Autonomous system
AS28545 Cablemas Telecomunicaciones SA de CV
Unclassified LACNIC Cable/DSL/ISP
Summary
Izzi
cable residential isp mexico
AS28545 is operated by Izzi, a Mexican cable system operator formerly known as Cablemas Telecomunicaciones SA de CV.
What it's used for
- The address space carries residential and business broadband services, evidenced by the registrant netnames such as
187.184.0.0 - 187.184.255.255and177.236.0.0 - 177.236.127.255associated with the cable operator. - The AS announces 29440 IPv4 addresses across 27 prefixes and 20 IPv6 prefixes, while maintaining only 10 observed neighbours, a ratio indicative of an access or eyeball network rather than a transit provider.
Notable
- All RDAP registrants for the largest prefixes align with the announcer, consistently listing
Cablemas Telecomunicaciones SA de CV. - The operator is widely known as Izzi, reflecting a rebrand from its original name Cablemas Telecomunicaciones SA de CV.
- The inventory is dominated by large blocks in the 187.184.0.0/16 range, with smaller allocations in 177.236.0.0/16, 189.214.0.0/16, and 187.252.0.0/16.
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 2026-10-30, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 26 prefixes · 29.18K addresses IPv6 20 prefixes
| Country | Name | Prefixes |
|---|---|---|
| MX | Mexico | 46 |
Registry
Allocation record
- Registry
- LACNIC
- Handle
AS28545- Registry name
- 28545
- Registrant
- Cablemas Telecomunicaciones SA de CV
- Abuse contact
- ipmastercm@izzi.mx
- Registered
- 2008-03-04
- Last changed
- 2021-09-14
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- izzi telecom
- Also known as
- Cablemas
- Network type
- Cable/DSL/ISP
- Scope
- North America
- Traffic ratio
- Mostly Inbound
- Peering policy
- Selective
- Facilities
- 2 facilities
- Website
- http://www.izzi.mx
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
- 71% valid · 41 valid, 17 with no ROA
- ROAs
- 17 authorising AS28545
- ASPA
- no ASPA record
- IRR
- 100% registered · 58 of 58 announcements
- Route objects
- 94 naming AS28545
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: 448 networks and 1,849 prefixes, as published 2026-10-30. 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