Autonomous system
AS28538 Cablemas Telecomunicaciones SA de CV
Unclassified ARIN
Summary
Cablemas Telecomunicaciones
cable residential mexico access
The AS handle AS28538 is held by Cablemas Telecomunicaciones SA de CV.
What it's used for
- The address space is registered under the netnames
177.236.128.0 - 177.236.159.255,177.236.160.0 - 177.236.175.255, and177.236.0.0 - 177.239.255.255, all attributed to Cablemas Telecomunicaciones SA de CV. - The AS announces 2048 IPv4 addresses across 5 prefixes and maintains a single observed neighbour, a ratio that indicates an access or eyeball network rather than a transit provider.
Notable
- All five announced prefixes list Cablemas Telecomunicaciones SA de CV as the registrant, which agrees with the AS holder.
- The inventory consists of five IPv4 prefixes with no IPv6 prefixes announced, and the address space is concentrated in the 177.236.0.0/16 and 189.215.0.0/16 ranges.
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.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS18734 | Operbes, S.A. de C.V. | 415 |
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 5 prefixes · 2.05K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| MX | Mexico | 5 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS28538- Registry name
- 28538
- Registrant
- Cablemas Telecomunicaciones SA de CV
- Abuse contact
- ipmastercm@izzi.mx
- Registered
- 2007-07-27
- Last changed
- 2021-09-14
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 29% valid · 2 valid, 5 with no ROA
- ROAs
- 2 authorising AS28538
- ASPA
- no ASPA record
- IRR
- 29% registered · 2 of 7 announcements
- Route objects
- 16 naming AS28538
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 1,783 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