Autonomous system
AS61817 Halley Telecom Comercio & Servico Ltda
Unclassified LACNIC
Summary
Halley Telecom
isp residential brazil cable
AS61817 is operated by Halley Telecom Comercio & Servico Ltda.
What it's used for
- The address space carries residential and business access traffic, evidenced by reverse DNS entries pointing to
halleytelecom.com.brand netnames likeHALLEY-TELECOM-CGNT-NET-1. - The AS announces 5376 IPv4 addresses across 3 prefixes and 1 IPv6 prefix, while maintaining 31 observed neighbours. This ratio of moderate address space to a significant number of peering partners indicates a regional access provider with substantial transit and peering requirements.
- Traffic from this AS consists of subscriber eyeballs and local business connectivity, as Halley Telecom operates as a wired telecommunications carrier and cable/DSL ISP in the Brazilian state of Pará.
Notable
- Registrants for the two largest prefixes,
38.56.0.0/20and201.150.148.0/22, align with the AS holder, Halley Telecom. The smaller prefix38.172.140.0/24is registered to Cogent Communications, LLC, indicating a block of leased or transit space. - The inventory includes a large /20 block and a /22 block, both registered to Halley, alongside a single /24 from Cogent, reflecting a mix of owned and acquired address space.
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 3 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| IX.br (PTT.br) São Paulo | São Paulo, Brazil | 187.16.218.54 |
| IX.br (PTT.br) Fortaleza | Fortaleza, Brazil | 45.68.72.18 |
| IX.br (PTT.br) Belém | Belém, Brazil | 187.16.195.16 |
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 2 prefixes · 5.12K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| BR | Brazil | 3 |
Registry
Allocation record
- Registry
- LACNIC
- Registered
- 2014-06-27
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 12 with no ROA
- ROAs
- 1 authorising AS61817
- ASPA
- no ASPA record
- IRR
- 92% registered · 11 of 12 announcements
- Route objects
- 60 naming AS61817
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: 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