Autonomous system
AS27818 Cotesma
Residential LACNIC
Summary
Cotesma
isp residential cooperative argentina
AS27818 is operated by Cotesma, a telecommunications cooperative in San Martín de los Andes.
What it's used for
- The address space carries residential and business access traffic, evidenced by reverse DNS entries like
host-cotesma-114-151-254.smandes.com.ar. - The network announces 17,664 IPv4 addresses across 4 prefixes and 9 IPv6 prefixes, with only 4 observed neighbours, indicating a local access provider rather than a transit hub.
Notable
- Registrants for the available prefixes (
181.114.128.0/19,131.161.152.0/22,200.47.43.0/24) all list Cotesma, matching the AS holder. - The address inventory consists of four distinct IPv4 blocks, including a /19 and a /24, alongside a substantial IPv6 allocation under the
2803:3380::/32range.
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 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| CABASE IXP Neuquén | Neuquén, Argentina | 200.0.19.7 |
Transit providers
4 upstream, 0 downstream and 7 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-10, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 4 prefixes · 17.66K addresses IPv6 9 prefixes
| Country | Name | Prefixes |
|---|---|---|
| AR | Argentina | 13 |
Registry
Allocation record
- Registry
- LACNIC
- Registered
- 2006-03-31
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 89 valid, 0 with no ROA
- ROAs
- 24 authorising AS27818
- ASPA
- no ASPA record
- IRR
- 100% registered · 89 of 89 announcements
- Route objects
- 26 naming AS27818
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: 431 networks and 1,775 prefixes, as published 2026-10-11. 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