Autonomous system
AS11271 SENCINET LATAM BRASIL LTDA
Unclassified LACNIC
Summary
Sencinet LATAM Brasil Ltda
enterprise transit legacy
AS11271 belongs to Sencinet LATAM Brasil Ltda, the Brazilian arm of Sencinet — the managed-connectivity operator formed when the CIH Group bought BT's domestic Latin American business in October 2020. Headquartered in São Paulo, it sells corporate WAN, data-centre and managed network services to enterprises across the region.
What it's used for
RIS observes 7 IPv4 prefixes carrying 32,768 addresses, one IPv6 prefix (2800:23::/32), and three observed neighbours. Read the neighbour count against the address count and the answer is not ambiguous: 32,768 addresses is a substantial estate, but three BGP adjacencies is an enterprise-scale edge, not a wholesale carrier's. A transit provider selling connectivity accumulates neighbours in the dozens or hundreds. This network has three.
That fits what Sencinet actually is. Its business is managed corporate networking — private WAN links, MPLS, cloud on-ramps, hosted services for large customers — delivered over infrastructure it operates rather than over a public transit market. Customer traffic largely rides private circuits. The public address estate carries the company's own edge and the internet-facing pieces of the services it runs for enterprise clients. The single PTR the pack sampled, a-bl.sencinet.com.br on 200.219.160.5, is first-party infrastructure under the operator's own domain, which is what that looks like.
Notable
Every prefix RDAP resolved — the 200.218.128.0/18, 201.62.0.0/19 and 200.219.160.0/19 aggregates and the /24s carved from them — is registered to Sencinet LATAM Brasil Ltda itself in LACNIC. Self-registered space announced by its own registrant, with first-party reverse DNS on it, is a clean operator signal and rules out the IP-leasing shape.
Interesting
The registry handles are numeric (4458, 805, 70095) rather than named — LACNIC's convention, and a reminder that the RDAP name field carries whatever the registry chose to put there. The address estate itself long predates the Sencinet brand: this is the network BT ran in Brazil until 2020, relabelled rather than rebuilt.
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.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 10 prefixes · 32.77K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| BR | Brazil | 11 |
Registry
Allocation record
- Registry
- LACNIC
- Registered
- 1999-11-18
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 8 with no ROA
- ROAs
- 0 authorising AS11271
- ASPA
- no ASPA record
- IRR
- 100% registered · 8 of 8 announcements
- Route objects
- 50 naming AS11271
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 1,782 prefixes, as published 2026-10-16. 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