcements
- Route objects
- 2 naming AS28163
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: 448 networks and 1,849 prefixes, as published 2026-10-30. 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