Autonomous system
AS10617 SION S.A
Residential LACNIC Cable/DSL/ISP
Summary
SION S.A.
isp legacy
SION S.A. is an Argentine Internet provider, in the market since 1995 and headquartered in Buenos Aires, selling access to homes and businesses across a very wide spread of towns in the country's interior. It absorbed the early Argentine ISP UOL Sinectis in 2010, which is why two brands share this one AS.
What it's used for
This is an eyeball network, and the reverse DNS says so plainly. RIS observes 216 IPv4 prefixes carrying 54,272 addresses and two IPv6 prefixes, 2803:9780::/32 and 2803:6380::/32, against 6 observed BGP neighbours.
The sampled PTRs are subscriber-pool naming across several access technologies: cablemodem-200-59-108-5.madryn.sinectis.com.ar and cmts1.alvear.mendoza.sinectis.com.ar (cable/HFC, with the CMTS itself visible), ont-200-59-78-5.trelew.sinectis.com.ar (fibre to the home), dial37-5.sion.net (the dial-up era, still named), and generic host-200-81-184-5.sion.net pools. Every one carries a locality label — Puerto Madryn, Trelew, Alvear in Mendoza — which is how a provider with hundreds of small-town footprints organises its space.
Notable
216 prefixes for 54,000 addresses is the giveaway: an average block size well under a /24-and-a-half. That fragmentation is not untidiness, it is the shape of a provider that grew by lighting up one locality at a time, often over cable plant owned by regional operators it partnered with, rather than by getting one large allocation and subdividing it centrally.
Interesting
sion.com, sion.net and sinectis.com.ar all appear inside the same routed space — a merged ISP rarely renumbers, and the acquired brand's reverse zone can outlive its logo by well over a decade.
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 2026-10-16, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 30 prefixes · 74.24K addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| AR | Argentina | 32 |
Registry
Allocation record
- Registry
- LACNIC
- Handle
AS10617- Registry name
- 10617
- Registrant
- SION S.A
- Abuse contact
- redes@sion.com
- Registered
- 1997-10-06
- Last changed
- 1997-10-06
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- Sion S.A.
- Also known as
- Sion
- Network type
- Cable/DSL/ISP
- Scope
- South America
- Traffic ratio
- Balanced
- Peering policy
- Open
- IRR as-set
AS10617- Present at
- 1 exchanges
- Facilities
- 1 facilities
- Website
- http://www.sion.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
- 99.7% valid · 297 valid, 1 with no ROA
- ROAs
- 20 authorising AS10617
- ASPA
- no ASPA record
- IRR
- 99.7% registered · 297 of 298 announcements 1 other origin
- Route objects
- 21 naming AS10617
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: 442 networks and 1,783 prefixes, as published 2026-10-17. 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