Autonomous system
AS52419 CESOP
Residential LACNIC
Summary
CESOP
isp residential argentina cable
CESOP is the AS handle for Cooperativa Electrica Servicios y Obras Publicas de San Bernardo Ltda.
What it's used for
- The address space carries a mix of Cogent Communications, LLC netnames (
COGENT-A,COGENT-FNSI-0005,COGENT-205-164-64) and CESOP netnames (181.192.64.0 - 181.192.79.255,200.31.240.0 - 200.31.255.255). - The AS announces 20,480 IPv4 addresses and 6 IPv6 prefixes, with 13 prefixes located in Argentina, against 4 observed neighbours, indicating an access network role.
- As a cable/DSL ISP in South America, the traffic consists of subscriber eyeballs and residential broadband access.
Notable
- Registrants differ from the announcer for five of the seven largest prefixes, which are registered to Cogent Communications, LLC, while the remaining two are registered to CESOP.
- The address inventory includes both Cogent-owned space and CESOP-owned space, suggesting a relationship or lease arrangement with Cogent.
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 2026-10-14, 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 · 20.48K addresses IPv6 6 prefixes
| Country | Name | Prefixes |
|---|---|---|
| AR | Argentina | 13 |
Registry
Allocation record
- Registry
- LACNIC
- Handle
AS52419- Registry name
- 52419
- Registrant
- CESOP
- Abuse contact
- timoneoy@gmail.com
- Registered
- 2012-11-05
- Last changed
- 2017-02-14
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 46 valid, 0 with no ROA
- ROAs
- 10 authorising AS52419
- ASPA
- no ASPA record
- IRR
- 100% registered · 46 of 46 announcements
- Route objects
- 51 naming AS52419
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 1,773 prefixes, as published 2026-10-13. 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